7Baggers

Kirby Corporation
(NYSE:KEX) 

KEX stock logo

Kirby Corporation operates domestic tank barges in the United States. Its Marine Transportation segment provides marine transportation services and towing vessels transporting bulk liquid products, as well as operates tank barges throughout the Mississippi River System, on the Gulf Intracoastal Wate...

Founded: 1969
Full Time Employees: 5,550
Sector: Industrials
Industry: Marine Shipping

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    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2003-12-31 
                                                                                        
      revenues:
                                                                                        
      marine transportation
    497,183,000 481,653,000 484,941,000 492,562,000 476,149,000 466,776,000 486,054,000 484,808,000 475,412,000 452,595,000 429,885,000 426,962,000 412,495,000 422,736,000 433,040,000 405,655,000 355,536,000 350,566,000 338,514,000 332,887,000 300,951,000 299,419,000 320,602,000 380,987,000 403,257,000 402,010,000 412,665,000 404,286,000 368,121,000 1,482,760,960 382,040 378,163,000 340,403,000 1,408,574,190 318,810 331,265,000 343,652,000 356,216,000 359,031,000 378,303,000 378,343,000 418,343,000 425,053,000 419,905,000 448,744,000 456,745,000 435,771,000 436,181,000 423,868,000 418,518,000 380,970,000 349,771,000 342,195,000 335,957,000 335,112,000 351,206,000 266,612,000 241,677,000 232,443,000 232,785,000 230,256,000 219,562,000 216,904,000 227,467,000 217,906,000 219,021,000 265,461,000 286,880,000 281,906,000 261,228,000 248,695,000 241,329,000 229,745,000 209,065,000 202,665,000 211,080,000 204,088,000 189,383,000 125,052,750 172,259,000 170,742,000 157,210,000   
      distribution and services
    346,916,000 370,122,000 386,220,000 362,893,000 309,510,000 335,539,000 345,095,000 339,582,000 332,610,000 346,581,000 334,887,000 350,286,000 337,949,000 307,429,000 312,803,000 292,309,000 255,246,000 240,700,000 260,406,000 226,737,000 195,899,000 190,337,000 175,965,000 160,172,000 240,669,000 253,917,000 254,144,000 366,756,000 376,500,000 1,487,231,195 322,805 424,508,000 401,285,000 55,616 222,464                                                  
      total revenues
    844,099,000 851,775,000 871,161,000 855,455,000 785,659,000 802,315,000 831,149,000 824,390,000 808,022,000 799,176,000 764,772,000 777,248,000 750,444,000 730,165,000 745,843,000 697,964,000 610,782,000 591,266,000 598,920,000 559,624,000 496,850,000 489,756,000 496,567,000 541,159,000 643,926,000 655,927,000 666,809,000 771,042,000 744,621,000 2,969,992,155 704,845 802,671,000 741,688,000 2,112,116,726 541,274 473,328,000 491,705,000 435,650,000 434,708,000 441,582,000 458,733,000 532,565,000 543,156,000 587,673,000 680,721,000 628,054,000 589,246,000 551,105,000 563,908,000 558,785,000 512,551,000 521,324,000 511,848,000 566,935,000 550,145,000 563,582,000 437,331,000 299,359,000 286,318,000 281,317,000 273,669,000 268,253,000 259,588,000 272,166,000 272,743,000 277,661,000 326,677,000 354,647,000 348,260,000                
      yoy
    7.44% 6.16% 4.81% 3.77% -2.77% 0.39% 8.68% 6.07% 7.67% 9.45% 2.54% 11.36% 22.87% 23.49% 24.53% 24.72% 22.93% 20.73% 20.61% 3.41% -22.84% -25.33% -25.53% -29.81% -13.52% -77.91% 94503.64% -3.94% 0.40% 40.62% 30.22% 69.58% 50.84% 384.82% -99.88% 7.19% 7.19% -18.20% -19.97% -24.86% -32.61% -15.20% -7.82% 6.64% 20.71% 12.40% 14.96% 5.71% 10.17% -1.44% -6.83% -7.50% 17.04% 89.38% 92.14% 100.34% 59.80% 11.60% 10.30% 3.36% 0.34% -3.39% -20.54% -23.26% -21.68%                    
      qoq
    -0.90% -2.23% 1.84% 8.88% -2.08% -3.47% 0.82% 2.03% 1.11% 4.50% -1.61% 3.57% 2.78% -2.10% 6.86% 14.27% 3.30% -1.28% 7.02% 12.63% 1.45% -1.37% -8.24% -15.96% -1.83% -1.63% -13.52% 3.55% -74.93% 421268.12% -99.91% 8.22% -64.88% 390112.12% -99.89% -3.74% 12.87% 0.22% -1.56% -3.74% -13.86% -1.95% -7.58% -13.67% 8.39% 6.59% 6.92% -2.27% 0.92% 9.02% -1.68% 1.85% -9.72% 3.05% -2.38% 28.87% 46.09% 4.55% 1.78% 2.79% 2.02% 3.34% -4.62% -0.21% -1.77% -15.00% -7.89% 1.83%                 
      costs and expenses:
                                                                                        
      costs of sales and operating expenses
    558,529,000 560,436,000 580,491,000 563,238,000 512,336,000 543,350,000 552,091,000 554,232,000 550,681,000 561,732,000 530,541,000 546,069,000 542,080,000 534,069,000 552,392,000 523,862,000 450,618,000 433,923,000 446,519,000 409,479,000 363,040,000 342,947,000 340,764,000 373,539,000 453,568,000 471,382,000 458,514,000 563,495,000 536,655,000 2,160,447,579 498,421 588,628,000 553,317,000 1,409,283,660 378,340 324,540,000 345,296,000 278,977,000 282,168,000 276,897,000 288,910,000 333,115,000 343,745,000 384,781,000 457,177,000 403,460,000 383,229,000 344,396,000 369,587,000 369,274,000 334,397,000 344,990,000 345,916,000 384,359,000 369,512,000 378,520,000 294,909,000 185,499,000 177,328,000 172,029,000 168,927,000 164,952,000 150,843,000 157,186,000 160,710,000 169,094,000 193,830,000 220,875,000 220,259,000 208,346,000 192,882,000 186,338,000 180,608,000 175,599,000 159,954,000 169,407,000 157,595,000 144,378,000 136,796,000 130,265,000 128,267,000 119,927,000   
      gross profit
    285,570,000 291,339,000 290,670,000 292,217,000 273,323,000 258,965,000 279,058,000 270,158,000 257,341,000 237,444,000 234,231,000 231,179,000 208,364,000 196,096,000 193,451,000 174,102,000 160,164,000 157,343,000 152,401,000 150,145,000 133,810,000 146,809,000 155,803,000 167,620,000 190,358,000 184,545,000 208,295,000 207,547,000 207,966,000 809,544,576 206,424 214,043,000 188,371,000 702,833,066 162,934 148,788,000 146,409,000 156,673,000 152,540,000 164,685,000 169,823,000 199,450,000 199,411,000 202,892,000 223,544,000 224,594,000 206,017,000 206,709,000 194,321,000 189,511,000 178,154,000 176,334,000 165,932,000 182,576,000 180,633,000 185,062,000 142,422,000 113,860,000 108,990,000 109,288,000 104,742,000 103,301,000 108,745,000 114,980,000 112,033,000 108,567,000 132,847,000 133,772,000 128,001,000                
      yoy
    4.48% 12.50% 4.16% 8.17% 6.21% 9.06% 19.14% 16.86% 23.51% 21.09% 21.08% 32.78% 30.09% 24.63% 26.94% 15.96% 19.70% 7.18% -2.18% -10.43% -29.71% -20.45% -25.20% -19.24% -8.47% -77.20% 100806.39% -3.03% 10.40% 15.18% 26.69% 43.86% 28.66% 348.60% -99.89% -9.65% -13.79% -21.45% -23.50% -18.83% -24.03% -11.20% -3.21% -1.85% 15.04% 18.51% 15.64% 17.23% 17.11% 3.80% -1.37% -4.72% 16.51% 60.35% 65.73% 69.33% 35.97% 10.22% 0.23% -4.95% -6.51% -4.85% -18.14% -14.05% -12.47%                    
      qoq
    -1.98% 0.23% -0.53% 6.91% 5.54% -7.20% 3.29% 4.98% 8.38% 1.37% 1.32% 10.95% 6.26% 1.37% 11.11% 8.70% 1.79% 3.24% 1.50% 12.21% -8.85% -5.77% -7.05% -11.94% 3.15% -11.40% 0.36% -0.20% -74.31% 392075.61% -99.90% 13.63% -73.20% 431260.59% -99.89% 1.62% -6.55% 2.71% -7.37% -3.03% -14.85% 0.02% -1.72% -9.24% -0.47% 9.02% -0.33% 6.38% 2.54% 6.37% 1.03% 6.27% -9.12% 1.08% -2.39% 29.94% 25.09% 4.47% -0.27% 4.34% 1.39% -5.01% -5.42% 2.63% 3.19% -18.28% -0.69% 4.51%                 
      gross margin %
    33.83% 34.20% 33.37% 34.16% 34.79% 32.28% 33.57% 32.77% 31.85% 29.71% 30.63% 29.74% 27.77% 26.86% 25.94% 24.94% 26.22% 26.61% 25.45% 26.83% 26.93% 29.98% 31.38% 30.97% 29.56% 28.13% 31.24% 26.92% 27.93% 27.26% 29.29% 26.67% 25.40% 33.28% 30.10% 31.43% 29.78% 35.96% 35.09% 37.29% 37.02% 37.45% 36.71% 34.52% 32.84% 35.76% 34.96% 37.51% 34.46% 33.91% 34.76% 33.82% 32.42% 32.20% 32.83% 32.84% 32.57% 38.03% 38.07% 38.85% 38.27% 38.51% 41.89% 42.25% 41.08% 39.10% 40.67% 37.72% 36.75% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN%   
      selling, general and administrative
    101,260,000 87,360,000 87,812,000 85,846,000 95,287,000 82,389,000 84,119,000 80,383,000 90,206,000 84,343,000 79,125,000 82,896,000 88,849,000 80,971,000 75,381,000 70,575,000 75,765,000 68,477,000 66,065,000 62,740,000 69,629,000 58,860,000 61,720,000 65,612,000 72,080,000 106,311,000 64,656,000 69,150,000 72,796,000 304,326,968 70,032 92,588,000 76,796,000 178,431,311 51,689 46,531,000 46,118,000 40,804,000 40,645,000 42,842,000 50,461,000 48,759,000 49,165,000 51,044,000 49,331,000 52,065,000 53,598,000 43,241,000 40,938,000 44,156,000 37,711,000 44,473,000 43,199,000 53,100,000 49,102,000 52,780,000 39,047,000 29,457,000 27,328,000 29,334,000 27,661,000 33,371,000 29,908,000 27,949,000 28,734,000 34,810,000 39,822,000 36,026,000 33,451,000 32,872,000 30,665,000 31,313,000 29,468,000 30,506,000 28,128,000 29,321,000 26,518,000 23,761,000 23,861,000 21,600,000 22,228,000 20,959,000   
      taxes, other than on income
    9,852,000 6,482,000 9,768,000 10,542,000 8,830,000 7,583,000 8,973,000 10,310,000 8,044,000 6,156,000 9,666,000 9,758,000 9,186,000 6,739,000 9,121,000 9,621,000 9,590,000 7,710,000 9,917,000 10,364,000 8,260,000 8,452,000 9,077,000 13,065,000 11,406,000 10,447,000 10,909,000 10,579,000 9,998,000 39,240,477 10,523 10,552,000 8,535,000 14,512,482 6,518 6,344,000 6,649,000 6,413,000 5,445,000 5,468,000 5,404,000 5,482,000 5,378,000 4,545,000 3,701,000 4,624,000 4,580,000 3,714,000 4,397,000 4,478,000 3,243,000 3,455,000 3,907,000 3,914,000 2,711,000 3,244,000 3,723,000 3,501,000 3,038,000 3,092,000 3,576,000 3,503,000 2,837,000 2,989,000 3,193,000 3,085,000 2,572,000 3,560,000 3,455,000 3,533,000 3,533,000 3,237,000 3,255,000 3,134,000 2,947,000 3,289,000 3,403,000 3,187,000 2,972,000 3,203,000 2,909,000 3,186,000   
      depreciation and amortization
    68,238,000 67,853,000 66,873,000 65,670,000 63,730,000 62,545,000 60,653,000 59,482,000 57,642,000 54,905,000 53,445,000 51,697,000 51,109,000 50,945,000 50,419,000 50,115,000 49,964,000 50,234,000 53,462,000 55,132,000 54,890,000 54,854,000 54,779,000 54,502,000 55,786,000 54,861,000 54,455,000 55,093,000 55,223,000 224,914,070 57,930 55,492,000 54,218,000 145,095,794 51,206 48,293,000 48,170,000 52,490,000 50,142,000 49,661,000 48,624,000 49,759,000 46,825,000 45,766,000 42,433,000 41,407,000 41,036,000 41,640,000 40,271,000 40,996,000 37,747,000 35,729,000 35,197,000 36,474,000 35,796,000 36,827,000 28,213,000 25,193,000 24,937,000 24,135,000 22,854,000 23,370,000 24,244,000 24,929,000 22,519,000 22,276,000 24,067,000 22,420,000 22,385,000 22,327,000 20,642,000 20,407,000 20,280,000 19,587,000 17,102,000 16,689,000 15,515,000 15,090,000 14,735,000 13,725,000 13,964,000 14,981,000   
      gain on disposition of assets
    -1,453,000 -29,000 -3,002,000 -1,687,000 -70,000 -1,000 -1,617,000 -515,000 -74,000 -779,000 -1,528,000 -472,000 -2,230,000 -308,000 -377,000 -2,745,000 -4,849,000    -2,133,000    -492,000   -3,118,000 -2,157,000 -1,967,982 -18 -442,000 -1,898,000 39.75 159 139,000 -99,000 -9,750 122,000 -94,000 -67,000 400,000 -91,000 -1,555,000 -47,000 -527,000   -537,000    -69,000    -40,000    19,000  38,000 -753,000 -120,000 -244,000 134,000 166,000 -500,000  -148,000 -30,000 62,000 499,000 -239,000 -255,000 -785,000 -157,000 -397,000 24,000 -1,795,000    
      total costs and expenses
    736,426,000 722,102,000 741,942,000 723,609,000 680,113,000 752,169,000 704,219,000 703,892,000 706,499,000 706,357,000 671,249,000 689,948,000 688,994,000 672,416,000 686,936,000 651,428,000 581,088,000 559,665,000 915,846,000 535,596,000 493,686,000 464,982,000 466,656,000 506,907,000 1,025,689,000 639,750,000 588,908,000 695,199,000 672,515,000 2,814,771,112 636,888 746,818,000 690,968,000 1,747,337,088 487,912 425,847,000 446,134,000 378,850,000 378,522,000 374,774,000 393,332,000 437,515,000 445,022,000 484,581,000 552,595,000 501,029,000 482,392,000 432,768,000 454,656,000 458,936,000 413,113,000 428,687,000 428,150,000 477,875,000 457,232,000 471,274,000 365,852,000 243,716,000 232,654,000 228,582,000 223,037,000 225,240,000 209,771,000 212,300,000 215,036,000 229,021,000 260,425,000 283,047,000 279,050,000                
      operating income
    107,673,000 129,673,000 129,219,000 131,846,000 105,546,000 50,146,000 126,930,000 120,498,000 101,523,000 92,819,000 93,523,000 87,300,000 61,450,000 57,749,000 58,907,000 46,536,000 29,694,000 31,601,000 -316,926,000 24,028,000 3,164,000 24,774,000 29,911,000 34,252,000 -381,763,000 16,177,000 77,901,000 75,843,000 72,106,000 155,221,043 67,957 55,853,000 50,720,000 364,779,638 53,362 47,481,000 45,571,000 56,800,000 56,186,000 66,808,000 65,401,000 95,050,000 98,134,000 103,092,000 128,126,000 127,025,000 106,854,000 118,337,000 109,252,000 99,849,000 99,438,000 92,637,000 83,698,000 89,060,000 92,913,000 92,308,000 71,479,000 55,643,000 53,664,000 52,735,000 50,632,000 43,013,000 49,817,000 59,866,000 57,707,000 48,640,000 66,252,000 71,600,000 69,210,000 63,434,000 60,276,000 61,291,000 54,335,000 44,886,000 43,519,000 46,161,000 41,046,000 38,644,000 22,302,500 29,924,000 33,703,000 25,583,000   
      yoy
    2.02% 158.59% 1.80% 9.42% 3.96% -45.97% 35.72% 38.03% 65.21% 60.73% 58.76% 87.60% 106.94% 82.74% -118.59% 93.67% 838.50% 27.56% -1159.56% -29.85% -100.83% 53.14% -61.60% -54.84% -629.45% -89.58% 114532.78% 35.79% 42.16% -57.45% 27.35% 17.63% 11.30% 542.22% -99.91% -28.93% -30.32% -40.24% -42.75% -35.20% -48.96% -25.17% -8.16% -12.88% 17.28% 27.22% 7.46% 27.74% 30.53% 12.11% 7.02% 0.36% 17.09% 60.06% 73.14% 75.04% 41.17% 29.36% 7.72% -11.91% -12.26% -11.57% -24.81% -16.39% -16.62% -23.32% 9.91% 16.82% 27.38% 41.32% 38.51% 32.78% 32.38% 16.15% 95.13% 54.26% 21.79% 51.05%       
      qoq
    -16.97% 0.35% -1.99% 24.92% 110.48% -60.49% 5.34% 18.69% 9.38% -0.75% 7.13% 42.07% 6.41% -1.97% 26.58% 56.72% -6.03% -109.97% -1418.99% 659.42% -87.23% -17.17% -12.67% -108.97% -2459.91% -79.23% 2.71% 5.18% -53.55% 228310.68% -99.88% 10.12% -86.10% 683494.39% -99.89% 4.19% -19.77% 1.09% -15.90% 2.15% -31.19% -3.14% -4.81% -19.54% 0.87% 18.88% -9.70% 8.32% 9.42% 0.41% 7.34% 10.68% -6.02% -4.15% 0.66% 29.14% 28.46% 3.69% 1.76% 4.15% 17.71% -13.66% -16.79% 3.74% 18.64% -26.58% -7.47% 3.45% 9.11% 5.24% -1.66% 12.80% 21.05% 3.14% -5.72% 12.46% 6.22% 73.27% -25.47% -11.21% 31.74%    
      operating margin %
    12.76% 15.22% 14.83% 15.41% 13.43% 6.25% 15.27% 14.62% 12.56% 11.61% 12.23% 11.23% 8.19% 7.91% 7.90% 6.67% 4.86% 5.34% -52.92% 4.29% 0.64% 5.06% 6.02% 6.33% -59.29% 2.47% 11.68% 9.84% 9.68% 5.23% 9.64% 6.96% 6.84% 17.27% 9.86% 10.03% 9.27% 13.04% 12.92% 15.13% 14.26% 17.85% 18.07% 17.54% 18.82% 20.23% 18.13% 21.47% 19.37% 17.87% 19.40% 17.77% 16.35% 15.71% 16.89% 16.38% 16.34% 18.59% 18.74% 18.75% 18.50% 16.03% 19.19% 22.00% 21.16% 17.52% 20.28% 20.19% 19.87% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity%   
      other income
    7,281,000 5,752,000 5,557,000 4,812,000 5,334,000 3,489,000 2,949,000 3,088,000 3,269,000 1,745,000 1,589,000 1,264,000 6,443,000 4,824,000 3,805,000 3,740,000 4,308,000 1,855,000 1,832,000 2,523,000 3,791,000 1,962,000 1,172,000 2,290,000 2,723,000 731,000 864,000 2,381,000 -568,000 5,369,546 1,454 1,541,000 1,591,000 -197,887 -113 -1,000 -116,000 48,500 -120,000 179,000 135,000 22,000 -303,000 60,000 27,000 123,000 -236,000 60,000 101,000 75,000 -321,000 -56,000 30,000 149,000 -164,000 -6,000 78,000 51,000 100,000 131,000 30,000 12,000 -641,000 189,000 91,000 95,000 452,000 -515,000 -329,000 -257,000 461,000 -274,000 -160,000 -248,000 341,000 -389,000 -134,000 66,000 840,000 -443,000 -400,000    
      interest expense
    -10,250,000 -11,222,000 -11,838,000 -12,730,000 -10,537,000 -10,661,000 -12,498,000 -12,819,000 -13,151,000 -13,115,000 -13,386,000 -12,286,000 -13,221,000 -11,990,000 -11,755,000 -10,640,000 -10,203,000 -10,297,000 -10,500,000 -10,706,000 -10,966,000 -11,423,000 -11,809,000 -12,708,000 -12,799,000 -12,968,000 -14,310,000 -15,515,000 -13,201,000 -46,843,655 -12,345 -12,540,000 -9,780,000 -24,379,612 -5,388 -4,465,000 -4,457,000 -4,477,000 -4,507,000 -4,513,000 -4,193,000 -4,449,000 -4,759,000 -5,250,000 -5,225,000 -5,469,000 -5,618,000 -6,694,000 -7,219,000 -7,988,000 -6,588,000 -6,056,000 -5,901,000 -5,840,000 -5,817,000 -5,974,000 -3,278,000 -2,833,000 -2,845,000 -2,750,000 -2,697,000 -2,668,000 -2,693,000 -2,781,000 -2,793,000 -2,813,000 -3,399,000 -3,375,000 -3,508,000 -3,782,000 -4,458,000 -5,236,000 -5,436,000 -5,154,000 -4,696,000 -4,503,000 -3,304,000 -2,698,000 -3,527,000 -2,997,000 -3,113,000 -3,146,000   
      earnings before taxes on income
    104,704,000 124,203,000 122,938,000 123,928,000 100,343,000 42,974,000 117,381,000 110,767,000 91,641,000 81,449,000 81,726,000 76,278,000 54,672,000 50,583,000 50,957,000 39,636,000 23,799,000 23,159,000 -325,594,000 15,845,000  15,313,000 19,274,000 23,834,000 -391,839,000 4,319,000 64,455,000 62,709,000 58,337,000 114,101,934 57,066 44,854,000 42,531,000 340,478,139 47,861 43,015,000 40,998,000 52,370,000 51,559,000 62,474,000 61,343,000 90,623,000 93,072,000 97,902,000 122,928,000 121,679,000 101,000,000 111,703,000 102,134,000 91,936,000 92,805,000 86,525,000 77,827,000 83,369,000 87,279,000 86,328,000 68,279,000 52,861,000 51,202,000 50,116,000 47,965,000 40,357,000 47,357,000 57,274,000 55,005,000 45,922,000 62,134,000 67,710,000 65,373,000 59,395,000 55,603,000 55,803,000 48,844,000 39,582,000 38,672,000 41,357,000 37,695,000 36,478,000 19,762,500 27,879,000 29,753,000 21,418,000   
      provision for taxes on income
    -23,378,000 -32,174,000 -30,200,000 -29,550,000 -24,073,000 -6,000 -27,350,000 -26,785,000 -21,726,000 -12,933,250 -18,722,000 -18,960,000 -14,051,000   -11,030,000                     -13,353,000         -45,768,000 -37,989,000 -42,007,000  -34,384,000 -23,419,000 -32,794,000  -31,490,000 -30,510,000 -32,734,000   -13,244,750 -19,211,000  -15,446,000                -13,898,000    -8,139,000   
      net earnings
    81,326,000 92,029,000 92,738,000 94,378,000 76,270,000 42,968,000 90,031,000 83,982,000 69,915,000 61,962,000 63,004,000 57,318,000 40,621,000 37,325,000 39,244,000 28,606,000 17,586,000 11,149,000 -265,152,000 10,352,000  22,415,000 27,693,000 25,263,000 -248,190,000 2,972,000 48,150,000 47,440,000 44,457,000 79,036,050 41,950 28,793,000 32,666,000 212,590,211 28,789 25,972,000 27,645,000 32,858,000 32,353,000 39,109,000 38,484,000 57,111,000 58,376,000 61,411,000 77,213,000 75,911,000 63,011,000 69,696,000 63,792,000 57,552,000 58,574,000 53,731,000 48,435,000 51,879,000 56,769,000 53,594,000 42,229,000 32,900,000 31,923,000 30,905,000 29,643,000 24,911,000 29,641,000 35,448,000 33,985,000 28,464,000 38,409,000 41,778,000 40,334,000 36,647,000 34,352,000 34,430,000 30,137,000 24,422,000 23,938,000 25,600,000 23,333,000 22,580,000 12,252,750 17,285,000 18,447,000 13,279,000   
      net earnings attributable to noncontrolling interests
    -129,000 -156,750 -242,000             -149,000 -152,000             -33.5 -134   -2,999 -182                                                  
      net earnings attributable to kirby
    81,197,000 91,810,000 92,496,000 94,277,000 75,986,000 42,817,000 89,968,000 83,854,000 70,068,000 61,906,000 62,964,000 57,367,000 40,698,000 37,309,000 39,091,000 28,457,000 17,434,000 10,961,000 -264,730,000 10,190,000  22,204,000 27,489,000 25,002,000 -248,468,000 2,777,000 47,987,000 47,287,000 44,296,000 78,410,184 41,816 28,602,000 32,471,000 209,409,393 28,607 25,778,000 27,483,000 32,355,000 32,010,000 38,942,000 38,099,000 56,843,000 58,075,000 61,078,000 76,717,000 74,992,000 62,246,000 69,123,000 63,093,000 56,578,000 57,888,000 53,055,000 47,551,000 50,944,000 56,170,000 52,734,000 41,692,000 32,430,000 31,620,000 30,687,000 29,268,000 24,674,000 29,202,000 35,014,000 33,719,000 28,006,000                   
      yoy
    6.86% 114.42% 2.81% 12.43% 8.45% -30.84% 42.89% 46.17% 72.17% 65.93% 61.07% 101.59% 133.44% 240.38% -114.77% 179.26%  -50.64% -1063.04% -59.24%  699.57% -42.72% -47.13% -660.93% -96.46% 114657.51% 65.33% 36.42% -62.56% 46.17% 10.96% 18.15% 547.22% -99.91% -33.80% -27.86% -43.08% -44.88% -36.24% -50.34% -24.20% -6.70% -11.64% 21.59% 32.55% 7.53% 30.29% 32.68% 11.06% 3.06% 0.61% 14.05% 57.09% 77.64% 71.84% 42.45% 31.43% 8.28% -12.36% -13.20% -11.90%                       
      qoq
    -11.56% -0.74% -1.89% 24.07% 77.47% -52.41% 7.29% 19.68% 13.18% -1.68% 9.76% 40.96% 9.08% -4.56% 37.37% 63.23% 59.05% -104.14% -2697.94%   -19.23% 9.95% -110.06% -9047.35% -94.21% 1.48% 6.75% -43.51% 187412.40% -99.85% -11.92% -84.49% 731921.51% -99.89% -6.20% -15.06% 1.08% -17.80% 2.21% -32.98% -2.12% -4.92% -20.39% 2.30% 20.48% -9.95% 9.56% 11.52% -2.26% 9.11% 11.57% -6.66% -9.30% 6.52% 26.48% 28.56% 2.56% 3.04% 4.85% 18.62% -15.51% -16.60% 3.84% 20.40%                    
      net income margin %
    9.62% 10.78% 10.62% 11.02% 9.67% 5.34% 10.82% 10.17% 8.67% 7.75% 8.23% 7.38% 5.42% 5.11% 5.24% 4.08% 2.85% 1.85% -44.20% 1.82% 0% 4.53% 5.54% 4.62% -38.59% 0.42% 7.20% 6.13% 5.95% 2.64% 5.93% 3.56% 4.38% 9.91% 5.29% 5.45% 5.59% 7.43% 7.36% 8.82% 8.31% 10.67% 10.69% 10.39% 11.27% 11.94% 10.56% 12.54% 11.19% 10.13% 11.29% 10.18% 9.29% 8.99% 10.21% 9.36% 9.53% 10.83% 11.04% 10.91% 10.69% 9.20% 11.25% 12.86% 12.36% 10.09% 0% 0% 0% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN%   
      net earnings per share attributable to kirby common stockholders:
                                                                                        
      basic
    1.51 1.7 1.66 1.68 1.33 0.75 1.56 1.44 1.2 1.04 1.06 0.96 0.68 0.63 0.65 0.47 0.29 0.19 -4.41 0.17  0.37 0.46 0.42 -4.15 0.05 0.8 0.79 0.74 0.61 0.7 0.48 0.54 3.23 0.52 0.48 0.51 0.6 0.59 0.72 0.71 1.04 1.04 1.09 1.34 1.32 1.09 1.22 1.11 1.04 0.95 0.85 0.91 1.02 0.95 0.78 0.6 0.59 0.57 0.54 0.46 0.54 0.65 0.63 0.53 0.72 0.78 0.75 0.69 0.65 0.65 0.57 0.46 0.46 0.49 0.44 0.87 0.78 0.69 0.74 0.53   
      diluted
    1.5 1.69 1.65 1.67 1.33 0.74 1.55 1.43 1.19 1.04 1.05 0.95 0.68 0.62 0.65 0.47 0.29 0.19 -4.41 0.17  0.37 0.46 0.42 -4.15 0.05 0.8 0.79 0.74 0.61 0.7 0.48 0.54 3.21 0.52 0.48 0.51 0.6 0.59 0.72 0.71 1.04 1.04 1.09 1.34 1.31 1.09 1.21 1.11 1.03 0.95 0.85 0.91 0.94 0.77 0.6 0.59 0.57 0.54 0.46 0.55 0.65 0.63 0.52 0.72 0.77 0.74 0.68 0.63 0.64 0.56 0.46 0.45 0.48 0.44 0.85 0.76 0.67 0.72 0.52   
      net (earnings) loss attributable to noncontrolling interests
       -101,000 -284,000 -9,500 -63,000 -128,000  21,500 -40,000 49,000 77,000 -113,500 -153,000   1,250 422,000                                                                  
      net loss attributable to noncontrolling interests
            153,000                                                                            
      impairments
                                                                                        
      benefit for taxes on income
                 -13,258,000 -11,713,000  -6,213,000 -12,010,000 60,442,000 -5,493,000 891,000 7,102,000 8,419,000 1,429,000 143,649,000                                                            
      impairments and other charges
                      340,713,000      433,341,000                                                            
      loss on disposition of assets
                     -1,270,500 -830,000 -2,119,000  3,250 316,000                        -51,000 -223,000  32,000 15,000 40,000  28,000 111,000 -97,000  66,000 13,750 -8,000  44,000        58,000            -192,000   
      less: net earnings attributable to noncontrolling interests
                       -162,000 -255,000 -211,000 -204,000 -261,000 -278,000 -195,000 -163,000 -153,000 -161,000 -625,866 -134 -191,000 -195,000 -3,180,818 -182 -194,000 -162,000 -503,000 -343,000 -167,000 -385,000 -268,000 -301,000 -333,000 -496,000 -919,000 -765,000 -573,000 -699,000 -974,000 -686,000 -676,000 -884,000 -935,000 -599,000 -860,000 -537,000 -470,000 -303,000 -218,000 -375,000 -237,000 -439,000 -434,000 -266,000 -458,000                   
      loss before taxes on income
                        -4,011,000                                                                
      net income
                        -3,120,000                                                                
      net loss attributable to kirby
                        -3,375,000                                                                
      net income per share
                                                                                        
      basic
                        -0.06                                                                
      diluted
                        -0.06                                                                
      (gain) loss on disposition of assets
                           189,000  -1,225,250 374,000                                                          
      benefit from taxes on income
                             -11,363,500 -16,305,000 -15,269,000 -13,880,000 -3,779 -15,116 -16,061,000 -9,865,000 -127,887,928 -19,072 -17,043,000  -16,357,500 -19,206,000 -23,365,000 -22,859,000 -33,512,000 -34,696,000 -36,491,000 -45,715,000    -38,342,000    -29,392,000    -26,050,000 -19,961,000   -18,322,000  -17,716,000 -21,826,000 -21,020,000 -17,458,000 -23,725,000 -25,932,000 -25,039,000 -22,748,000 -21,251,000 -21,373,000 -18,707,000 -15,160,000 -14,734,000 -15,757,000 -14,362,000  -12,302,000 -10,594,000 -11,306,000    
      current assets:
                                                                                        
      cash and cash equivalents
                                 904,250 3,617,000   -4,825,984 4,826,000                                                  
      accounts receivable:
                                                                                        
      trade – less allowance for doubtful accounts
                                 100,217,500 400,870,000   108,323,750 433,295,000                                                  
      other
                                 27,805,250 111,221,000   -77,909,076 77,913,000                                                  
      inventories – net
                                 113,293,250 453,173,000   80,850,750 323,403,000                                                  
      prepaid expenses and other current assets
                                 21,409,750 85,639,000   12,831,750 51,327,000                                                  
      total current assets
                                 263,630,000 1,054,520,000   222,691,000 890,764,000                                                  
      property and equipment
                                 1,264,083,750 5,056,335,000   1,145,860,500 4,583,442,000                                                  
      less accumulated depreciation
                                 -373,708,750 -1,494,835,000   -371,833,000 -1,487,332,000                                                  
      property and equipment – net
                                 890,375,000 3,561,500,000   774,027,500 3,096,110,000                                                  
      goodwill
                                 240,001,500 960,006,000   229,819,000 919,276,000                                                  
      other intangibles – net
                                 57,239,500 228,958,000                                                      
      other assets
                                 12,337,000 49,348,000   -294,270,180 294,265,000                                                  
      total assets
                                 1,463,583,000 5,854,332,000   1,300,103,750 5,200,415,000                                                  
      current liabilities:
                                                                                        
      bank notes payable
                                 127,000 508,000   224,750 899,000                                                  
      income taxes payable
                                 941,250 3,765,000   -1,438,347 1,434,000                                                  
      accounts payable
                                 62,670,250 250,681,000   -214,119,484 214,109,000                                                  
      accrued liabilities
                                 59,282,250 237,129,000   50,956,500 203,826,000                                                  
      deferred revenues
                                 18,960,750 75,843,000   10,105,250 40,421,000                                                  
      total current liabilities
                                 141,981,500 567,926,000   115,547,500 462,190,000                                                  
      long-term debt – less current portion
                                 349,855,750 1,399,423,000   257,757,000 1,031,028,000                                                  
      deferred income taxes
                                 136,220,500 544,882,000   189,067,000 756,268,000                                                  
      other long-term liabilities
                                 27,238,250 108,953,000   18,700,250 74,801,000                                                  
      total long-term liabilities
                                 513,314,500 2,053,258,000   465,524,250 1,862,097,000                                                  
      contingencies and commitments
                                                                                        
      equity:
                                                                                        
      kirby stockholders’ equity:
                                                                                        
      common stock, .10 par value per share. authorized 120,000,000 shares, issued 65,472,000 shares
                                 1,636.75 6,547   1,636.75 6,547                                                  
      additional paid-in capital
                                 205,201.25 820,805   199,928.5 799,714                                                  
      accumulated other comprehensive income – net
                                 -9,886 -39,544   -8,944.5 -35,778                                                  
      retained earnings
                                 687,007.25 2,748,029   603,904.5 2,415,618                                                  
      treasury stock – at cost, 5,595,000 shares at september 30, 2018 and 5,783,000 at december 31, 2017
                                 -76,481.5 -305,926                                                      
      total kirby stockholders’ equity
                                 807,477.75 3,229,911   718,169.5 2,872,678                                                  
      noncontrolling interests
                                 809.25 3,237   862.5 3,450                                                  
      total equity
                                 808,287 3,233,148   719,032 2,876,128                                                  
      total liabilities and equity
                                 1,463,583 5,854,332   1,300,103.75 5,200,415                                                  
      other comprehensive income, net of taxes:
                                                                                        
      pension and postretirement benefits
                                 109.5 438   -10,777 507                                                  
      foreign currency translation adjustments
                                 -15 -60   266 -164                                                  
      reclassification to retained earnings of stranded tax effects from tax reform
                                                                                        
      total other comprehensive income, net of taxes
                                 94.5 378   85.75 343                                                  
      total comprehensive income, net of taxes
                                 10,582 42,328   178,536 29,132                                                  
      comprehensive income attributable to kirby
                                 10,548.5 42,194   175,537 28,950                                                  
      cash flows from operating activities:
                                                                                        
      adjustments to reconcile net earnings to net cash from operations:
                                                                                        
      benefit from deferred income taxes
                                 9,209.5 36,838   44,222 32,783                                                  
      amortization of unearned share-based compensation
                                 4,162.25 16,649   805 8,991                                                  
      amortization of major maintenance costs
                                 3,900 15,600   3,808 15,232                                                  
      amortization of debt issuance costs
                                 224.5 898   196.5 786                                                  
      decrease in cash flows resulting from changes in operating assets and liabilities
                                 -16,676.75 -66,707                                                      
      net cash from operating activities
                                 68,076 272,304   66,275 259,455                                                  
      cash flows from investing activities:
                                                                                        
      capital expenditures
                                 -57,938 -231,752   -178,730 -133,437                                                  
      acquisitions of businesses and marine equipment, net of cash acquired
                                 -124,806.75 -499,227   70,294 -451,219                                                  
      proceeds from disposition of assets
                                 6,951.5 27,806   -10,092 29,743                                                  
      net cash from investing activities
                                 -175,793.25 -703,173   -118,528 -554,913                                                  
      cash flows from financing activities:
                                                                                        
      borrowings (payments) on bank credit facilities
                                 -22,098 -88,392   74,295.25 297,181                                                  
      borrowings (payments) on long-term debt
                                 124,823.75 499,295                                                      
      payments of debt issue costs
                                 -1,069 -4,276                                                      
      proceeds from exercise of stock options
                                 3,316 13,264   6,856 2,076                                                  
      payments related to tax withholding for share-based compensation
                                 -1,205.25 -4,821   -724.75 -2,899                                                  
      net cash from financing activities
                                 103,596 414,384   47,871 294,650                                                  
      decrease in cash and cash equivalents
                                 -4,121.25 -16,485   -202 -808                                                  
      cash and cash equivalents, beginning of year
                                 5,025.5 20,102   10,615 5,634                                                  
      cash and cash equivalents, end of period
                                 904.25 3,617   1,206.5 4,826                                                  
      supplemental disclosures of cash flow information:
                                                                                        
      cash paid during the period:
                                                                                        
      interest paid
                                 9,293.75 37,175   4,597.5 18,390                                                  
      income taxes
                                 123.75 495                                                      
      capital expenditures included in accounts payable
                                 -1,388.5 -5,554   2,229.25 8,917                                                  
      non-cash investing activity:
                                                                                        
      stock issued in acquisition
                                     91,638.5 366,554                                                  
      cash acquired in acquisition
                                 578.25 2,313   24.5 98                                                  
      debt assumed in acquisition
                                     3,431 13,724                                                  
      basis for preparation of the condensed financial statements
                                                                                        
      accounting standards adoptions
                                                                                        
      statements of earnings:
                                                                                        
      distribution and services revenues
                                 80,701.25 322,805   55,616 222,464                                                  
      statements of comprehensive income:
                                                                                        
      statements of cash flows:
                                                                                        
      balance sheets:
                                                                                        
      trade receivables
                                 100,217.5 400,870                                                      
      revenues
                                                                                        
      marine transportation segment:
                                                                                        
      inland transportation
                                 72,143.25 288,573                                                      
      coastal transportation
                                 23,366.75 93,467                                                      
      distribution and services segment:
                                                                                        
      oil and gas
                                 50,368.75 201,475                                                      
      commercial and industrial
                                 30,332.5 121,330                                                      
      acquisitions
                                                                                        
      assets:
                                                                                        
      cash
                                 578.25 2,313   24.5 98                                                  
      accounts receivable
                                 6,881.75 27,527   -106,635 97,891                                                  
      liabilities:
                                                                                        
      total liabilities
                                 29,839.25 119,357   34,765.25 139,061                                                  
      net assets acquired
                                 105,480.5 421,922   186,130.25 744,521                                                  
      inventories
                                     37,500 150,000                                                  
      finished goods
                                 84,175.75 336,703   -117,534 280,393                                                  
      work in process
                                 29,117.5 116,470   -28,472 43,010                                                  
      fair value measurements
                                                                                        
      long-term debt
                                     2,658.5 10,634                                                  
      stock award plans
                                                                                        
      compensation cost
                                 774.5 3,098   6,161 3,067                                                  
      income tax benefit
                                 177.25 709   2,300 1,234                                                  
      outstanding at december 31, 2017
                                 163,663.75 654,655                                                      
      granted
                                 28,949.25 115,797   -123,018.4 123,051                                                  
      exercised
                                 -70,971.5 -283,886   21,163.36 -21,135                                                  
      forfeited
                                 -5,466 -21,864   17,054 -17,022                                                  
      outstanding at september 30, 2018
                                 116,175.5 464,702                                                      
      range of exercise prices
                                                                                        
      51.23
                                                                                        
      64.65 - 68.50
                                                                                        
      70.65 - 75.50
                                                                                        
      93.64 - 101.46
                                                                                        
      51.23 - 101.46
                                                                                        
      nonvested balance at december 31, 2017
                                 91,030.25 364,121                                                      
      vested
                                 -36,060 -144,240   105,469.34 -105,430                                                  
      nonvested balance at september 30, 2018
                                 53,983 215,932                                                      
      29.60
                                                                                        
      41.24 – 56.45
                                                                                        
      61.89 – 62.48
                                                                                        
      70.65 – 99.52
                                                                                        
      29.60 – 99.52
                                                                                        
      dividend yield
                                                                                        
      average risk-free interest rate
                                 0.675 2.7   0.4                                                  
      stock price volatility
                                 6.75 27   27                                                  
      estimated option term
                                                                                        
      other comprehensive income
                                                                                        
      amortization of net actuarial loss
                                 145 580   205.5 822                                                  
      foreign currency translation
                                 -15 -60   -41 -164                                                  
      total
                                 130 520   164.5 658                                                  
      actuarial gains
                                 -152.25 -609   5,503.5 22,014                                                  
      adoption of asu 2018-02 – reclassification to retained earnings
                                                                                        
      segment data
                                                                                        
      segment profit:
                                                                                        
      total assets:
                                                                                        
      general corporate expenses
                                 -1,123 -4,492   -1,123.75 -4,495                                                  
      general corporate assets
                                 14,807.25 59,229   12,273 49,092                                                  
      investment in affiliates
                                 545.5 2,182   462.75 1,851                                                  
      taxes on income
                                                                                        
      earnings before taxes on income:
                                                                                        
      united states
                                 14,495 57,980                                                      
      foreign
                                 -228.5 -914                                                      
      benefit from taxes on income:
                                                                                        
      federal:
                                                                                        
      current
                                     30,023 3,617                                                  
      deferred
                                 3,364.25 13,457   51,319 14,132                                                  
      state and local:
                                                                                        
      foreign - current
                                 25 100                                                      
      earnings per share
                                                                                        
      undistributed earnings allocated to restricted shares
                                 -41.5 -166   -53.25 -213                                                  
      income available to kirby common stockholders - basic
                                 10,412.5 41,650   7,098.5 28,394                                                  
      undistributed earnings reallocated to restricted shares
                                 -41.25 -165   -53.25 -213                                                  
      income available to kirby common stockholders - diluted
                                 10,412.75 41,651   7,098.5 28,394                                                  
      shares outstanding:
                                                                                        
      weighted-average common stock issued and outstanding
                                  59,875    55,177                                                  
      weighted-average unvested restricted stock
                                  -237    -412                                                  
      weighted-average common stock outstanding - basic
                                  59,638    54,765                                                  
      dilutive effect of stock options and restricted stock units
                                 36.5 146                                                      
      weighted-average common stock outstanding - diluted
                                  59,784    54,803                                                  
      retirement plans
                                                                                        
      components of net periodic benefit cost:
                                 504.5 2,018                                                      
      service cost
                                 430.5 1,722   5,561 1,742                                                  
      interest cost
                                 984.75 3,939   6,373 3,320                                                  
      expected return on plan assets
                                 -1,424 -5,696   -1,148.75 -4,595                                                  
      amortization of actuarial loss
                                 180.75 723   245.25 981                                                  
      net periodic benefit cost
                                 172 688   -1,361 1,448                                                  
      amortization of actuarial gain
                                 -37.25 -149   -41.5 -166                                                  
      contingencies
                                                                                        
      item 2.
                                                                                        
      weighted-average number of common stock - diluted
                                  59,784    54,803                                                  
      marine transportation revenues
                                 95,510 382,040   79,702.5 318,810                                                  
      operating margins
                                 3.175 12.7   2.825 11.3                                                  
      markets serviced
                                 504.5 2,018   504.25 2,017                                                  
      petrochemicals
                                 14.25 57   14 56                                                  
      black oil
                                 5.5 22   5.5 22                                                  
      refined petroleum products
                                 4.5 18   4.5 18                                                  
      agricultural chemicals
                                 0.75                                                    
      current assets
                                 263,630 1,054,520   222,691 890,764                                                  
      other intangibles
                                 57,239.5 228,958                                                      
      liabilities and stockholders’ equity:
                                                                                        
      current liabilities
                                 141,981.5 567,926   115,547.5 462,190                                                  
      item 3.
                                                                                        
      item 4.
                                                                                        
      item 1.
                                                                                        
      item 1a.
                                                                                        
      item 6.
                                                                                        
      31.1
                                                                                        
      31.2
                                                                                        
      32
                                                                                        
      101.ins*
                                                                                        
      101.sch*
                                                                                        
      101.cal*
                                                                                        
      101.def*
                                                                                        
      101.lab*
                                                                                        
      101.pre*
                                                                                        
      *
                                                                                        
      kirby corporation
                                                                                        
      by:
                                                                                        
      current portion of long-term debt
                                     375,250 1,501,000                                                  
      treasury stock – at cost, 5,784,000 shares at september 30, 2017 and 5,921,000 at december 31, 2016
                                     -78,355.75 -313,423                                                  
      increase in cash flows resulting from changes in operating assets and liabilities
                                     -7,148 -28,592                                                  
      payments on long-term debt
                                     -37,940 -1,065                                                  
      purchase of treasury stock
                                                                                        
      acquisition of noncontrolling interests
                                     -1.75 -7                                                  
      income taxes paid
                                     4,847 19,388                                                  
      fair value of property transferred in acquisition
                                                                                        
      cash consideration paid
                                     94,491.75 377,967                                                  
      stock consideration through issuance of company common stock
                                     91,638.5 366,554                                                  
      fair value of consideration transferred
                                     186,130.25 744,521                                                  
      outstanding at december 31, 2016
                                     150,280.25 601,121                                                  
      outstanding at september 30, 2017
                                     171,503.75 686,015                                                  
      46.74 - 51.23
                                                                                        
      64.65 - 74.99
                                                                                        
      93.64 - 96.85
                                                                                        
      101.46 - 104.37
                                                                                        
      46.74 - 104.37
                                                                                        
      nonvested balance at december 31, 2016
                                     94,413.75 377,655                                                  
      nonvested balance at september 30, 2017
                                     94,546.5 378,186                                                  
      actuarial losses
                                                                                        
      earnings before taxes on income – united states
                                     11,965.25 47,861                                                  
      state and local
                                     8,841 1,323                                                  
      dilutive effect of stock options
                                     9.5 38                                                  
      subsequent event
                                                                                        
      land-based
                                     20 80                                                  
      marine
                                     3.25 13                                                  
      power generation
                                     1.75                                                  
      10.1†*
                                     501.25 2,005                                                  
      †
                                                                                        
      dated: november 8, 2017
                                                                                        
      diesel engine services
                                       142,063,000 148,053,000 79,434,000 75,677,000 63,279,000 80,390,000 114,222,000 118,103,000 167,768,000 231,977,000 171,309,000 153,475,000 114,924,000 140,040,000 140,267,000 131,581,000 171,553,000 169,653,000 230,978,000 215,033,000 212,376,000 170,719,000 57,682,000 53,875,000 48,532,000 43,413,000 48,691,000 42,684,000 44,699,000 54,837,000 58,640,000 61,216,000 67,767,000 66,354,000 69,342,000 59,155,000 61,227,000 58,263,000 65,146,000 48,746,000 53,532,000 39,204,000 35,520,000 27,473,000 26,482,000 28,534,000 27,234,000   
      net earnings per share of common stock:
                                                                                        
      basic
    1.51 1.7 1.66 1.68 1.33 0.75 1.56 1.44 1.2 1.04 1.06 0.96 0.68 0.63 0.65 0.47 0.29 0.19 -4.41 0.17  0.37 0.46 0.42 -4.15 0.05 0.8 0.79 0.74 0.61 0.7 0.48 0.54 3.23 0.52 0.48 0.51 0.6 0.59 0.72 0.71 1.04 1.04 1.09 1.34 1.32 1.09 1.22 1.11 1.04 0.95 0.85 0.91 1.02 0.95 0.78 0.6 0.59 0.57 0.54 0.46 0.54 0.65 0.63 0.53 0.72 0.78 0.75 0.69 0.65 0.65 0.57 0.46 0.46 0.49 0.44 0.87 0.78 0.69 0.74 0.53   
      diluted
    1.5 1.69 1.65 1.67 1.33 0.74 1.55 1.43 1.19 1.04 1.05 0.95 0.68 0.62 0.65 0.47 0.29 0.19 -4.41 0.17  0.37 0.46 0.42 -4.15 0.05 0.8 0.79 0.74 0.61 0.7 0.48 0.54 3.21 0.52 0.48 0.51 0.6 0.59 0.72 0.71 1.04 1.04 1.09 1.34 1.31 1.09 1.21 1.11 1.03 0.95 0.85 0.91 0.94 0.77 0.6 0.59 0.57 0.54 0.46 0.55 0.65 0.63 0.52 0.72 0.77 0.74 0.68 0.63 0.64 0.56 0.46 0.45 0.48 0.44 0.85 0.76 0.67 0.72 0.52   
      equity in earnings of marine affiliates
                                                                          41,000 22,000 105,000 98,000 66,000 88,000 87,000 466,000 534,000 1,395,000 707,000 -703,000   
      loss on debt retirement
                                                                                    -1,144,000    
      revenues: - sum
                                                                                 224,903,000       
      costs and expenses: - sum
                                                                                 186,259,000       
      other expense
                                                                                     -316,000   
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2015-03-31 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-03-31 2008-12-31 2007-12-31 2006-12-31 2006-03-31 2005-12-31 2005-03-31 2004-12-31 2003-12-31 
                                                                          
        assets
                                                                          
        current assets:
                                                                          
        cash and cash equivalents
      58,014,000  47,025,000 68,383,000 51,078,000  67,073,000 53,540,000 75,216,000  42,116,000 36,603,000 26,699,000  36,991,000 25,104,000 32,398,000  54,377,000 53,052,000 52,333,000  119,586,000 108,471,000 322,571,000 24,737,000 9,425,000 22,521,000 7,289,000 7,800,000 3,617,000 4,198,000 7,010,000 4,826,000 1,577,000   5,381,000 2,859,000 1,717,000 2,515,000 4,989,000 4,491,000    5,263,000  11,059,000     7,332,000 172,093,000 195,600,000  140,751,000   8,647,000 5,117,000 2,653,000  17,838,000 2,281,000 629,000 4,064,000 
        accounts receivable:
                                                                          
        trade – less allowance for doubtful accounts
      536,350,000  524,072,000 564,233,000 505,617,000  542,527,000 550,159,000 529,141,000  514,631,000 519,741,000 526,489,000  482,744,000 445,425,000 420,823,000  389,579,000 352,372,000 347,275,000  304,021,000 348,453,000 389,616,000  382,465,000 450,958,000 439,975,000  400,870,000 448,281,000 485,865,000 433,295,000 287,282,000   250,362,000 271,698,000 264,703,000 321,725,000 337,011,000 373,916,000    331,131,000       255,028,000 153,806,000   143,062,000           
        other
      66,963,000  95,895,000 62,221,000 48,003,000  47,965,000 47,666,000 55,949,000  53,936,000 40,011,000 109,539,000  133,278,000 127,181,000 125,757,000  150,811,000 165,478,000 171,749,000  257,656,000 228,409,000 253,688,000 104,175,000 99,736,000 99,568,000 122,180,000 104,239,000 111,221,000 116,673,000 110,640,000 77,913,000 94,994,000   76,728,000 88,477,000 88,381,000 90,035,000 92,582,000 98,496,000    46,489,000  43,074,000     12,009,000 18,181,000 21,612,000  10,882,000   12,976,000 7,713,000 20,850,000   6,741,000   
        inventories – net
      418,076,000  423,976,000 426,265,000 434,706,000  434,151,000 445,304,000 446,803,000  505,506,000 504,514,000 475,218,000  392,470,000 370,385,000 360,457,000  308,820,000 325,545,000 326,475,000  321,433,000 335,958,000 341,498,000  410,261,000 428,264,000 491,566,000  453,173,000 384,007,000 372,182,000 323,403,000 180,841,000   179,110,000 187,717,000 186,930,000 185,938,000 191,061,000 195,729,000    139,547,000       116,871,000               
        prepaid expenses and other current assets
      62,732,000  68,863,000 63,931,000 62,876,000  72,617,000 69,946,000 68,369,000  79,382,000 67,787,000 62,421,000  80,899,000 84,160,000 75,896,000  75,004,000 66,696,000 60,685,000  58,023,000 57,023,000 60,640,000 58,092,000 56,646,000 52,953,000 57,242,000 59,365,000 85,639,000 82,173,000 80,957,000 51,327,000 38,951,000   55,902,000 58,480,000 45,088,000 58,256,000 38,139,000 39,097,000    38,277,000  39,248,000     22,687,000 22,553,000 17,105,000  14,668,000   12,163,000 18,731,000 16,426,000  19,002,000 16,684,000 15,110,000 13,173,000 
        total current assets
      1,142,135,000  1,159,831,000 1,185,033,000 1,102,280,000  1,164,333,000 1,166,615,000 1,175,478,000  1,195,571,000 1,168,656,000 1,200,366,000  1,126,382,000 1,052,255,000 1,015,331,000  978,591,000 963,143,000 958,517,000  1,060,719,000 1,078,314,000 1,368,013,000 917,579,000 958,533,000 1,054,264,000 1,118,252,000 1,096,489,000 1,054,520,000 1,035,332,000 1,056,654,000 890,764,000 603,645,000   578,746,000 620,533,000 598,007,000 670,980,000 676,626,000 723,560,000    567,171,000  596,256,000     422,705,000 408,780,000 425,915,000  353,774,000   279,511,000 267,343,000 249,592,000   150,040,000   
        property and equipment
      6,521,037,000 4,098,058,000 6,360,383,000 6,327,529,000 6,310,311,000 4,022,966,000 6,045,965,000 5,990,523,000 5,880,403,000 3,861,105,000 5,710,443,000 5,580,411,000 5,532,952,000 3,633,462,000 5,434,740,000 5,416,559,000 5,391,988,000 3,678,515,000 5,385,478,000 5,593,651,000 5,585,574,000 3,917,070,000 5,629,361,000 5,611,184,000 5,366,596,000  5,311,754,000 5,304,058,000 5,265,021,000  5,056,335,000 5,007,375,000 4,860,841,000 4,583,442,000 4,359,359,000 2,915,997,000 2,921,374 4,304,269,000 4,259,895,000 4,108,140,000 4,004,022,000 3,942,527,000 3,853,292,000 2,452,075,000 2,393,776,000 2,367,048,000 3,332,462,000 2,345,428,000  1,963,851,000 1,847,088,000 1,822,173 1,764,168,000 2,016,032,000 1,932,650,000  1,117,694,000 1,811,434,000 1,094,687,000 1,033,760,000 990,932,000   667,846,000  1,003,801,000   
        accumulated depreciation
      -2,358,118,000  -2,238,318,000 -2,192,479,000 -2,161,012,000  -2,060,572,000 -2,015,776,000 -1,997,082,000  -1,928,319,000 -1,882,472,000 -1,867,442,000  -1,794,050,000 -1,763,907,000 -1,731,674,000  -1,680,231,000 -1,730,845,000 -1,704,301,000  -1,671,217,000 -1,635,159,000 -1,589,812,000 -1,546,980,000 -1,518,022,000 -1,507,640,000  1,472,022,000                   903,948,000       744,150,000     664,643,000 583,832,000 514,074,000  458,778,000  406,253,000 354,411,000 
        property and equipment – net
      4,162,919,000  4,122,065,000 4,135,050,000 4,149,299,000  3,985,393,000 3,974,747,000 3,883,321,000  3,782,124,000 3,697,939,000 3,665,510,000  3,640,690,000 3,652,652,000 3,660,314,000  3,705,247,000 3,862,806,000 3,881,273,000  3,958,144,000 3,976,025,000 3,776,784,000  3,793,732,000 3,796,418,000 3,792,440,000  3,561,500,000 3,549,066,000 3,443,868,000 3,096,110,000 2,889,007,000   2,918,915,000 2,917,250,000 2,783,513,000 2,754,361,000 2,731,659,000 2,683,032,000    2,383,963,000        1,176,746,000              
        operating lease right-of-use assets
      179,662,000 193,276,000 181,407,000 157,041,000 157,903,000 158,990,000 163,455,000 157,950,000 149,412,000 152,216,000 155,098,000 152,504,000 155,306,000 154,507,000 153,723,000 159,968,000 164,986,000 167,730,000 159,627,000 164,911,000 172,198,000 174,317,000 178,714,000 183,048,000 157,333,000 159,641,000 156,798,000 158,917,000 159,704,000                                        
        goodwill
      438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 438,748,000 657,800,000 657,800,000 657,800,000 657,800,000 657,832,000 704,098,000 953,826,000 953,826,000 953,826,000 953,826,000 953,826,000 960,006,000 961,745,000 935,755,000 919,276,000 598,131,000 598,131,000 598,131 587,703,000 587,703,000 586,718,000 588,241,000 591,405,000 591,405,000 591,405,000 591,405,000 591,362,000 599,001,000 595,234,000  486,153,000 483,010,000 483,468 478,923,000    228,873,000  228,873,000 230,774,000    165,244,000     
        other intangibles
      27,976,000 30,165,000 30,956,000 33,123,000 32,275,000 34,406,000 36,536,000 38,667,000 40,797,000 42,927,000 45,058,000 47,188,000 49,325,000 51,463,000 53,615,000 55,770,000 57,934,000 60,070,000 62,233,000 64,397,000 66,646,000 68,979,000 71,313,000 73,556,000 73,694,000 210,682,000 210,173,000 214,972,000  224,197,000 228,958,000                                      
        other assets
      167,763,000 166,755,000 130,552,000 130,970,000 134,096,000 125,383,000 82,258,000 89,171,000 88,081,000 89,464,000 66,281,000 69,544,000 65,493,000 62,814,000 43,140,000 45,763,000 45,479,000 48,001,000 45,436,000 54,758,000 51,652,000 55,348,000 54,430,000 48,236,000 57,655,000 58,234,000 54,823,000 54,493,000 56,774,000 54,785,000 49,348,000 49,159,000 50,208,000 294,265,000 134,573,000 133,576,000 134,817 138,463,000 143,329,000 140,748,000 152,357,000 154,813,000 153,897,000 162,995,000 165,548,000 167,719,000 174,174,000 171,637,000 143,869,000 120,575,000 122,802,000 121,759 126,866,000 95,364,000 21,429,000 18,652,000 20,312,000 20,691,000 21,296,000 23,774,000 22,825,000 25,821,000 29,225,000 26,996,000 24,384,000 17,377,000 17,968,000 20,782,000 
        total assets
      6,119,203,000  6,063,559,000 6,079,965,000 6,014,601,000  5,870,723,000 5,865,898,000 5,775,837,000  5,682,880,000 5,574,579,000 5,574,748,000  5,456,298,000 5,405,156,000 5,382,792,000  5,389,882,000 5,767,815,000 5,788,086,000  5,981,120,000 6,017,011,000 6,137,577,000 6,079,097,000 6,127,885,000 6,232,890,000 6,300,692,000 5,871,594,000 5,854,332,000 5,829,276,000 5,714,500,000 5,200,415,000 4,225,356,000   4,223,827,000 4,268,815,000 4,108,986,000 4,165,939,000 4,154,503,000 4,151,894,000    3,724,309,000  3,653,128,000     2,121,721,000 1,844,092,000 1,794,937,000  1,705,629,000   1,526,098,000        
        liabilities and stockholders’ equity
                                                                          
        current liabilities:
                                                                          
        bank notes payable
      6,092,000  7,283,000 6,433,000 7,337,000  8,174,000 8,970,000 8,643,000  9,608,000 7,447,000 3,983,000  3,599,000 4,206,000 3,097,000  1,983,000 1,417,000 434,000  155,000 7,000 17,000 16,000 15,000 11,000 17,000 19,000 508,000 17,000 27,000 899,000                                   
        accounts payable
      263,110,000  222,688,000 250,055,000 272,163,000  248,899,000 266,820,000 249,644,000  258,126,000 279,519,000 278,467,000  241,623,000 234,640,000 218,907,000  181,313,000 188,724,000 175,890,000  156,950,000 177,290,000 227,020,000 206,778,000 212,279,000 212,147,000 275,570,000 278,057,000 250,681,000 263,470,000 251,916,000 214,109,000 142,371,000   117,942,000 134,480,000 125,814,000 158,154,000 162,426,000 166,629,000    165,502,000  156,763,000     123,778,000 81,917,000 71,354,000  64,372,000   78,020,000 100,908,000 88,213,000  68,895,000 52,668,000 41,916,000 41,577,000 
        accrued liabilities
      200,854,000  219,581,000 203,523,000 190,412,000  217,208,000 211,276,000 194,819,000  199,124,000 205,254,000 173,992,000  209,724,000 198,191,000 188,302,000  228,375,000 231,603,000 198,487,000  228,764,000 230,296,000 205,667,000  225,402,000 225,232,000 204,724,000  237,129,000 228,791,000 196,063,000 203,826,000 170,896,000   164,277,000 173,039,000 164,025,000 191,097,000 180,946,000 181,019,000    121,973,000       71,633,000 61,081,000   60,856,000        49,480,000   
        current portion of operating lease liabilities
      42,221,000  44,322,000 37,985,000 35,417,000  33,827,000 33,399,000 32,601,000  32,170,000 33,134,000 32,885,000  33,495,000 34,667,000 34,454,000  32,813,000 31,963,000 32,722,000  32,545,000 33,761,000 25,903,000 27,324,000 29,001,000 29,422,000 28,586,000                                        
        deferred revenues
      205,187,000  189,309,000 180,683,000 171,327,000  168,222,000 153,964,000 153,435,000  134,577,000 130,943,000 124,355,000  82,120,000 69,668,000 68,982,000  67,214,000 44,018,000 45,421,000  31,192,000 36,648,000 37,027,000 42,982,000 49,098,000 58,909,000 72,386,000 80,123,000 75,843,000 61,165,000 81,216,000 40,421,000 28,337,000   35,220,000 33,757,000 34,574,000 39,422,000 43,311,000 47,540,000    31,506,000  16,857,000     37,175,000 9,558,000 11,633,000  10,289,000   7,006,000 6,771,000 5,012,000  6,589,000 8,071,000 8,284,000 5,444,000 
        total current liabilities
      717,464,000  683,770,000 679,457,000 698,583,000  697,978,000 684,623,000 650,394,000  635,852,000 656,297,000 614,788,000  570,561,000 541,372,000 513,835,000  512,197,000 498,222,000 453,443,000  450,065,000 478,696,000 496,332,000 514,115,000 516,991,000 526,033,000 582,724,000 607,782,000 567,926,000 556,318,000 531,158,000 462,190,000 341,994,000   317,565,000 344,449,000 327,582,000 390,342,000 387,789,000 410,082,000    401,088,000  355,020,000     239,143,000 157,642,000 160,259,000  139,408,000   173,066,000 191,420,000 166,867,000   119,450,000   
        long-term debt, net – less current portion
      977,292,000  1,041,632,000 1,111,332,000 1,091,032,000  970,419,000 1,039,120,000 1,051,822,000  1,058,248,000 990,954,000 1,075,658,000  1,114,860,000 1,131,849,000 1,151,638,000  1,206,193,000 1,274,262,000 1,348,904,000  1,578,189,000 1,642,832,000 1,702,476,000  1,434,417,000 1,594,695,000 1,667,457,000                                        
        deferred income taxes
      835,396,000 826,373,000 805,006,000 747,060,000 741,417,000 739,472,000 735,290,000 720,679,000 705,834,000 696,557,000 672,711,000 656,528,000 638,438,000 625,884,000 604,596,000 590,876,000 580,014,000 574,152,000 552,913,000 612,682,000 606,561,000 606,844,000 591,346,000 568,816,000 582,150,000 588,204,000 585,507,000 570,954,000 555,414,000 542,785,000 544,882,000 531,284,000 517,421,000 756,268,000 741,821,000 722,963,000 719,057 11,263,000 11,302,000 11,188,000 12,511,000 12,844,000 11,831,000 559,009,000 551,956,000 485,018,000 6,464,000 446,497,000 12,296,000 357,351,000 311,948,000 292,355 280,260,000 8,778,000 6,308,000 6,418,000 224,232,000 7,406,000 202,445,000 156,706,000 9,997,000 6,529,000 5,077,000 127,900,000 3,770,000 2,418,000 2,167,000 2,619,000 
        operating lease liabilities – less current portion
      159,422,000  159,261,000 142,105,000 146,250,000  148,839,000 144,250,000 136,980,000  142,237,000 142,470,000 146,445,000  144,201,000 150,355,000 156,271,000  152,615,000 153,457,000 161,133,000  167,884,000 171,629,000 138,884,000                                            
        other long-term liabilities
      12,954,000 10,577,000 10,649,000 10,121,000 9,565,000 9,587,000 14,587,000 14,548,000 14,066,000 15,830,000 15,750,000 15,521,000 14,279,000 23,209,000 46,717,000 60,960,000 69,169,000 71,252,000 119,740,000 123,863,000 129,301,000 131,703,000 115,269,000 103,054,000 93,208,000 95,978,000 81,455,000 82,066,000 90,497,000 94,557,000 108,953,000 111,470,000 100,786,000 74,801,000 72,618,000 92,568,000 90,435 78,994,000 77,483,000 68,193,000 91,151,000 88,506,000 88,084,000 14,946,000 14,707,000 77,858,000 75,936,000 86,262,000 94,848,000 96,417,000 87,553,000 92,098 70,830,000 61,111,000 42,646,000 43,758,000 56,265,000 53,275,000 44,436,000 68,688,000 67,845,000 39,334,000 33,778,000  18,310,000 16,029,000 21,444,000 19,854,000 
        total long-term liabilities
      1,985,064,000  2,016,548,000 2,010,618,000 1,988,264,000  1,869,135,000 1,918,597,000 1,908,702,000  1,888,946,000 1,805,473,000 1,874,820,000  1,910,374,000 1,934,040,000 1,957,092,000  2,031,461,000 2,164,264,000 2,245,899,000  2,452,688,000 2,486,331,000 2,516,718,000 2,193,390,000 2,236,396,000 2,384,685,000 2,452,560,000 2,047,511,000 2,053,258,000 2,085,267,000 2,041,474,000 1,862,097,000 1,405,974,000   1,519,513,000 1,573,687,000 1,464,744,000 1,521,919,000 1,510,871,000 1,511,891,000    1,487,061,000  1,591,054,000     639,737,000 488,736,000 475,539,000  453,607,000   462,979,000        
        contingencies and commitments
                                                                          
        equity:
                                                                          
        kirby stockholders’ equity:
                                                                          
        common stock
      6,547,000  6,547,000 6,547,000 6,547,000  6,547,000 6,547,000 6,547,000  6,547,000 6,547,000 6,547,000  6,547,000 6,547,000 6,547,000  6,547,000 6,547,000 6,547,000  6,547,000 6,547,000 6,547,000 6,547,000 6,547,000 6,547,000 6,547,000 6,547,000 6,547,000 6,547,000 6,547,000 6,547,000 5,978,000   5,978,000 5,978,000 5,978,000 5,978,000 5,978,000 5,978,000    5,978,000  5,978,000     5,734,000  5,734,000  5,734,000   5,734,000 5,734,000 5,734,000  3,091,000 3,091,000 3,091,000 3,091,000 
        additional paid-in capital
      870,284,000  870,520,000 867,143,000 865,007,000  865,973,000 862,258,000 859,150,000  861,928,000 857,965,000 856,680,000  857,674,000 854,781,000 853,610,000  851,587,000 848,081,000 846,259,000  842,301,000 838,874,000 837,879,000 835,899,000 832,892,000 829,460,000 827,497,000 823,347,000 820,805,000 817,609,000 810,381,000 799,714,000 429,797,000   430,479,000 427,173,000 428,836,000 432,132,000 428,835,000 426,648,000    401,826,000  397,785,000     238,238,000 236,104,000 237,014,000  232,864,000   225,718,000 211,983,000 208,032,000  204,453,000 189,069,000 185,123,000 178,720,000 
        accumulated other comprehensive income – net
      84,121,000  63,988,000 65,612,000 69,633,000  34,618,000 35,124,000 34,611,000  19,078,000 18,996,000 17,017,000  -13,455,000 -21,957,000 -25,477,000  -54,663,000 -57,683,000 -61,204,000  -45,635,000 -41,117,000 -38,991,000  -27,413,000 -26,967,000 -32,971,000  -39,544,000 -39,922,000 -39,480,000 -35,778,000 -36,121,000   -46,451,000 -47,186,000 -44,037,000 -56,316,000 -57,439,000 -60,026,000    -58,237,000       -31,917,000 -32,426,000   -34,812,000           
        retained earnings
      3,414,138,000  3,241,131,000 3,148,635,000 3,054,358,000  2,935,555,000 2,845,587,000 2,761,733,000  2,629,759,000 2,566,795,000 2,509,428,000  2,431,421,000 2,392,330,000 2,363,873,000  2,335,478,000 2,600,208,000 2,590,018,000  2,571,189,000 2,543,700,000 2,617,471,000 2,865,939,000 2,863,162,000 2,815,175,000 2,767,888,000 2,723,592,000 2,748,029,000 2,706,213,000 2,677,611,000 2,415,618,000 2,387,011,000   2,309,881,000 2,277,871,000 2,238,929,000 2,150,142,000 2,093,299,000 2,035,224,000    1,558,750,000  1,439,079,000     1,120,737,000 1,079,045,000 1,046,615,000  984,308,000   804,425,000 647,692,000 524,351,000  428,900,000 373,398,000 360,119,000 310,575,000 
        treasury stock
      -960,825,000  -821,007,000 -699,867,000 -669,510,000  -540,367,000 -488,059,000 -446,393,000  -360,420,000 -339,659,000 -306,746,000  -309,130,000 -304,314,000 -289,098,000  -295,203,000 -295,463,000 -296,353,000  -299,139,000 -299,124,000 -301,424,000 -301,963,000 -303,667,000 -305,061,000 -306,625,000 -306,788,000 -305,926,000 -306,097,000 -316,564,000 -313,423,000 -312,771,000   -320,364,000 -320,301,000 -323,308,000 -289,165,000 -225,636,000 -188,704,000    -83,596,000  -86,747,000     -97,179,000  -99,622,000  -78,585,000   -90,777,000        
        total kirby stockholders’ equity
      3,414,265,000  3,361,179,000 3,388,070,000 3,326,035,000  3,302,326,000 3,261,457,000 3,215,648,000  3,156,892,000 3,110,644,000 3,082,926,000  2,973,057,000 2,927,387,000 2,909,455,000  2,843,746,000 3,101,690,000 3,085,267,000  3,075,263,000 3,048,880,000 3,121,482,000 3,368,623,000 3,371,521,000 3,319,154,000 3,262,336,000 3,213,187,000 3,229,911,000 3,184,350,000 3,138,495,000 2,872,678,000 2,473,894,000   2,379,523,000 2,343,535,000 2,306,398,000 2,242,771,000 2,245,037,000 2,219,120,000    1,824,721,000  1,694,968,000     1,235,613,000 1,190,623,000 1,156,099,000  1,109,509,000           
        noncontrolling interests
      2,410,000  2,062,000 1,820,000 1,719,000  1,284,000 1,221,000 1,093,000  1,190,000 2,165,000 2,214,000  2,306,000 2,357,000 2,410,000  2,478,000 3,639,000 3,477,000  3,104,000 3,104,000 3,045,000 2,969,000 2,977,000 3,018,000 3,072,000 3,114,000 3,237,000 3,341,000 3,373,000 3,450,000 3,494,000   7,226,000 7,144,000 10,262,000 10,907,000 10,806,000 10,801,000    11,439,000  12,086,000     7,228,000 7,091,000 3,040,000  3,105,000           
        total equity
      3,416,675,000 3,382,793,000 3,363,241,000 3,389,890,000 3,327,754,000 3,353,248,000 3,303,610,000 3,262,678,000 3,216,741,000 3,186,677,000 3,158,082,000 3,112,809,000 3,085,140,000 3,045,168,000 2,975,363,000 2,929,744,000 2,911,865,000 2,888,782,000 2,846,224,000 3,105,329,000 3,088,744,000 3,087,553,000 3,078,367,000 3,051,984,000 3,124,527,000 3,371,592,000 3,374,498,000 3,322,172,000 3,265,408,000 3,216,301,000 3,233,148,000 3,187,691,000 3,141,868,000 2,876,128,000 2,477,388,000 2,433,673,000 2,412,867 2,386,749,000 2,350,679,000 2,316,660,000 2,253,678,000 2,255,843,000 2,229,921,000 2,174,114,000 2,090,911,000 1,912,255,000 1,836,160,000 1,769,440,000 1,707,054,000 1,620,711,000 1,510,167,000 1,454,158 1,417,757,000 1,242,841,000 1,197,714,000 1,159,139,000 1,125,731,000 1,112,614,000           
        total liabilities and equity
      6,119,203,000  6,063,559,000 6,079,965,000 6,014,601,000  5,870,723,000 5,865,898,000 5,775,837,000  5,682,880,000 5,574,579,000 5,574,748,000  5,456,298,000 5,405,156,000 5,382,792,000  5,389,882,000 5,767,815,000 5,788,086,000  5,981,120,000 6,017,011,000 6,137,577,000 6,079,097,000 6,127,885,000 6,232,890,000 6,300,692,000 5,871,594,000 5,854,332,000 5,829,276,000 5,714,500,000 5,200,415,000 4,225,356,000   4,223,827,000 4,268,815,000 4,108,986,000 4,165,939,000 4,154,503,000 4,151,894,000    3,724,309,000  3,653,128,000     2,121,721,000 1,844,092,000 1,794,937,000  1,705,629,000           
        assets:
                                                                          
        current assets
       1,077,855,000    1,068,559,000    1,135,161,000    1,211,759,000    1,003,865,000    1,047,971,000         1,054,520,000   890,764,000  609,588,000 646,555       661,405,000 654,975,000 535,183,000  585,786,000  555,033,000 527,969,000 529,329 496,549,000    391,561,000  336,752,000 237,729,000    205,997,000     
        investment in affiliates
       3,188,000    2,900,000    2,576,000    2,171,000    2,134,000    2,689,000    2,025,000    2,495,000 2,182,000   1,851,000   2,622            1,808,000   3,682    3,336,000             
        liabilities and stockholders’ equity:
                                                                          
        current liabilities
       706,524,000    734,753,000    675,795,000    642,197,000    543,772,000    466,032,000         567,926,000   462,190,000  333,536,000 358,338       470,511,000 440,130,000 325,251,000  363,926,000  327,663,000 369,248,000 358,800 333,348,000    152,088,000  151,664,000 150,600,000    147,880,000     
        long-term debt, net — less current portion
       911,924,000    866,722,000    1,008,527,000    1,076,326,000    1,161,433,000    1,468,546,000    1,369,751,000                                           
        operating lease liabilities — less current portion
       169,854,000    148,170,000    138,811,000    142,140,000    159,672,000    163,496,000    139,457,000                                           
        income taxes payable
        587,000 778,000 21,927,000  21,648,000 10,194,000 11,252,000  2,247,000  1,106,000    93,000  499,000 497,000 489,000  459,000 694,000 698,000 665,000 1,196,000 312,000 1,441,000 2,794,000 3,765,000 2,875,000 1,936,000 1,434,000 390,000   126,000 3,173,000 3,169,000 1,669,000 1,106,000 14,894,000    4,107,000  2,369,000     6,486,000 4,966,000 3,065,000  3,858,000   4,755,000 9,182,000 3,016,000  2,669,000 7,927,000 986,000 897,000 
        trade — less allowance for doubtful accounts of 8,372
                               379,174,000                                           
        inventories — at lower of average cost or net realizable value
                               351,401,000                                           
        property and equipment:
                                                                          
        marine transportation equipment
                               4,770,213,000    4,477,718,000                   3,029,219,000       1,748,488,000     1,550,547,000 1,391,613,000 1,190,163,000      
        land, buildings and equipment
                               553,877,000    534,106,000                   189,894,000       113,823,000     105,028,000 98,317,000 90,517,000  73,562,000  71,119,000 66,545,000 
        property and equipment — net
                               3,777,110,000    3,539,802,000                   2,315,165,000       1,118,161,000             
        accrued liabilities:
                                                                          
        interest
                               12,700,000    13,171,000                   1,628,000       1,006,000     1,008,000 1,200,000 1,342,000      
        insurance premiums and claims
                               108,405,000    109,634,000                   44,589,000       24,416,000     25,796,000 21,360,000 20,775,000      
        employee compensation
                               42,875,000    53,089,000                   39,561,000       30,582,000     36,957,000 34,439,000 26,565,000      
        taxes — other than on income
                               39,286,000    38,680,000                   10,760,000       7,550,000     7,300,000 6,789,000 6,167,000      
        accumulated other comprehensive income — net
                               -37,799,000    -33,511,000                   -61,127,000       -33,642,000     -55,047,000 -22,522,000 -23,087,000  -2,028,000    
        operating lease liabilities
                                135,017,000 136,970,000 139,192,000                                        
        less accumulated depreciation
                                  -1,472,581,000  -1,494,835,000 -1,458,309,000 -1,416,973,000 -1,487,332,000 -1,470,352,000   -1,385,354,000 -1,342,645,000 -1,324,627,000 -1,249,661,000 -1,210,868,000 -1,170,260,000    -948,499,000       -781,707,000 -755,904,000   -709,143,000        420,531,000   
        other intangibles – net
                                  219,696,000  228,958,000 233,974,000 228,015,000                                    
        trade — less allowance for doubtful accounts of 10,024
                                   417,644,000                                       
        inventories — at lower of average cost or market
                                   507,441,000                                       
        long-term debt — less current portion
                                   1,410,169,000                   1,070,110,000       200,006,000     246,064,000 296,015,000 309,518,000  200,032,000 203,835,000 217,436,000 255,040,000 
        long-term debt – less current portion
                                    1,399,423,000 1,442,513,000 1,423,267,000 1,031,028,000 591,535,000 674,552,000  726,004,000 798,687,000 712,163,000 810,448,000 808,300,000 818,900,000 649,300,000 708,000,000 860,930,000 943,240,000 1,031,960,000  723,470,000 701,953,000  764,311,000 319,703,000 200,004,000  200,124,000 200,157,000 200,193,000 225,049,000         
        revenues:
                                                                          
        marine transportation
                                    382,040,000   318,810,000                                   
        distribution and services
                                    322,805,000   222,464,000                                   
        total revenues
                                    704,845,000   541,274,000                                   
        costs and expenses:
                                                                          
        costs of sales and operating expenses
                                    498,421,000   378,340,000                                   
        selling, general and administrative
                                    70,032,000   51,689,000                                   
        taxes, other than on income
                                    10,523,000   6,518,000                                   
        depreciation and amortization
                                    57,930,000   51,206,000                                   
        gain on disposition of assets
                                    -18,000   159,000                                   
        total costs and expenses
                                    636,888,000   487,912,000                                   
        operating income
                                    67,957,000   53,362,000                                   
        other income
                                    1,454,000   -113,000                                   
        interest expense
                                    -12,345,000   -5,388,000                                   
        earnings before taxes on income
                                    57,066,000   47,861,000                                   
        benefit from taxes on income
                                    -15,116,000   -19,072,000                                   
        net earnings
                                    41,950,000   28,789,000                                   
        less: net earnings attributable to noncontrolling interests
                                    -134,000   -182,000                                   
        net earnings attributable to kirby
                                    41,816,000   28,607,000                                   
        net earnings per share attributable to kirby common stockholders:
                                                                          
        basic
                                    700   520                                   
        diluted
                                    700   520                                   
        other comprehensive income, net of taxes:
                                                                          
        pension and postretirement benefits
                                    438,000   507,000                                   
        foreign currency translation adjustments
                                    -60,000   -164,000                                   
        reclassification to retained earnings of stranded tax effects from tax reform
                                                                          
        total other comprehensive income, net of taxes
                                    378,000   343,000                                   
        total comprehensive income, net of taxes
                                    42,328,000   29,132,000                                   
        net earnings attributable to noncontrolling interests
                                    -134,000   -182,000                                   
        comprehensive income attributable to kirby
                                    42,194,000   28,950,000                                   
        cash flows from operating activities:
                                                                          
        adjustments to reconcile net earnings to net cash from operations:
                                                                          
        benefit from deferred income taxes
                                    36,838,000   32,783,000                                   
        amortization of unearned share-based compensation
                                    16,649,000   8,991,000                                   
        amortization of major maintenance costs
                                    15,600,000   15,232,000                                   
        amortization of debt issuance costs
                                    898,000   786,000                                   
        decrease in cash flows resulting from changes in operating assets and liabilities
                                    -66,707,000                                      
        net cash from operating activities
                                    272,304,000   259,455,000                                   
        cash flows from investing activities:
                                                                          
        capital expenditures
                                    -231,752,000   -133,437,000                                   
        acquisitions of businesses and marine equipment, net of cash acquired
                                    -499,227,000   -451,219,000                                   
        proceeds from disposition of assets
                                    27,806,000   29,743,000                                   
        net cash from investing activities
                                    -703,173,000   -554,913,000                                   
        cash flows from financing activities:
                                                                          
        borrowings (payments) on bank credit facilities
                                    -88,392,000   297,181,000                                   
        borrowings (payments) on long-term debt
                                    499,295,000                                      
        payments of debt issue costs
                                    -4,276,000                                      
        proceeds from exercise of stock options
                                    13,264,000   2,076,000                                   
        payments related to tax withholding for share-based compensation
                                    -4,821,000   -2,899,000                                   
        net cash from financing activities
                                    414,384,000   294,650,000                                   
        decrease in cash and cash equivalents
                                    -16,485,000   -808,000                                   
        cash and cash equivalents, beginning of year
                                    20,102,000   5,634,000                                   
        cash and cash equivalents, end of period
                                    3,617,000   4,826,000                                   
        supplemental disclosures of cash flow information:
                                                                          
        cash paid during the period:
                                                                          
        interest paid
                                    37,175,000   18,390,000                                   
        income taxes
                                    495,000                                      
        capital expenditures included in accounts payable
                                    -5,554,000   8,917,000                                   
        non-cash investing activity:
                                                                          
        stock issued in acquisition
                                       366,554,000                                   
        cash acquired in acquisition
                                    2,313,000   98,000                                   
        debt assumed in acquisition
                                       13,724,000                                   
        basis for preparation of the condensed financial statements
                                                                          
        accounting standards adoptions
                                                                          
        statements of earnings:
                                                                          
        distribution and services revenues
                                    322,805,000   222,464,000                                   
        statements of comprehensive income:
                                                                          
        statements of cash flows:
                                                                          
        balance sheets:
                                                                          
        trade receivables
                                    400,870,000                                      
        revenues
                                                                          
        marine transportation segment:
                                                                          
        inland transportation
                                    288,573,000                                      
        coastal transportation
                                    93,467,000                                      
        distribution and services segment:
                                                                          
        oil and gas
                                    201,475,000                                      
        commercial and industrial
                                    121,330,000                                      
        acquisitions
                                                                          
        cash
                                    2,313,000   98,000                                   
        accounts receivable
                                    27,527,000   97,891,000                                   
        liabilities:
                                                                          
        total liabilities
                                    119,357,000   139,061,000                                   
        net assets acquired
                                    421,922,000   744,521,000                                   
        inventories
                                       150,000,000                                   
        finished goods
                                    336,703,000   280,393,000                                   
        work in process
                                    116,470,000   43,010,000                                   
        fair value measurements
                                                                          
        long-term debt
                                       10,634,000                                   
        stock award plans
                                                                          
        compensation cost
                                    3,098,000   3,067,000                                   
        income tax benefit
                                    709,000   1,234,000                                   
        outstanding at december 31, 2017
                                    654,655,000                                      
        granted
                                    115,797,000   123,051,000                                   
        exercised
                                    -283,886,000   -21,135,000                                   
        forfeited
                                    -21,864,000   -17,022,000                                   
        outstanding at september 30, 2018
                                    464,702,000                                      
        range of exercise prices
                                                                          
        51.23
                                                                          
        64.65 - 68.50
                                                                          
        70.65 - 75.50
                                                                          
        93.64 - 101.46
                                                                          
        51.23 - 101.46
                                                                          
        nonvested balance at december 31, 2017
                                    364,121,000                                      
        vested
                                    -144,240,000   -105,430,000                                   
        nonvested balance at september 30, 2018
                                    215,932,000                                      
        29.60
                                                                          
        41.24 – 56.45
                                                                          
        61.89 – 62.48
                                                                          
        70.65 – 99.52
                                                                          
        29.60 – 99.52
                                                                          
        dividend yield
                                                                          
        average risk-free interest rate
                                    2,700   2,000                                   
        stock price volatility
                                    27,000   27,000                                   
        estimated option term
                                                                          
        other comprehensive income
                                                                          
        amortization of net actuarial loss
                                    580,000   822,000                                   
        foreign currency translation
                                    -60,000   -164,000                                   
        total
                                    520,000   658,000                                   
        actuarial gains
                                    -609,000   22,014,000                                   
        adoption of asu 2018-02 – reclassification to retained earnings
                                                                          
        segment data
                                                                          
        segment profit:
                                                                          
        total assets:
                                                                          
        general corporate expenses
                                    -4,492,000   -4,495,000                                   
        general corporate assets
                                    59,229,000   49,092,000                                   
        taxes on income
                                                                          
        earnings before taxes on income:
                                                                          
        united states
                                    57,980,000                                      
        foreign
                                    -914,000                                      
        benefit from taxes on income:
                                                                          
        federal:
                                                                          
        current
                                       3,617,000                                   
        deferred
                                    13,457,000   14,132,000                                   
        state and local:
                                                                          
        foreign - current
                                    100,000                                      
        earnings per share
                                                                          
        undistributed earnings allocated to restricted shares
                                    -166,000   -213,000                                   
        income available to kirby common stockholders - basic
                                    41,650,000   28,394,000                                   
        undistributed earnings reallocated to restricted shares
                                    -165,000   -213,000                                   
        income available to kirby common stockholders - diluted
                                    41,651,000   28,394,000                                   
        shares outstanding:
                                                                          
        weighted-average common stock issued and outstanding
                                    59,875,000   55,177,000                                   
        weighted-average unvested restricted stock
                                    -237,000   -412,000                                   
        weighted-average common stock outstanding - basic
                                    59,638,000   54,765,000                                   
        dilutive effect of stock options and restricted stock units
                                    146,000                                      
        weighted-average common stock outstanding - diluted
                                    59,784,000   54,803,000                                   
        retirement plans
                                                                          
        components of net periodic benefit cost:
                                    2,018,000                                      
        service cost
                                    1,722,000   1,742,000                                   
        interest cost
                                    3,939,000   3,320,000                                   
        expected return on plan assets
                                    -5,696,000   -4,595,000                                   
        amortization of actuarial loss
                                    723,000   981,000                                   
        net periodic benefit cost
                                    688,000   1,448,000                                   
        amortization of actuarial gain
                                    -149,000   -166,000                                   
        contingencies
                                                                          
        item 2.
                                                                          
        weighted-average number of common stock - diluted
                                    59,784,000   54,803,000                                   
        marine transportation revenues
                                    382,040,000   318,810,000                                   
        operating margins
                                    12,700   11,300                                   
        markets serviced
                                    2,018,000   2,017,000                                   
        petrochemicals
                                    57,000   56,000                                   
        black oil
                                    22,000   22,000                                   
        refined petroleum products
                                    18,000   18,000                                   
        agricultural chemicals
                                    3,000   4,000                                   
        item 3.
                                                                          
        item 4.
                                                                          
        item 1.
                                                                          
        item 1a.
                                                                          
        item 6.
                                                                          
        31.1
                                                                          
        31.2
                                                                          
        32
                                                                          
        101.ins*
                                                                          
        101.sch*
                                                                          
        101.cal*
                                                                          
        101.def*
                                                                          
        101.lab*
                                                                          
        101.pre*
                                                                          
        *
                                                                          
        kirby corporation
                                                                          
        by:
                                                                          
        current portion of long-term debt
                                       1,501,000             78,000,000  65,000,000     71,000 120,000 128,000  33,000   1,243,000 1,368,000 844,000  4,000 1,304,000 1,304,000 225,000 
        increase in cash flows resulting from changes in operating assets and liabilities
                                       -28,592,000                                   
        payments on long-term debt
                                       -1,065,000                                   
        purchase of treasury stock
                                                                          
        acquisition of noncontrolling interests
                                       -7,000                                   
        income taxes paid
                                       19,388,000                                   
        fair value of property transferred in acquisition
                                                                          
        cash consideration paid
                                       377,967,000                                   
        stock consideration through issuance of company common stock
                                       366,554,000                                   
        fair value of consideration transferred
                                       744,521,000                                   
        outstanding at december 31, 2016
                                       601,121,000                                   
        outstanding at september 30, 2017
                                       686,015,000                                   
        46.74 - 51.23
                                                                          
        64.65 - 74.99
                                                                          
        93.64 - 96.85
                                                                          
        101.46 - 104.37
                                                                          
        46.74 - 104.37
                                                                          
        nonvested balance at december 31, 2016
                                       377,655,000                                   
        nonvested balance at september 30, 2017
                                       378,186,000                                   
        actuarial losses
                                                                          
        earnings before taxes on income – united states
                                       47,861,000                                   
        state and local
                                       1,323,000                                   
        dilutive effect of stock options
                                       38,000                                   
        subsequent event
                                                                          
        land-based
                                       80,000                                   
        marine
                                       13,000                                   
        power generation
                                       7,000                                   
        10.1†*
                                       2,005,000                                   
        †
                                                                          
        dated: november 8, 2017
                                                                          
        long-term debt-less current portion
                                          722,802               763,000                 
        trade — less allowance for doubtful accounts of 4,720
                                                      313,182,000                    
        inventories — net, at lower of average cost or market
                                                      177,397,000                    
        goodwill — net
                                                      596,030,000       228,873,000          160,641,000   
        property and equipment - net
                                                           1,234,325,000    1,102,291,000           
        goodwill – net
                                                           369,327,000 237,137,000   228,873,000           
        inventory – finished goods
                                                            35,839,000   37,005,000           
        120,000,000 shares, issued 57,337,000 shares
                                                            5,734,000              
        3,780,000 at december 31, 2010
                                                            -97,834,000              
        trade — less allowance for doubtful accounts of 4,000
                                                             146,359,000             
        inventory — finished goods, at lower of average cost or market
                                                             38,821,000     48,518,000 53,377,000 41,777,000      
        preferred stock, 1.00 par value per share. authorized 20,000,000 shares
                                                                          
        equity
                                                                1,082,870,000 924,994,000         
        trade — less allowance for doubtful accounts of 8,878
                                                                  187,210,000        
        investment in marine affiliates
                                                                  2,056,000 1,921,000 2,264,000 1,962,000 11,866,000 10,294,000 12,205,000 9,162,000 
        goodwill — less accumulated amortization of 15,566 in 2008 and 2007
                                                                  230,774,000        
        minority interests
                                                                  3,502,000 2,977,000 3,018,000  3,088,000 2,959,000 2,840,000 2,933,000 
        stockholders’ equity:
                                                                          
        total stockholders’ equity
                                                                  890,053,000        
        total liabilities and stockholders’ equity
                                                                  1,526,098,000        
        trade — less allowance for doubtful accounts of 2,016
                                                                   175,876,000       
        goodwill — less accumulated amortization of 15,566 in 2007 and 2006
                                                                   229,292,000       
        less cost of 3,806,000 shares in treasury
                                                                   73,057,000       
        trade — less allowance for doubtful accounts of 1,978
                                                                    162,809,000      
        goodwill — less accumulated amortization of 15,566 in 2006 and 2005
                                                                    223,432,000      
        unearned compensation
                                                                      -5,060,000    
        less cost of 4,354,000 shares in treasury
                                                                    83,035,000      
        long-term debt - less current portion
                                                                     200,506,000     
        minority interest and other long-term liabilities
                                                                     18,365,000     
        stockholders’ equity
                                                                     573,394,000     
        goodwill — less accumulated amortization of 15,566 in 2005 and 2004
                                                                      160,641,000    
        less cost of 4,936,000 shares in treasury
                                                                      91,814,000    
        trade — less allowance for doubtful accounts
                                                                       106,189,000   
        inventory — finished goods
                                                                       15,727,000   
        accumulated other comprehensive income
                                                                       -2,960,000 -5,672,000 -5,950,000 
        deferred compensation
                                                                       -6,179,000 -2,255,000 -1,003,000 
        less cost of 5,847,000 shares in treasury
                                                                       101,747,000   
        goodwill — less accumulated amortization of 15,566,000 in 2004 and 2003
                                                                        160,641,000  
        less cost of 6,051,000 shares in treasury
                                                                        105,171,000  
        goodwill — less accumulated amortization of 15,566,000 in 2003 and 2002
                                                                         156,726,000 
        less cost of 6,590,000 shares in treasury
                                                                         113,301,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 
                                                                                         
          cash flows from operating activities:
                                                                                         
          net earnings
        81,326,000 92,029,000 92,738,000 94,378,000 76,270,000 42,968,000 90,031,000 83,982,000 69,915,000 61,962,000 63,004,000 57,318,000 40,621,000 37,325,000 39,244,000 28,606,000 17,586,000     22,415,000 27,693,000 -73,510,000 -248,190,000 2,972,000 48,150,000 47,440,000 44,457,000 37,128,000 -19,509,000 28,793,000 32,666,000 183,830,000 -24,828,000 25,972,000 27,645,000 32,858,000 32,353,000 39,109,000 38,484,000 57,111,000 58,376,000 61,411,000 77,213,000 75,911,000 63,011,000 69,696,000 63,792,000 57,552,000 53,731,000 48,435,000 51,879,000 56,769,000 53,594,000 42,229,000 32,900,000 31,923,000 30,905,000 29,643,000 24,911,000 29,641,000 35,448,000   38,409,000 41,778,000 40,334,000 36,647,000 34,352,000 34,430,000 30,137,000 24,422,000 23,938,000 25,600,000 23,333,000 22,580,000 19,770,000 17,285,000 18,447,000 13,279,000 
          adjustments to reconcile net earnings to net cash from operations:
                                                                                         
          depreciation and amortization
        68,238,000 67,853,000 66,873,000 65,670,000 63,730,000 62,545,000 60,653,000 59,482,000 57,642,000 54,905,000 53,445,000 51,697,000 51,109,000 50,945,000 50,419,000 50,115,000 49,964,000 50,234,000 53,462,000 55,132,000 54,890,000 54,854,000 54,779,000 54,502,000 55,786,000 54,861,000 54,455,000 55,093,000 55,223,000 167,042,000 -51,780,000 55,492,000 54,218,000 93,941,000 -45,257,000 48,293,000 48,170,000 52,490,000 50,142,000 49,661,000 48,624,000 49,759,000 46,825,000 45,766,000 42,433,000 41,407,000 41,036,000 41,640,000 40,271,000 40,996,000 35,729,000 35,197,000 36,474,000 35,796,000 36,827,000 28,213,000 25,193,000 24,937,000 24,135,000 22,854,000 23,370,000 24,244,000 24,929,000 22,519,000 22,276,000 24,067,000 22,420,000 22,385,000 22,327,000 20,642,000 20,407,000 20,280,000 19,587,000 17,102,000 16,689,000 15,515,000 15,090,000  13,725,000 13,964,000 14,981,000 
          provision for deferred income taxes
        9,813,000 14,313,000 58,525,000 7,047,000 2,570,000 -7,310,000 14,772,000 14,515,000 9,411,000 18,857,000 16,203,000 17,665,000 12,573,000 11,796,000 10,651,000 9,479,000 5,856,000 12,029,000 -60,828,000   19,781,000               8,562,000         5,629,000 8,784,000   21,497,000   18,183,000 24,621,000       2,237,000    9,520,000                 
          amortization of share-based compensation
        10,143,000 2,996,000 3,420,000 3,300,000 7,847,000 2,712,000 3,438,000 2,991,000 6,408,000 2,631,000 3,398,000 3,104,000 5,808,000 2,417,000 2,893,000 2,590,000 5,965,000                                                                 
          amortization of major maintenance costs
        6,703,000 7,144,000 7,719,000 7,450,000 7,185,000 7,607,000 8,210,000 8,410,000 8,345,000 7,916,000 7,007,000 7,051,000 6,992,000 7,354,000 7,272,000 7,292,000 7,113,000 7,024,000 9,107,000 8,722,000 8,360,000 8,357,000 7,384,000 7,370,000 7,103,000 6,667,000 6,864,000 5,457,000 4,974,000 5,160,000 5,262,000 5,445,000 4,893,000  5,294,000 4,904,000 5,034,000 5,659,000 4,915,000 4,687,000 4,608,000 6,800,000 5,428,000 4,932,000                                      
          other
        782,000 1,794,000 -3,632,000 -1,068,000 1,246,000 533,000 -1,041,000 -692,000 1,607,000 4,663,000 -4,890,000 -809,000 -2,302,000 7,325,000 -1,196,000 -2,932,000 -3,480,000 5,650,000 -1,981,000 -3,171,000 -1,138,000 -3,613,000 10,000 3,401,000 112,000  -69,000 -3,262,000 -2,544,000 -111,471,000 112,999,000 -5,000 -1,773,000 -73,989,000 77,884,000 -1,009,000 1,038,000  -429,000 -319,000 -342,000 774,000 1,194,000 -1,124,000 4,199,000 3,534,000 3,605,000 2,181,000 1,320,000 2,155,000 657,000 916,000 1,211,000 798,000 172,000 -49,000 -20,000  -79,000 -41,000 -45,000 712,000 -1,034,000 -415,000 633,000 -590,000 2,000,000 -228,000 188,000 167,000 201,000 -199,000 741,000 242,000 254,000 280,000 -82,000 -2,805,000 780,000 912,000 309,000 
          decrease in cash flows resulting from changes in operating assets and liabilities
        -79,355,000   -82,855,000 -122,307,000   10,631,000 -30,040,000  -41,889,000 75,443,000 -98,321,000           60,132,000 -175,900,000   28,617,000 -81,737,000    -87,926,000           -18,140,000   -3,378,000   -26,538,000 -9,224,000 -39,488,000 -36,285,000  -17,352,000            7,124,000    12,997,000           
          net cash from operating activities
        97,650,000 312,210,000 227,531,000 93,922,000 36,541,000 247,384,000 206,503,000 179,319,000 123,288,000 216,001,000 96,278,000 211,469,000 16,480,000 132,943,000 65,541,000 63,422,000 32,222,000 41,214,000 82,544,000 95,260,000 102,558,000 85,177,000 117,619,000 170,643,000 71,501,000 124,214,000 199,402,000 149,668,000 38,529,000 74,695,000 118,549,000 135,021,000 18,734,000 66,275,000 65,660,000 108,593,000 85,202,000 77,545,000 126,626,000 98,385,000 111,482,000 131,551,000 143,353,000 102,565,000 74,157,000 136,197,000 115,211,000 181,440,000 171,479,000 97,796,000 109,626,000 63,234,000 73,368,000 96,669,000 97,501,000 54,069,000 63,756,000 75,409,000 66,798,000 46,448,000 56,591,000 82,784,000 85,543,000 70,113,000 81,445,000 62,499,000 84,622,000 37,517,000 61,309,000 79,908,000 68,253,000 40,445,000 47,140,000 47,163,000 40,667,000 31,228,000 31,306,000  41,903,000 27,772,000 36,302,000 
          cash flows from investing activities:
                                                                                         
          capital expenditures
        -48,256,000 -47,033,000 -67,280,000 -71,473,000 -78,687,000 -96,670,000 -76,383,000 -88,560,000 -81,047,000 -126,767,000 -103,718,000 -98,046,000 -73,199,000 -52,343,000 -41,204,000 -43,984,000 -35,075,000 -26,047,000 -33,599,000 -24,317,000 -14,052,000 -18,814,000 -36,541,000 -43,605,000 -49,225,000 -64,096,000 -56,800,000 -66,336,000 -60,932,000 -70,109,000 -78,841,000 -111,950,000 -40,961,000 -178,730,000 -40,928,000 -46,744,000 -45,765,000 -61,761,000 -58,257,000 -60,525,000 -50,523,000 -75,050,000 -93,619,000 -96,533,000 -70,799,000 -101,042,000 -62,257,000 -38,872,000 -97,018,000 -71,157,000 -102,041,000 -91,979,000 -61,867,000 -63,028,000 -65,237,000 -66,859,000 -31,114,000 -28,805,000 -40,399,000 -33,214,000 -34,423,000 -29,688,000 -46,364,000 -51,763,000 -64,845,000 -31,494,000 -35,014,000 -57,758,000 -48,753,000 -41,056,000 -27,455,000 -41,923,000 -53,649,000 -29,015,000 -45,728,000 -42,760,000 -21,626,000  -29,555,000 -39,540,000 -24,023,000 
          free cash flows
        49,394,000 265,177,000 160,251,000 22,449,000 -42,146,000 150,714,000 130,120,000 90,759,000 42,241,000 89,234,000 -7,440,000 113,423,000 -56,719,000 80,600,000 24,337,000 19,438,000 -2,853,000 15,167,000 48,945,000 70,943,000 88,506,000 66,363,000 81,078,000 127,038,000 22,276,000 60,118,000 142,602,000 83,332,000 -22,403,000 4,586,000 39,708,000 23,071,000 -22,227,000 -112,455,000 24,732,000 61,849,000 39,437,000 15,784,000 68,369,000 37,860,000 60,959,000 56,501,000 49,734,000 6,032,000 3,358,000 35,155,000 52,954,000 142,568,000 74,461,000 26,639,000 7,585,000 -28,745,000 11,501,000 33,641,000 32,264,000 -12,790,000 32,642,000 46,604,000 26,399,000 13,234,000 22,168,000 53,096,000 39,179,000 18,350,000 16,600,000 31,005,000 49,608,000 -20,241,000 12,556,000 38,852,000 40,798,000 -1,478,000 -6,509,000 18,148,000 -5,061,000 -11,532,000 9,680,000  12,348,000 -11,768,000 12,279,000 
          acquisitions of businesses and marine equipment
        -81,400,000 -9,266,000 -9,200,000 -97,250,000               -6,525,000 -281,825,000 -60,422,000             -11,440,000 -4,641,000                 -271,902,000 -58,500,000                         
          proceeds from disposition of assets
        2,708,000 2,675,000 16,754,000 11,499,000 81,000  4,778,000 6,642,000 2,412,000  1,317,000 12,498,000 8,031,000  9,593,000 9,031,000 14,280,000  22,432,000 11,977,000 4,754,000  1,620,000 925,000 3,993,000 23,167,000 11,126,000 10,177,000 13,187,000 25,586,000 2,598,000 13,027,000 12,181,000 -10,092,000 1,777,000 20,008,000 7,958,000 3,481,000 11,989,000 2,850,000 297,000 2,466,000 396,000 10,240,000 4,255,000 3,521,000 363,000 17,279,000 11,250,000 1,861,000 8,514,000 3,217,000 3,434,000 7,854,000 1,787,000 421,000 1,759,000 2,224,000 1,278,000 4,326,000 1,897,000 3,769,000 2,733,000 214,000 672,000 632,000 79,000 1,225,000 42,000 2,604,000 152,000 134,000 527,000 423,000 634,000 1,557,000 463,000 794,000 -20,000 5,232,000 280,000 
          net cash from investing activities
        -126,948,000 -53,624,000 -59,726,000 -62,974,000 -175,856,000 -102,737,000 -71,605,000 -147,150,000 -78,635,000 -122,532,000 -139,901,000 -85,548,000 -65,168,000 -48,342,000 -31,611,000 -34,953,000 -24,695,000 -15,513,000 -11,167,000 -19,810,000 -9,298,000 -14,242,000 -41,446,000 -324,505,000 -105,654,000 -45,880,000 -50,374,000 -61,529,000 -295,215,000 -79,443,000 -76,243,000 -168,173,000 -458,757,000 -118,528,000 -490,370,000 -26,736,000 -37,807,000 -69,720,000 -50,909,000 -178,666,000 -50,226,000 -72,584,000 -93,223,000 -127,543,000 -73,044,000 -97,521,000 -61,894,000 -21,593,000 -87,300,000 -71,407,000 -93,527,000 -88,762,000 -58,433,000 -97,909,000 -564,628,000 -338,340,000 -87,855,000 -26,581,000 -39,121,000 -28,888,000 -32,526,000 -25,919,000 -43,631,000 -51,549,000 -64,173,000 -30,906,000 -35,237,000 -59,867,000 -50,511,000 -43,872,000 -39,676,000 -43,871,000 -100,484,000 -33,078,000 -75,290,000 -141,239,000 -37,669,000  -30,527,000 -41,308,000 -23,581,000 
          cash flows from financing activities:
                                                                                         
          borrowings on bank credit facilities
        133,735,000   19,097,000 224,110,000   -12,673,000 43,575,000  69,161,000 -81,536,000 112,691,000                                      -4,560,000    -36,390,000                -50,150,000 24,200,000 49,200,000         
          payments on long-term debt
        -70,000,000         -350,000,000 -80,000,000 -285,000,000 -20,000,000 -10,000,000 -45,000,000    -150,000,000 -65,000,000        -37,940,000          -42,000,000   -130,000,000 -13,000,000 -213,000,000 -13,002,000 -6,501,000 -6,502,000 -6,567,000 -26,501,000 -50,000 -10,000 -17,000 -40,000 -34,000 -14,000 -159,000 -13,000 -888,000 -27,000 -36,000 -20,000   -772,000 -40,000   -24,000 -25,000 -24,000 -23,000 -1,000 -1,000 -1,301,000 -1,000 
          payment of debt issuance costs
        -132,000      -3,000  -1,000 -1,236,000                                                                     
          proceeds from exercise of stock options
        4,308,000 4,684,000 262,000 1,042,000 4,279,000 2,587,000 1,509,000 778,000 3,313,000 118,000 2,000 1,549,000 2,336,000 124,000 94,000 411,000 353,000 2,180,000 1,660,000 488,000 1,415,000 277,000 12,695,000 292,000 6,856,000 238,000 580,000 1,258,000   3,337,000 375,000 135,000 2,944,000 4,331,000 1,755,000 311,000 2,262,000 1,923,000 249,000 1,001,000 4,018,000 214,000 135,000 1,060,000 153,000 3,374,000 297,000 718,000 524,000 779,000 753,000 4,201,000 6,542,000 2,145,000 1,012,000 1,947,000 1,097,000 1,662,000 1,080,000 1,109,000 3,830,000 7,169,000 13,716,000 2,006,000 705,000 2,627,000 
          payments related to tax withholding for share-based compensation
        -6,671,000 -4,000 -20,000 -8,000 -5,949,000 -42,000 -17,000 -55,000 -5,284,000 -310,000 -3,000 -40,000 -3,555,000 -215,000 -1,000 -99,000 -3,093,000 -3,000 -808,000 -2,045,000 -2,000 -26,000 -3,165,000 -8,000 -20,000 -2,003,000 -1,000 -8,000 -1,047,000 -3,766,000  -25,000 -1,000 -2,873,000                                             
          treasury stock purchases
        -52,675,000 -101,561,000 -119,965,000 -31,200,000 -101,473,000 -33,302,000 -55,806,000 -43,679,000 -41,787,000 -51,893,000 -23,310,000 -34,416,000 -3,184,000 -4,816,000                                                                   
          net cash from financing activities
        8,537,000 -226,836,000 -189,163,000 -13,643,000 115,949,000 -137,276,000 -121,365,000 -53,845,000 -2,014,000 -103,008,000 49,136,000 -116,017,000 -5,190,000 -41,015,000 -22,043,000 -35,763,000 -9,942,000 -45,265,000 -70,052,000 -74,731,000 -121,265,000 -110,183,000 -65,058,000 -60,238,000 331,987,000 -63,022,000 -162,124,000 -72,907,000 256,175,000 8,931,000 -42,887,000 30,340,000 426,931,000 47,871,000 427,959,000 -83,036,000 -50,273,000 -7,572,000 -73,195,000 81,423,000 -65,424,000 -61,441,000 -49,632,000 5,170,000 -363,000 -54,986,000 -38,095,000 -158,628,000 -82,754,000 -33,610,000 -16,761,000 26,288,000 -26,139,000 9,124,000 468,160,000 119,510,000 592,000 -2,432,000 -19,224,000 1,827,000 -537,000 1,209,000 -10,628,000 -16,126,000 -19,879,000 -24,882,000 -53,571,000 24,783,000 -12,226,000 -34,849,000 -48,095,000 24,105,000 53,460,000 -15,550,000 37,463,000 88,118,000 11,696,000  -10,095,000 13,040,000 -11,069,000 
          decrease in cash and cash equivalents
        -20,761,000           9,904,000 -53,878,000   -7,294,000 -2,415,000            -511,000  -581,000 -2,812,000 -13,092,000  3,249,000 -1,179,000 -2,878,000  2,522,000 1,142,000 -4,168,000 -2,474,000   750,000   1,219,000 1,425,000 -7,221,000 -662,000 760,000 -11,204,000            -2,607,000                 
          cash and cash equivalents, beginning of year
        78,775,000 74,444,000 32,577,000 80,577,000 34,813,000 80,338,000 24,737,000 7,800,000 20,102,000 10,615,000 5,634,000 5,885,000 24,299,000 4,022,000 11,059,000 16,249,000 195,600,000 97,836,000 8,647,000 5,117,000 2,653,000 17,838,000 629,000 
          cash and cash equivalents, end of period
        58,014,000  -21,358,000 17,305,000 51,078,000  13,533,000 -21,676,000 75,216,000  5,513,000 9,904,000 26,699,000  11,887,000 -7,294,000 32,398,000  1,325,000 719,000 52,333,000  11,115,000 -214,100,000 322,571,000  -13,096,000 15,232,000 7,289,000  -581,000 -2,812,000 7,010,000  3,249,000 -1,179,000 2,756,000  2,522,000 1,142,000 1,717,000 -2,474,000 498,000 4,491,000 750,000 -16,310,000 19,244,000 1,219,000 1,425,000 3,838,000 -662,000 760,000 5,045,000  1,033,000 -164,761,000 172,093,000  8,453,000 19,387,000 121,364,000  31,284,000 2,438,000 6,040,000  -4,186,000 2,433,000 3,689,000  -19,518,000 20,679,000 2,769,000  2,840,000 -21,893,000 23,171,000  1,281,000 -496,000 2,281,000 
          supplemental disclosures of cash flow information:
                                                                                         
          cash paid during the period:
                                                                                         
          interest paid
        18,778,000 3,480,000 19,870,000 5,206,000 17,711,000 2,459,000 20,357,000 4,732,000 21,511,000 4,041,000 20,723,000 4,260,000 20,293,000 3,062,000 19,593,000 2,139,000 18,022,000 1,744,000 18,221,000 2,181,000 18,732,000 2,945,000 19,511,000 4,531,000 21,734,000 3,330,000 23,165,000 6,014,000 23,257,000 3,597,000 23,090,000 3,322,000 10,763,000  8,666,000 868,000 8,856,000 948,000 9,107,000 1,080,000 8,743,000                                         
          income taxes paid
        713,000  1,224,000 54,748,000 24,994,000    1,062,000             928,000 1,205,000   -229,000 763,000     589,000 -721,000  3,114,000 14,588,000 1,686,000 3,261,000 382,000 14,931,000 -412,000                                         
          operating cash outflow from operating leases
        13,447,000 13,761,000 13,634,000 12,792,000 11,749,000 11,081,000 11,918,000 11,724,000 11,256,000 10,688,000 10,497,000 12,318,000 10,451,000 10,817,000 11,125,000 11,247,000 11,040,000 10,514,000 11,579,000 11,308,000 10,688,000 11,132,000 11,184,000 11,585,000 9,738,000 9,952,000 9,638,000 9,644,000 10,142,000                                                     
          non-cash investing activity:
                                                                                         
          capital expenditures included in accounts payable
        -2,274,000 -24,694,000 10,974,000 11,601,000 -12,011,000 -8,596,000 3,744,000 -3,605,000 1,590,000 11,872,000 2,759,000 3,133,000 -8,197,000 11,504,000 -4,853,000 -3,168,000 -487,000 32,182,000 4,852,000 -11,194,000 -7,207,000 -24,721,000 6,505,000 7,643,000 -2,707,000 7,465,000 1,033,000 10,399,000 -5,022,000 -10,887,000 10,944,000 -11,050,000 -5,448,000  2,628,000 8,067,000 -1,778,000 259,000 7,473,000 -8,782,000 -987,000                                         
          right-of-use assets obtained in exchange for lease obligations
        4,946,000 23,523,000 37,107,000 8,188,000 5,516,000 14,821,000 17,685,000 15,957,000 5,088,000 6,501,000 11,814,000 10,070,000 10,768,000 8,470,000 4,039,000 3,826,000 6,464,000 15,725,000 10,704,000 1,194,000 6,219,000 4,041,000 3,716,000 34,077,000 4,677,000 11,459,000 7,199,000 1,245,000 1,292,000                                                     
          provision for doubtful accounts
                                                                                         
          gain on disposition of assets
                                     -1,950,000                                        -148,000 -30,000   -239,000 -255,000    24,000   
          impairments
                                                                                         
          increase in cash flows resulting from changes in:
                                                                                         
          accounts receivable
                                     -15,016,000    -106,635,000                        165,000 -5,526,000 2,323,000 -14,525,000 4,360,000 10,376,000 9,278,000 35,069,000                 
          inventory
                                                                                         
          other assets
                                     -87,438,000    -299,445,000                                                
          income taxes payable
                                     -4,222,000    -5,781,000                                                
          accounts payable
                                     -228,059,000    -224,593,000                                                
          accrued and other liabilities
                                                                                         
          borrowings (payments) on bank credit facilities
         -129,926,000    -4,949,000        -20,306,000 19,392,000 1,109,000 1,163,000 -48,000 -54,434,000 -74,017,000 -119,606,000 -110,115,000 -64,852,000 -60,010,000 485,001,000     9,937,000     429,036,000   -3,403,000   -62,886,000  88,121,000 102,200,000    -30,310,000                                  
          borrowings on long-term debt
                 240,000,000 60,000,000            500,000,000   499,295,000               225,000,000    1,000                            
          payment of debt issue costs
                                       -12,000 -4,251,000                                                 
          increase in cash and cash equivalents
         31,750,000 -21,358,000 17,305,000 -23,366,000 7,371,000 13,533,000 -21,676,000 42,639,000 -9,539,000    43,586,000    -19,564,000 1,325,000 719,000 -28,005,000 -39,248,000 11,115,000 -214,100,000 297,834,000 15,312,000 -13,096,000                 -19,808,000   15,222,000       7,884,000 1,033,000 -164,761,000 -23,507,000 46,396,000 8,453,000 19,387,000 23,528,000 58,074,000 31,284,000   6,711,000 -4,186,000 2,433,000 -1,428,000 1,187,000 -19,518,000 20,679,000 116,000 -1,465,000 2,840,000 -21,893,000 5,333,000  1,281,000 -496,000 1,652,000 
          cash and cash equivalents, end of year
                                                                                         
          increase in cash flows resulting from changes in operating assets and liabilities
                      -43,742,000 -31,728,000 -50,782,000  3,578,000 15,886,000 38,377,000              -37,177,000 16,725,000 -8,140,000  19,568,000 -12,884,000 2,611,000 8,059,000   -69,553,000   43,423,000         -10,087,000            -5,773,000    127,000  -752,000    9,398,000 -4,629,000 6,904,000 
          acquisitions of businesses and marine equipment, net of cash acquired
                                 -4,951,000 -4,700,000 -5,370,000 -247,470,000 -34,670,000 -69,250,000 -429,977,000 70,294,000                    -42,745,000                -5,419,000 -12,374,000           
          proceeds from disposition of assets and other
                                                                                         
          return of investment to noncontrolling interests and other
                                                                                         
          income taxes paid (refunded)
             4,091,000 1,085,000   1,331,000 803,000 -68,615,000 694,000 456,000 907,000                                                                   
          provision (credit) for doubtful accounts
                                                                                         
          impairments and other charges
                            127,933,000 433,341,000                                                         
          return of investment to noncontrolling interest and other
                  -24,000 -25,000 -24,000  -80,000 -237,000 -348,000                                                                 
          acquisitions of businesses
                        -3,900,000                                                                 
          income taxes refunded
                        -24,000  441,000 1,208,000 -117,659,000    -160,000    -1,024,000                                                     
          amortization of unearned share-based compensation
                         2,920,000 3,645,000 3,426,000 5,722,000 2,656,000 3,414,000 3,321,000 5,331,000 2,533,000 3,172,000 3,007,000 4,900,000 2,455,000 3,098,000 6,000,000 7,551,000 805,000 3,067,000 3,231,000 2,693,000 2,834,000 3,296,000 2,961,000 2,584,000 3,127,000 2,713,000 2,538,000 3,551,000 3,120,000 2,153,000 3,860,000 2,927,000 2,134,000 2,842,000 2,583,000 1,906,000                             
          net loss
                            -3,120,000                                                             
          adjustments to reconcile net loss to net cash from operations:
                                                                                         
          return of investment to noncontrolling interest
                          -739,000 -25,000                                                             
          benefit for deferred income taxes
                            -533,000   -12,506,000 -6,082,000                                                         
          return of investment to noncontrolling interests
                                                                                         
          purchase of treasury stock
                                             -1,827,000 -63,304,000 -40,840,000 -98,011,000              -3,209,000 -18,887,000       -7,476,000 -22,726,000 -3,175,000            
          cash acquired in acquisition
                                     2,313,000                                                
          payments of debt issue costs
                                  -165,000 -2,232,000                                                     
          cash paid (received) during the period:
                                                                                         
          equity in earnings of affiliates, net of distributions and contributions
                                                                                         
          impairment and other charges
                                                                                         
          amortization of leases
                                 -80,000 -256,000 -600,000 446,000                                                     
          amortization of debt issuance costs
                                 490,000 493,000 399,000 320,000 320,000 320,000 319,000 259,000  198,000 388,000 200,000 201,000 199,000 201,000 200,000                                         
          acquisitions of noncontrolling interest
                                                                                         
          stock issued in acquisition
                                                                                        
          debt assumed in acquisition
                                                                                       
          benefit from deferred income taxes
                                  14,495,000 13,517,000 12,490,000  13,457,000 14,535,000 8,846,000 44,222,000 14,132,000    16,582,000 14,969,000 14,713,000 5,921,000 6,619,000 7,182,000            9,930,000 13,810,000     10,517,000 13,006,000    8,866,000 4,598,000 5,762,000             
          payments on bank credit facilities
                                  -103,572,000 -73,004,000 -240,801,000   18,929,000 -64,414,000    -48,451,000         7,300,000 -41,150,000   -43,650,000   -22,510,000           -21,000,000                -13,600,000 
          impairment of long-lived assets
                                                                                         
          impairment of goodwill
                                                                                         
          borrowings (payments) on long-term debt
                                                                           -26,000    978,000         
          fair value of property transferred in acquisition
                                                                                       
          current assets:
                                                                                         
          cash and cash equivalents
                                         -4,810,000                                                
          accounts receivable:
                                                                                         
          trade – less allowance for doubtful accounts
                                                                                         
          inventories – net
                                                                                         
          prepaid expenses and other current assets
                                                                                         
          total current assets
                                                                                         
          property and equipment
                                                                                         
          less accumulated depreciation
                                                                                         
          property and equipment – net
                                                                                         
          goodwill
                                                                                         
          other intangibles – net
                                                                                         
          total assets
                                                                                         
          current liabilities:
                                                                                         
          bank notes payable
                                                                                         
          accrued liabilities
                                                                                         
          deferred revenues
                                                                                         
          total current liabilities
                                                                                         
          long-term debt – less current portion
                                                                                         
          deferred income taxes
                                                                              -1,567,000 1,216,000 1,041,000  -2,891,000 -64,000 20,000  1,386,000 -352,000 -364,000 
          other long-term liabilities
                                                                                         
          total long-term liabilities
                                                                                         
          contingencies and commitments
                                                                                         
          equity:
                                                                                         
          kirby stockholders’ equity:
                                                                                         
          common stock, .10 par value per share. authorized 120,000,000 shares, issued 65,472,000 shares
                                                                                         
          additional paid-in capital
                                                                                         
          accumulated other comprehensive income – net
                                                                                         
          retained earnings
                                                                                         
          treasury stock – at cost, 5,595,000 shares at september 30, 2018 and 5,783,000 at december 31, 2017
                                                                                         
          total kirby stockholders’ equity
                                                                                         
          noncontrolling interests
                                                                                         
          total equity
                                                                                         
          total liabilities and equity
                                                                                         
          revenues:
                                                                                         
          marine transportation
                                         1,090,083,000                                                
          distribution and services
                                                                                         
          total revenues
                                         1,571,384,000                                                
          costs and expenses:
                                                                                         
          costs of sales and operating expenses
                                         1,031,322,000                                                
          selling, general and administrative
                                         126,794,000                                                
          taxes, other than on income
                                         8,001,000                                                
          total costs and expenses
                                         1,259,913,000                                                
          operating income
                                         311,471,000                                                
          other income
                                         -85,000                                                
          interest expense
                                         -18,997,000                                                
          earnings before taxes on income
                                         292,665,000                                                
          benefit from taxes on income
                                         -108,835,000                                                
          less: net earnings attributable to noncontrolling interests
                                         -2,999,000                                                
          net earnings attributable to kirby
                                         180,831,000                               28,006,000                 
          net earnings per share attributable to kirby common stockholders:
                                                                                         
          basic
                                         3,230                                                
          diluted
                                         3,210                                                
          other comprehensive income, net of taxes:
                                                                                         
          pension and postretirement benefits
                                         -10,777,000                                                
          foreign currency translation adjustments
                                         266,000                                                
          reclassification to retained earnings of stranded tax effects from tax reform
                                                                                         
          total other comprehensive income, net of taxes
                                                                                         
          total comprehensive income, net of taxes
                                         178,536,000                                                
          net earnings attributable to noncontrolling interests
                                         -2,999,000                                                
          comprehensive income attributable to kirby
                                         175,537,000                                                
          income taxes
                                                 23,592,000 45,220,000 140,000 26,351,000 58,067,000 565,000 5,031,000 18,146,000 -177,000 10,179,000 18,425,000 749,000 15,770,000 12,088,000 6,821,000 247,000 490,000 15,448,000 33,809,000 996,000 4,315,000 9,856,000 16,716,000 118,000 2,279,000 24,101,000 36,754,000 2,046,000 20,449,000 13,472,000 29,283,000 137,000 12,032,000 16,878,000 23,229,000 2,933,000  9,637,000 17,959,000 166,000 
          basis for preparation of the condensed financial statements
                                                                                         
          accounting standards adoptions
                                                                                         
          statements of earnings:
                                                                                         
          distribution and services revenues
                                                                                         
          statements of comprehensive income:
                                                                                         
          statements of cash flows:
                                                                                         
          balance sheets:
                                                                                         
          trade receivables
                                                                                         
          revenues
                                                                                         
          marine transportation segment:
                                                                                         
          inland transportation
                                                                                         
          coastal transportation
                                                                                         
          distribution and services segment:
                                                                                         
          oil and gas
                                                                                         
          commercial and industrial
                                                                                         
          acquisitions
                                                                                         
          assets:
                                                                                         
          cash
                                                                                         
          liabilities:
                                                                                         
          total liabilities
                                                                                         
          net assets acquired
                                                                                         
          inventories
                                                                                         
          finished goods
                                         -117,534,000                                                
          work in process
                                         -28,472,000                                                
          fair value measurements
                                                                                         
          long-term debt
                                                                                         
          stock award plans
                                                                                         
          compensation cost
                                         6,161,000                                                
          income tax benefit
                                         2,300,000                                                
          outstanding at december 31, 2017
                                                                                         
          granted
                                         -123,018,400                                                
          exercised
                                         21,163,360                                                
          forfeited
                                         17,054,000                                                
          outstanding at september 30, 2018
                                                                                         
          range of exercise prices
                                                                                         
          51.23
                                                                                         
          64.65 - 68.50
                                                                                         
          70.65 - 75.50
                                                                                         
          93.64 - 101.46
                                                                                         
          51.23 - 101.46
                                                                                         
          nonvested balance at december 31, 2017
                                                                                         
          vested
                                         105,469,340                                                
          nonvested balance at september 30, 2018
                                                                                         
          29.60
                                                                                         
          41.24 – 56.45
                                                                                         
          61.89 – 62.48
                                                                                         
          70.65 – 99.52
                                                                                         
          29.60 – 99.52
                                                                                         
          dividend yield
                                                                                         
          average risk-free interest rate
                                         400                                                
          stock price volatility
                                         6,000                                                
          estimated option term
                                                                                         
          other comprehensive income
                                                                                         
          amortization of net actuarial loss
                                                                                         
          foreign currency translation
                                                                                         
          total
                                                                                         
          actuarial gains
                                                                                         
          adoption of asu 2018-02 – reclassification to retained earnings
                                                                                         
          segment data
                                                                                         
          segment profit
                                                                                         
          total assets:
                                                                                         
          general corporate expenses
                                                                                         
          general corporate assets
                                                                                         
          investment in affiliates
                                                                                         
          taxes on income
                                                                                         
          earnings before taxes on income:
                                                                                         
          united states
                                                                                         
          foreign
                                                                                         
          benefit from taxes on income:
                                                                                         
          federal:
                                                                                         
          current
                                         30,023,000                                                
          deferred
                                         51,319,000                                                
          state and local:
                                                                                         
          foreign - current
                                                                                         
          earnings per share
                                                                                         
          undistributed earnings allocated to restricted shares
                                                                                         
          income available to kirby common stockholders - basic
                                                                                         
          undistributed earnings reallocated to restricted shares
                                                                                         
          income available to kirby common stockholders - diluted
                                                                                         
          shares outstanding:
                                                                                         
          weighted-average common stock issued and outstanding
                                                                                         
          weighted-average unvested restricted stock
                                                                                         
          weighted-average common stock outstanding - basic
                                                                                         
          dilutive effect of stock options and restricted stock units
                                                                                         
          weighted-average common stock outstanding - diluted
                                                                                         
          retirement plans
                                                                                         
          components of net periodic benefit cost:
                                                                                         
          service cost
                                         5,561,000                                                
          interest cost
                                         6,373,000                                                
          expected return on plan assets
                                                                                         
          amortization of actuarial loss
                                                                                         
          net periodic benefit cost
                                         -1,361,000                                                
          amortization of actuarial gain
                                                                                         
          contingencies
                                                                                         
          item 2.
                                                                                         
          weighted-average number of common stock - diluted
                                                                                         
          marine transportation revenues
                                                                                         
          operating margins
                                                                                         
          markets serviced
                                                                                         
          petrochemicals
                                                                                         
          black oil
                                                                                         
          refined petroleum products
                                                                                         
          agricultural chemicals
                                                                                         
          current assets
                                                                                         
          other intangibles
                                                                                         
          liabilities and stockholders’ equity:
                                                                                         
          current liabilities
                                                                                         
          item 3.
                                                                                         
          item 4.
                                                                                         
          item 1.
                                                                                         
          item 1a.
                                                                                         
          item 6.
                                                                                         
          31.1
                                                                                         
          31.2
                                                                                         
          32
                                                                                         
          101.ins*
                                                                                         
          101.sch*
                                                                                         
          101.cal*
                                                                                         
          101.def*
                                                                                         
          101.lab*
                                                                                         
          101.pre*
                                                                                         
          *
                                                                                         
          kirby corporation
                                                                                         
          by:
                                                                                         
          diesel engine services
                                                                                         
          loss on disposition of assets
                                                                                         
          equity in earnings of affiliates
                                                                                         
          change in fair value of derivative instruments
                                                                                         
          total comprehensive loss, net of taxes
                                                                                         
          retirement of interest rate swaps assumed in acquisition
                                                                                        
          proceeds from noncontrolling interest investments
                                                                                         
          excess tax benefit from equity compensation plans
                                                 -49,000 49,000 1,015,000 -19,000 1,502,000 4,653,000 571,000 387,000 1,866,000 -33,000 38,000 2,337,000 559,000 -32,000   208,000 -338,000 625,000 -122,000   -577,000 883,000 316,000 -852,000 2,791,000 3,260,000             
          cash paid during the year:
                                                                                         
          interest
                                                 8,926,000 1,360,000 9,190,000 8,415,000 1,003,000 8,957,000 11,909,000 2,592,000 5,420,000 5,309,000 5,277,000 5,342,000 5,131,000 5,455,000 3,194,000 2,675,000 2,656,000 2,767,000 2,620,000 2,561,000 2,687,000 2,717,000 2,681,000 2,814,000 3,381,000 3,305,000 3,383,000 3,933,000 4,557,000 5,396,000 5,215,000 5,003,000 4,882,000 4,163,000 2,884,000 3,225,000  2,800,000 3,229,000 2,999,000 
          noncash investing activity:
                                                                                         
          stock issued in acquisitions
                                                                                         
          cash acquired in acquisitions
                                                                               -77,000       
          disposition of assets for receivables
                                                                                         
          common stock:
                                                                                         
          balance at beginning of year
                                                                                         
          issuance of shares in acquisitions
                                                                                         
          balance at end of year
                                                                                         
          additional paid-in capital:
                                                                                         
          excess of proceeds received upon exercise of stock options and issuance of restricted stock over cost of treasury stock issued
                                                                                         
          tax benefit realized from equity compensation plans
                                                                                         
          issuance of restricted stock, net of forfeitures
                                                                                         
          amortization of unearned compensation
                                                              2,617,000 2,530,000 1,960,000  2,291,000 2,073,000 4,669,000 3,430,000 2,406,000 2,179,000 1,840,000 2,025,000 2,434,000 2,641,000 2,158,000 1,520,000 1,838,000 1,665,000 1,320,000 1,376,000 2,110,000 1,900,000 1,430,000     
          accumulated other comprehensive income:
                                                                                         
          other comprehensive loss, net of taxes
                                                                                         
          retained earnings:
                                                                                         
          net earnings attributable to kirby for the year
                                                                                         
          treasury stock:
                                                                                         
          cost of treasury stock issued upon exercise of stock options and issuance of restricted stock
                                                                                         
          noncontrolling interests:
                                                                                         
          acquisition of noncontrolling interests
                                                                                        
          balance at the end of year
                                                                                         
          december 31, 2012:
                                                                                         
          derivatives
                                                                                         
          contingent liabilities
                                                                                         
          december 31, 2011:
                                                                                         
          contingent liability
                                                                                         
          notional amount
                                                                                         
          100,000
                                                                                         
          50,000
                                                                                         
          liability derivatives
                                                                                         
          derivatives designated as hedging instruments under asc 815:
                                                                                         
          foreign currency contracts
                                                                                         
          interest rate contracts
                                                                                         
          total derivatives designated as hedging instruments under asc 815
                                                                                         
          total liability derivatives
                                                                                         
          derivatives in asc 815 cash
                                                                                         
          flow hedging relationships:
                                                                                         
          foreign exchange contracts
                                                                                         
          long-term debt, including current portion:
                                                                                         
          150,000,000 senior notes series a due february 27, 2020
                                                                                         
          350,000,000 senior notes series b due february 27, 2023
                                                                                         
          540,000,000 term loan due may 31, 2016
                                                                                         
          325,000,000 revolving credit facility due november 9, 2015
                                                                                         
          10,000,000 credit line due june 30, 2013
                                                                                         
          senior notes due february 28, 2013
                                                                                         
          other long-term debt
                                                                                         
          2013
                                                                                         
          2014
                                                                                         
          2015
                                                                                         
          2016
                                                                                         
          2017
                                                                                         
          thereafter
                                                                                         
          earnings before taxes on income — united states
                                                                                         
          state and local
                                         8,841,000                                                
          united states income tax statutory rate
                                                                                         
          state and local taxes, net of federal benefit
                                                                                         
          other – net
                                                                                         
          current deferred tax assets:
                                                                                         
          compensated absences
                                                                                         
          allowance for doubtful accounts
                                                                                         
          insurance accruals
                                                                                         
          non-current deferred tax assets and liabilities:
                                                                                         
          deferred tax assets:
                                                                                         
          postretirement health care benefits
                                                                                         
          deferred compensation
                                                                                         
          unrealized loss on derivative financial instruments
                                                                                         
          unrealized loss on defined benefit plans
                                                                                         
          operating income carryforwards
                                                                                         
          deferred tax liabilities:
                                                                                         
          property
                                                                                         
          deferred state taxes
                                                                                         
          pension benefits
                                                                                         
          goodwill and other intangibles
                                                                                         
          additions based on tax positions related to the current year
                                                                                         
          additions for tax positions of prior years
                                                                                         
          reductions for tax positions of prior years
                                                                                         
          settlements
                                                                                         
          rental expense:
                                                                                         
          marine equipment — barges
                                                                                         
          marine equipment — towing vessels
                                                                                         
          other buildings and equipment
                                                                                         
          rental expense
                                                                                         
          outstanding at december 31, 2009
                                                                                         
          canceled or expired
                                                                                         
          outstanding at december 31, 2010
                                                                                         
          outstanding at december 31, 2011
                                                                                         
          outstanding at december 31, 2012
                                                                                         
          23.98 — 32.56
                                                                                         
          34.40 — 36.35
                                                                                         
          46.74
                                                                                         
          65.28 — 66.72
                                                                                         
          23.98 — 66.72
                                                                                         
          nonvested balance at december 31, 2009
                                                                                         
          nonvested balance at december 31, 2010
                                                                                         
          nonvested balance at december 31, 2011
                                                                                         
          nonvested balance at december 31, 2012
                                                                                         
          12.69 — 17.88
                                                                                         
          20.28 — 29.60
                                                                                         
          35.17 — 36.82
                                                                                         
          41.24 — 56.45
                                                                                         
          61.89 — 62.48
                                                                                         
          12.69 — 62.48
                                                                                         
          asset category
                                                                                         
          u.s. equity securities
                                                                                         
          international equity securities
                                                                                         
          debt securities
                                                                                         
          change in benefit obligation
                                                                                         
          benefit obligation at beginning of year
                                                                                         
          actuarial gain
                                                                                         
          gross benefits paid
                                                                                         
          benefit obligation at end of year
                                                                                         
          accumulated benefit obligation at end of year
                                                                                         
          weighted-average assumption used to determine benefit obligation at end of year
                                                                                         
          discount rate
                                                                                         
          rate of compensation increase
                                                                                         
          health care cost trend rate
                                                                                         
          initial rate
                                                                                         
          ultimate rate
                                                                                         
          years to ultimate
                                                                                         
          effect of one-percentage-point change in assumed health care cost trend rate on postretirement obligation
                                                                                         
          increase
                                                                                         
          decrease
                                                                                         
          change in plan assets
                                                                                         
          fair value of plan assets at beginning of year
                                                                                         
          actual return on plan assets
                                                                                         
          employer contribution
                                                                                         
          fair value of plan assets at end of year
                                                                                         
          funded status at end of year
                                                                                         
          fair value of plan assets
                                                                                         
          benefit obligations
                                                                                         
          funded status and amount recognized at end of year
                                                                                         
          amounts recognized in the consolidated balance sheets
                                                                                         
          current liability
                                                                                         
          long-term liability
                                                                                         
          amounts recognized in accumulated other comprehensive income
                                                                                         
          net actuarial gain
                                                                                         
          prior service cost
                                                                                         
          accumulated other compensation income
                                                                                         
          projected benefit obligation in excess of plan assets
                                                                                         
          projected benefit obligation at end of year
                                                                                         
          accumulated benefit obligation in excess of plan assets
                                                                                         
          expected employer contributions
                                                                                         
          first year
                                                                                         
          expected benefit payments
                                                                                         
          year one
                                                                                         
          year two
                                                                                         
          year three
                                                                                         
          year four
                                                                                         
          year five
                                                                                         
          next five years
                                                                                         
          expected federal subsidy
                                                                                         
          components of net periodic benefit cost
                                                                                         
          amortization:
                                                                                         
          actuarial loss
                                                                                         
          prior service credit
                                                                                         
          other changes in plan assets and benefit obligations recognized in other comprehensive income
                                                                                         
          current year actuarial loss
                                                                                         
          recognition of actuarial loss
                                                                                         
          recognition of prior service credit
                                                                                         
          total recognized in other comprehensive income
                                                                                         
          total recognized in net periodic benefit cost and other comprehensive income
                                                                                         
          weighted-average assumptions used to determine net periodic benefit cost
                                                                                         
          expected long-term rate of return on plan assets
                                                                                         
          curtailment loss
                                                                                         
          other changes in benefit obligations recognized in other comprehensive income
                                                                                         
          current year actuarial gain
                                                                                         
          recognition of actuarial gain
                                                                                         
          recognition of prior service cost
                                                                                         
          adjustment for actual medicare part d reimbursement
                                                                                         
          health care cost trend rate:
                                                                                         
          effect of one-percentage-point change in assumed health care cost trend rate on aggregate service and interest cost
                                                                                         
          pension and post-retirement benefits
                                                                                         
          income available to kirby common stockholders — basic
                                                                                         
          income available to kirby common stockholders — diluted
                                                                                         
          weighted-average common stock outstanding — basic
                                                                                         
          dilutive effect of stock options
                                                                                         
          weighted-average common stock outstanding — diluted
                                                                                         
          costs and expenses
                                                                                         
          depreciation and amortization:
                                                                                         
          capital expenditures:
                                                                                         
          item 15.
                                                                                         
          exhibit number
                                                                                         
          2.1
                                                                                         
          2.2
                                                                                         
          2.3
                                                                                         
          2.4
                                                                                         
          3.1
                                                                                         
          3.2
                                                                                         
          4.1
                                                                                         
          4.2
                                                                                         
          10.1
                                                                                         
          10.2
                                                                                         
          10.3
                                                                                         
          10.4
                                                                                         
          10.5
                                                                                         
          10.6†
                                                                                         
          10.7†
                                                                                         
          10.8†*
                                                                                         
          10.9†
                                                                                         
          10.10†
                                                                                         
          10.11†
                                                                                         
          10.12†
                                                                                         
          10.13†
                                                                                         
          10.14†
                                                                                         
          21.1*
                                                                                         
          23.1*
                                                                                         
          31.1*
                                                                                         
          31.2*
                                                                                         
          32*
                                                                                         
          101.ins**
                                                                                         
          101.sch**
                                                                                         
          101.cal**
                                                                                         
          101.def**
                                                                                         
          101.lab**
                                                                                         
          101.pre**
                                                                                         
          **
                                                                                         
          †
                                                                                         
          signature
                                                                                         
          /s/ joseph h. pyne
                                                                                         
          joseph h. pyne
                                                                                         
          /s/ david w. grzebinski
                                                                                         
          david w. grzebinski
                                                                                         
          /s/ ronald a. dragg
                                                                                         
          ronald a. dragg
                                                                                         
          /s/ richard j. alario
                                                                                         
          richard j. alario
                                                                                         
          /s/ c. sean day
                                                                                         
          c. sean day
                                                                                         
          /s/ bob g. gower
                                                                                         
          bob g. gower
                                                                                         
          /s/ william m. lamont, jr.
                                                                                         
          william m. lamont, jr.
                                                                                         
          /s/ david l. lemmon
                                                                                         
          david l. lemmon
                                                                                         
          /s/ monte j. miller
                                                                                         
          monte j. miller
                                                                                         
          /s/ george a. peterkin, jr.
                                                                                         
          george a. peterkin, jr.
                                                                                         
          /s/ richard r. stewart
                                                                                         
          richard r. stewart
                                                                                         
          /s/ william m. waterman
                                                                                         
          william m. waterman
                                                                                         
          current portion of long-term debt
                                                                                         
          treasury stock – at cost, 5,784,000 shares at september 30, 2017 and 5,921,000 at december 31, 2016
                                                                                         
          cash consideration paid
                                                                                         
          stock consideration through issuance of company common stock
                                                                                         
          fair value of consideration transferred
                                                                                         
          outstanding at december 31, 2016
                                                                                         
          outstanding at september 30, 2017
                                                                                         
          46.74 - 51.23
                                                                                         
          64.65 - 74.99
                                                                                         
          93.64 - 96.85
                                                                                         
          101.46 - 104.37
                                                                                         
          46.74 - 104.37
                                                                                         
          nonvested balance at december 31, 2016
                                                                                         
          nonvested balance at september 30, 2017
                                                                                         
          actuarial losses
                                                                                         
          earnings before taxes on income – united states
                                                                                         
          subsequent event
                                                                                         
          land-based
                                                                                         
          marine
                                                                                         
          power generation
                                                                                         
          10.1†*
                                                                                         
          dated: november 8, 2017
                                                                                         
          payment of contingent liability
                                                    -4,756,000 -5,000,000                                
          acquisition of noncontrolling interest
                                                                                        
          acquisition of marine equipment
                                                  -41,250,000                                      
          acquisitions of marine equipment
                                                                                         
          acquisition of businesses and marine equipment
                                                       -1,532,000 -2,111,000                                
          excess tax benefit (expense) from equity compensation plans
                                                                777,000                         
          increase in cash flows resulting from changes in operating assets and liabilities:
                                                                                         
          equity in earnings of affiliates, net of distributions
                                                                                         
          adjustments to reconcile net earnings to net cash from operating activities:
                                                                                         
          acquisition of business and marine equipment
                                                                                         
          adjustments to reconcile net earnings attributable to kirby to net cash from operations:
                                                                                         
          increase (decrease) in cash flows resulting from changes in operating assets and liabilities:
                                                                                         
          benefit from doubtful accounts
                                                                                         
          provision (credit) for deferred income taxes
                                                                                         
          equity in earnings of marine affiliates, net of distributions
                                                                             -40,000 -23,000      -466,000  -695,000 273,000 1,193,000 
          return of investment to minority interests
                                                                                         
          proceeds from minority interest investment
                                                                                         
          disposition of assets for note receivables
                                                                                 425,000       
          debt assumed in acquisitions
                                                                                        
          acquisitions of business and marine equipment, net of cash acquired
                                                                          -302,000 -3,334,000 -1,800,000    -47,317,000  -22,652,000 -101,268,000 -15,505,000     
          borrowings (payments ) on bank credit facilities
                                                                                         
          accrued payable for working capital adjustment related to acquisition
                                                                                    735,000     
          borrowings (payment) on bank credit facilities
                                                                            -14,150,000             
          cash assumed in acquisition
                                                                                         
          loss on debt retirement
                                                                                        
          proceeds from senior notes
                                                                                       
          payments on senior notes
                                                                                       
          tax benefit from equity compensation plans
                                                                              481,000 30,000 1,911,000 216,000 -246,000 2,173,000 3,377,000     
          accrued payable for working capital adjustment related to acquisitions
                                                                                264,000         
          equity in earnings of marine affiliates
                                                                                -98,000         
          cash paid (received) during the year:
                                                                                         
          noncash investing and financing activity:
                                                                                         
          notes payable issued in acquisition
                                                                                         
          equity in (earnings) loss of marine affiliates, net of distributions
                                                                                  -88,000       
          proceeds from (payments on) bank credit facilities
                                                                                         
          proceeds from bank credit facilities
                                                                                         
          increase (decrease) in cash flows resulting from changes in operating assets and liabilities
                                                                                    -7,266,000     
          disposition of asset for note receivable
                                                                                        
          proceeds from (payments on) senior notes
                                                                                         
          adjustments to reconcile net earnings to net cash provided by operations: