7Baggers

ArcBest Corporation
(NASDAQ:ARCB) 

ARCB stock logo

ArcBest Corporation provides freight transportation and integrated logistics services. It operates through three segments: Asset-Based, ArcBest, and FleetNet. The Asset-Based segment transports general commodities, such as food, textiles, apparel, furniture, appliances, chemicals, nonbulk petroleum ...

Founded: 1966
Full Time Employees: 13,000
Sector: Industrials
Industry: Trucking

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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 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 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 2007-09-30 2007-06-30 2007-03-31 2006-09-30 2006-06-30 2006-03-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 2004-06-30 2004-03-31 
                                                                                         
      revenues
    998,786,000 972,688,000 1,048,137,000 1,022,256,000 967,077,000 1,001,645,000 1,063,124,000 1,077,831,000 1,036,419,000 1,089,535,000 1,128,350,000 1,103,464,000 1,106,094,000 1,244,218,000 1,351,831,000 1,392,929,000 1,335,074,000 1,185,224,000 1,016,657,000 948,973,000 829,213,000 816,414,000 794,980,000 627,370,000 701,399,000 717,418,000 787,563,000 771,490,000 711,839,000 774,279,000 826,158,000 793,350,000 700,001,000 710,721,000 744,280,000 720,368,000 651,088,000 688,214,000 713,923,000 676,627,000 621,455,000 648,134,000 709,380,000 696,115,000 613,276,000 664,848,000 711,295,000 658,646,000                                      
      operating expenses
    995,356,000 980,945,000 993,510,000 984,947,000 960,447,000 963,484,000 928,131,000 1,028,986,000 1,013,984,000 1,025,282,000 1,083,259,000 1,061,348,000 1,084,935,000 1,192,984,000 1,236,070,000 1,255,583,000 1,240,146,000 1,098,289,000 929,096,000 874,674,000 797,022,000 786,162,000 755,198,000 606,945,000 693,580,000 728,647,000 756,355,000 736,290,000 703,248,000 737,117,000 770,103,000 790,194,000 687,276,000 694,041,000 719,931,000 695,634,000 663,341,000 687,003,000 693,553,000 659,973,000 630,720,000 640,821,000 675,942,000 662,649,000 611,996,000 646,799,000 678,354,000 631,694,000 586,606,000                                     
      operating income
    3,430,000 -8,257,000 54,627,000 37,309,000 6,630,000 38,161,000 134,993,000 48,845,000 22,435,000 64,253,000 45,091,000 42,116,000 21,159,000 51,234,000 115,761,000 137,346,000 94,928,000 86,935,000 87,561,000 74,299,000 32,191,000 30,252,000 39,782,000 20,425,000 7,819,000 -11,229,000 31,208,000 35,200,000 8,591,000 37,162,000 56,055,000 3,156,000 12,725,000 16,680,000 24,349,000 24,734,000 -12,253,000 1,211,000 20,370,000 16,654,000 -9,265,000 7,313,000 33,438,000 33,466,000 1,280,000 18,049,000 32,941,000 26,952,000  13,502,000 20,502,000 8,417,000   12,233,000 7,201,000  1,635,000 21,118,000 8,998,000      -100,570,000 -12,237,000 -27,297,000 -28,601,000 -15,802,000 25,492,000 25,682,000 13,152,000 28,186,000 30,315,000 6,778,000 49,788,000 46,455,000 8,356,000 50,083,000 38,741,000 17,425,000 44,225,000 31,990,000 8,290,000 
      yoy
    -48.27% -121.64% -59.53% -23.62% -70.45% -40.61% 199.38% 15.98% 6.03% 25.41% -61.05% -69.34% -77.71% -41.07% 32.21% 84.86% 194.89% 187.37% 120.10% 263.76% 311.70% -369.41% 27.47% -41.97% -8.99% -130.22% -44.33% 1015.34% -32.49% 122.79% 130.21% -87.24% -203.85% 1277.37% 19.53% 48.52% 32.25% -83.44% -39.08% -50.24% -823.83% -59.48% 1.51% 24.17%  33.68% 60.67% 220.21%   67.60% 16.89%   -42.07% -19.97%          536.44% -148.00% -206.29% -317.47% -156.06% -15.91% 278.90% -73.58% -39.33% 262.79% -86.47% 28.52% 166.60% -81.11% 56.56% 367.32%     
      qoq
    -141.54% -115.12% 46.42% 462.73% -82.63% -71.73% 176.37% 117.72% -65.08% 42.50% 7.06% 99.05% -58.70% -55.74% -15.72% 44.68% 9.19% -0.71% 17.85% 130.81% 6.41% -23.96% 94.77% 161.22% -169.63% -135.98% -11.34% 309.73% -76.88% -33.70% 1676.14% -75.20% -23.71% -31.50% -1.56% -301.86% -1111.81% -94.05% 22.31% -279.75% -226.69% -78.13% -0.08% 2514.53% -92.91% -45.21% 22.22%   -34.14% 143.58%    69.88%   -92.26% 134.70%       721.85% -55.17% -4.56% 81.00% -161.99% -0.74% 95.27% -53.34% -7.02% 347.26% -86.39% 7.17% 455.95% -83.32% 29.28% 122.33% -60.60% 38.25% 285.89%  
      other income
                                                            253,000                             
      interest and dividend income
    676,000 1,200,000 1,368,000 1,037,000 1,150,000 1,932,000 3,130,000 3,241,000 3,315,000 4,124,000 3,946,000 3,725,000 2,933,000 2,343,000 1,147,000 361,000 106,000 238,000 323,000 322,000 392,000 494,000 756,000 991,000 1,375,000 1,591,000 1,768,000 1,616,000 1,478,000 1,554,000 1,120,000 714,000 526,000 388,000 346,000 285,000 274,000 345,000 390,000 387,000 401,000 402,000 378,000 271,000 234,000 251,000 215,000 194,000 190,000 182,000 167,000 161,000 171,000 185,000 155,000 215,000  279,000 273,000 273,000 243,000 274,000 313,000 274,000 334,000 454,000 666,000 803,000 930,000 1,178,000 1,492,000 1,448,000 1,819,000             
      interest and other related financing costs
    -4,288,000 -3,318,000 -3,334,000 -2,956,000 -2,755,000 -2,393,000 -2,281,000 -2,078,000 -2,228,000 -2,326,000 -2,236,000 -2,205,000 -2,327,000 -2,150,000 -1,749,000 -1,863,000 -1,939,000 -2,130,000 -2,072,000 -2,274,000 -2,428,000 -2,512,000 -2,860,000 -3,378,000 -2,947,000 -2,874,000 -2,900,000 -2,811,000 -2,882,000 -2,926,000 -2,470,000 -2,013,000 -2,059,000 -1,932,000 -1,706,000 -1,389,000 -1,315,000 -1,376,000 -1,296,000 -1,231,000 -1,247,000 -1,217,000 -1,157,000                                           
      other
    -1,152,000 -180,000 847,000 578,000 -851,000 -240,000 862,000 -781,000 -28,199,000 1,755,000 89,000 5,038,000 1,780,000 1,452,000 -189,000 -2,807,000 -826,000 1,156,000 338,000 1,111,000 1,192,000 1,965,000 1,500,000 2,696,000 -3,862,000 485,000 -6,734,000 -445,000 -591,000 -15,120,000 -714,000 -1,123,000 -2,201,000 884,000 1,079,000 505,000 647,000 916,000 1,091,000 571,000 366,000 369,000 -613,000 197,000 400,000 2,163,000 234,000 950,000 365,000 1,115,000 1,328,000 366,000 1,083,000 -76,000 997,000  451,000 1,074,000  281,000 2,610,000 848,000 1,346,000  668,000 379,000 2,035,000 1,313,000 -1,082,000 -2,196,000 -681,000 18,000 -511,000 601,000 800,000 175,000 831,000 -1,000 932,000 755,000 135,000 -54,000 745,000 -279,000 -253,000 
      income before income taxes
    -1,334,000             52,879,000 114,970,000 133,037,000 92,269,000 86,199,000 86,150,000 73,458,000 31,347,000 30,199,000 39,178,000 20,734,000 2,385,000 -12,027,000 23,342,000 33,560,000 6,596,000 20,670,000 53,991,000 734,000 8,991,000 16,020,000 24,068,000 24,135,000 -12,647,000 1,096,000 20,555,000 16,381,000 -9,745,000 6,867,000 32,046,000 32,909,000 912,000 19,640,000 32,556,000 27,371,000  13,895,000 21,004,000 7,865,000   11,776,000 6,084,000  1,934,000 19,073,000 8,620,000      -101,085,000 -9,893,000 -25,525,000 -29,094,000 16,757,500 26,097,000 26,812,000 14,121,000      10,053,000 66,520,000 38,384,000 17,324,000 45,416,000 32,324,000 7,472,000 
      income tax provision
    -297,000 -2,439,000 14,234,000 10,159,000 1,043,000 8,425,000 36,390,000 2,303,000 -1,765,000 19,016,000 11,963,000 9,074,000 4,698,000 15,542,000 26,128,000 30,576,000 22,700,000 20,711,000 22,459,000 12,477,000 7,986,000 6,285,000 9,774,000 4,854,000 483,000 -6,478,000 7,072,000 9,184,000 1,708,000 5,371,000 13,215,000 -499,000  -20,548,000 9,280,000 8,358,000  -488,000 7,615,000 6,150,000 -3,642,000 1,879,000 12,892,000 12,942,000  4,834,750 12,938,000                                       
      net income
    -1,037,000 -8,116,000 39,274,000 25,809,000 3,131,000 29,035,000 100,314,000 46,924,000 -2,312,000 48,790,000 34,917,000 40,443,000 71,283,000 37,337,000 88,842,000 102,461,000 69,569,000 65,488,000 63,691,000 60,981,000 23,361,000 23,914,000 29,404,000 15,880,000 1,902,000 -5,549,000 16,270,000 24,376,000 4,888,000 15,299,000 40,776,000 1,233,000 9,954,000 36,568,000 14,788,000 15,777,000 -7,407,000 1,584,000 12,940,000 10,231,000 -6,103,000 4,988,000 19,154,000 19,967,000 745,000 14,544,000 19,618,000 17,208,000 -5,193,000 10,346,000 13,982,000 4,878,000 -13,395,000 -7,929,000 6,518,000 11,841,000  1,404,000 12,265,000 5,451,000      -88,673,000 -5,328,000 -15,443,000 -18,157,000 -10,974,000 15,442,000 16,155,000 8,544,000 18,916,000 19,622,000 4,799,000 31,546,000 32,259,000 6,122,000 40,567,000 23,407,000 10,464,000 27,369,000 19,298,000 4,461,000 
      yoy
    -133.12% -127.95% -60.85% -45.00% -235.42% -40.49% 187.29% 16.03% -103.24% 30.67% -60.70% -60.53% 2.46% -42.99% 39.49% 68.02% 197.80% 173.85% 116.61% 284.01% 1128.23% -530.96% 80.73% -34.85% -61.09% -136.27% -60.10% 1876.97% -50.89% -58.16% 175.74% -92.18% -234.39% 2208.59% 14.28% 54.21% 21.37% -68.24% -32.44% -48.76% -919.19% -65.70% -2.37% 16.03% -114.35% 40.58% 40.31% 252.77% -61.23% -230.48% 114.51% -58.80%  -664.74% -46.86% 117.23%          708.03% -134.50% -195.59% -312.51% -158.01% -21.30% 236.63% -72.92% -41.36% 220.52% -88.17% 34.77% 208.29% -77.63% 110.21% 424.70%     
      qoq
    -87.22% -120.67% 52.17% 724.31% -89.22% -71.06% 113.78% -2129.58% -104.74% 39.73% -13.66% -43.26% 90.92% -57.97% -13.29% 47.28% 6.23% 2.82% 4.44% 161.04% -2.31% -18.67% 85.16% 734.91% -134.28% -134.11% -33.25% 398.69% -68.05% -62.48% 3207.06% -87.61% -72.78% 147.28% -6.27% -313.00% -567.61% -87.76% 26.48% -267.64% -222.35% -73.96% -4.07% 2580.13% -94.88% -25.86% 14.01% -431.37% -150.19% -26.00% 186.63% -136.42% 68.94% -221.65% -44.95%   -88.55% 125.00%       1564.28% -65.50% -14.95% 65.45% -171.07% -4.41% 89.08% -54.83% -3.60% 308.88% -84.79% -2.21% 426.94% -84.91% 73.31% 123.69% -61.77% 41.82% 332.59%  
      earnings per common share
                                                                                         
      basic
    -50             1,540 3,610 4,160 2,820 2,590 2,480 2,380 920 940 1,150 620 70 -220 640 950 190 590 1,580 50 390 1,420 570 610  60 500 390 -240 190 730 760 30 530 720 630  390 520 180   240 440  50 460 200                          
      diluted
    -50             1,510 3,500 4,000 2,680 2,470 2,380 2,270 870 900 1,110 610 70 -210 620 920 180 570 1,520 50 370 1,380 560 600  70 490 390 -240 190 720 740 30 530 720 630  390 520 180   240 440  50 460 200                          
      average common shares outstanding
                                                                             24,820,079 24,769,569 24,828,355 25,128,232 25,224,486 25,240,479 25,174,584 25,296,462 25,317,178 25,067,784 24,951,173 24,984,285 
      basic
    22,338,397,000 -114,613,000 22,718,292,000 22,944,228,000 23,198,805,000 -48,138,000 23,624,761,000 23,618,318,000 23,561,309,000 -100,648,000 24,004,255,000 24,064,882,000 24,288,138,000 -55,501,000 24,605,228,000 24,607,362,000 24,710,685,000 -87,703,000 25,632,805,000 25,586,353,000 25,454,921,000 6,446,000 25,470,094,000 25,463,559,000 25,390,377,000 -14,836,000 25,527,982,000 25,554,286,000 25,570,415,000 9,301,000 25,697,509,000 25,670,325,000 25,642,871,000 -15,561,000 25,671,535,000 25,767,791,000 25,684,475,000 -27,622,000 25,724,550,000 25,791,026,000 25,822,522,000 -19,751,000 26,009,344,000 26,021,874,000 26,051,038,000 13,700,000 26,054,678,000 26,005,105,000 25,876,928,000 24,021,000 25,736,810,000 25,694,327,000 25,638,333,000 28,783,000 25,613,315,000 25,544,455,000 25,455,607,000 14,899,000 25,421,887,000 25,411,339,000 25,296,854 21,045 25,199,123 25,182,579 25,088,473 5,033 25,047,975 25,043,815 25,038,626 6,239,051.25 25,013,314 24,968,217 24,873,651             
      diluted
    22,338,397,000 -104,531,000 22,811,670,000 23,008,707,000 23,272,766,000 -102,872,000 23,690,120,000 23,919,613,000 23,561,309,000 -122,376,000 24,525,258,000 24,672,948,000 25,057,726,000 -121,717,000 25,372,755,000 25,596,031,000 25,911,200,000 -100,255,000 26,770,146,000 26,910,796,000 26,930,402,000 132,577,000 26,592,457,000 26,217,957,000 26,246,800,000 -11,613,000 26,416,595,000 26,431,592,000 26,512,349,000 -9,428,000 26,795,659,000 26,699,549,000 26,596,376,000 51,007,000 26,393,359,000 26,291,641,000 25,684,475,000 -7,162,000 26,211,524,000 26,246,868,000 25,822,522,000 -39,673,000 26,508,482,000 26,593,451,000 26,588,518,000 13,604,000 26,054,678,000 26,005,105,000 25,876,928,000 24,021,000 25,736,810,000 25,694,327,000 25,638,333,000 28,783,000 25,613,315,000 25,544,455,000 25,455,607,000 14,899,000 25,421,887,000 25,411,942,000 25,296,854 21,045 25,199,123 25,182,579 25,088,473 5,033 25,047,975 25,043,815 25,038,626 6,318,756 25,382,786 25,325,978 25,093,540             
      income from continuing operations before income taxes
     -10,555,000 53,508,000 35,968,000 4,174,000 37,460,000 136,704,000 49,227,000 -4,677,000 67,806,000 46,890,000 48,674,000 23,545,000                                                              32,154,000 7,866,000 51,660,000 47,361,000        
      net income from continuing operations
     -8,116,000 39,274,000 25,809,000 3,131,000 29,035,000 100,314,000 46,924,000 -2,912,000 48,790,000 34,927,000 39,600,000 18,847,000                                                                         
      income from discontinued operations, net of tax
            600,000  -10,000 843,000 52,436,000                                                                         
      basic earnings per common share
                2,930                                                                         
      continuing operations
     -340 1,730 1,120 130 1,240 4,250 1,990 -120 2,050 1,460 1,650 780                                                                         
      discontinued operations
            30 10  40 2,160                                                                         
      diluted earnings per common share
                2,840                                                                         
      cash dividends declared per common share
                     80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 80 60 60 60 60 30 30 30 30 30 30 30 30 30 30 30 30 30 30 0.03 0.03 0.03 0.03                   0.12   
      total other income
                                    -3,734,000 -660,000 -281,000  -394,000 -115,000 185,000 -273,000 -480,000         393,000 502,000                                   
      income tax benefit
                                    -963,000    -5,240,000        167,000   10,163,000  3,549,000 7,022,000 2,987,000   5,258,000                               
      total other costs
                                       -599,000      -579,000 -1,392,000                                           
      loss per common share
                                                                                         
      basic
                                        -290            -200    -520    -710                             
      diluted
                                        -290            -200    -520    -710                             
      interest expense and other related financing costs
                                                     -904,000 -993,000      1,340,000         -1,348,000 -357,000 -344,000 -341,000 -300,000 -206,000 -336,000 -339,000 -290,000 -308,000 -287,000 -292,000 -299,000 -243,000 -297,000 -1,089,000 -389,000    
      operating revenues
                                                    577,904,000 578,550,000 623,414,000 576,899,000 520,687,000 537,043,000 577,546,000 510,543,000 440,867,000 463,240,000 510,887,000 498,550,000 434,931,000 441,096,000 445,531,000 411,347,000 359,889,000 371,632,000 398,957,000 362,635,000 339,677,000 391,212,000 495,815,000 498,514,000 447,511,000 479,815,000 458,209,000 422,619,000 507,307,000 479,254,000 450,557,000 489,885,000 456,660,000 417,278,000 461,888,000 424,488,000 374,844,000 
      operating expenses and costs
                                                     428,857,750 602,912,000 568,482,000 544,037,000 548,058,000 565,313,000 503,342,000 463,854,000 461,605,000 489,769,000 489,552,000 456,923,000 447,790,000 447,307,000 422,157,000 395,155,000 472,202,000 411,194,000 389,932,000 368,278,000 407,014,000 470,323,000 472,832,000 434,359,000 451,629,000 427,894,000 415,841,000 457,519,000 432,799,000 442,201,000 439,802,000 417,919,000 399,853,000 417,663,000 392,498,000 366,554,000 
      less: noncontrolling interest in net income of subsidiary
                                                               153,000 21,000 -8,000 164,000 96,000 20,000 43,000 245,000                   
      net income attributable to arkansas best corporation
                                                         -7,929,000 6,518,000 11,841,000 -18,162,000 1,404,000 12,265,000 5,298,000 -12,808,000 -3,108,000 -749,000 -7,444,000 -21,391,000 -88,716,000 -5,573,000                   
      total comprehensive income
                                                         1,348,250 8,308,000 13,524,000                              
      total comprehensive loss
                                                            -16,439,000                             
      income taxes
                                                                                         
      current benefit
                                                             -9,328,000 7,041,000 3,132,000      -7,539,000 -3,302,000 -2,805,000 -19,408,000                 
      deferred benefit
                                                               37,000   1,479,000   -4,873,000 -1,263,000 -7,277,000  -455,250 2,186,000               
      loss per share
                                                                                         
      basic
                                                                -0.51 -0.295 -0.03 -0.3 -0.85                     
      diluted
                                                                                         
      federal and state income taxes
                                                                                         
      cash dividends declared and paid per common share
                                                                    0.03 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15          
      earnings per share
                                                                                         
      basic
                                                                     -3.54 -0.23 -0.62 -0.73 0.403 0.62 0.65 0.34             
      diluted
                                                                     -3.54 -0.23 -0.62 -0.73 0.398 0.61 0.64 0.34             
      deferred provision
                                                                        8,471,000                 
      current provision
                                                                         -20,538,000 8,469,000               
      current
                                                                           15,040,000 5,201,000 12,318,000 12,397,000 1,776,000 20,966,000 19,120,000 6,910,000 25,662,000 19,345,000 12,547,000 15,725,000 11,453,000 2,305,000 
      deferred
                                                                           -4,383,000 376,000 -1,260,000 135,000 1,291,000 -852,000 -721,000 -2,979,000 291,000 -4,368,000 -5,687,000 2,322,000 1,573,000 706,000 
      short-term investment income
                                                                             1,477,000 1,347,000 1,200,000 1,333,000 1,206,000 1,008,000 629,000 549,000 342,000    
      income from continuing operations, before income taxes
                                                                             29,974,000            
      income from continuing operations
                                                                             18,916,000 19,622,000 4,799,000 31,546,000 28,962,000        
      discontinued operations, net of tax
                                                                                         
      income from operations
                                                                                 234,000        
      gain from disposal
                                                                                 3,063,000        
      basic earnings per share:
                                                                                         
      income from discontinued operations
                                                                                 0.13        
      average common shares outstanding
                                                                             24,820,079 24,769,569 24,828,355 25,128,232 25,224,486 25,240,479 25,174,584 25,296,462 25,317,178 25,067,784 24,951,173 24,984,285 
      diluted earnings per share:
                                                                                         
      cash dividends paid per common share
                                                                                0.15 0.15 0.15 0.15 0.12 0.12  0.12 0.12 
      basic:
                                                                                         
      net income per share
                                                                                  0.24 1.61 0.93 0.41 1.09 0.77 0.18 
      diluted:
                                                                                         
      net gain on sales of property and other
                                                                                   15,350,000 48,000     
      fair value changes and payments on interest rate swap
                                                                                      300,000 587,000 -438,000 
      net income on sales of property and other
                                                                                         
      net gains on sales of property and other
                                                                                      248,000 241,000  
      gain on sale – wingfoot
                                                                                         
      interest expense
                                                                                      -102,000 -215,000 -71,000 
      other income - sum
                                                                                       334,000 -818,000 
      federal and state income taxes - sum
                                                                                       13,026,000 3,011,000 
      net losses on sales of property and other
                                                                                        -56,000 
      net income per common share
                                                                                         
    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 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2004-06-30 2004-03-31 
                                                                          
        assets
                                                                          
        current assets
                                                                          
        cash and cash equivalents
      64,057,000 102,030,000 120,604,000 114,874,000 74,122,000 127,444,000 150,461,000 215,590,000 172,855,000 262,226,000 251,503,000 187,286,000 203,319,000 158,372,000 155,531,000 127,058,000 64,108,000 76,620,000 408,207,000 362,619,000 301,542,000 303,954,000 267,645,000 406,290,000 352,165,000 201,909,000 183,838,000 181,731,000 138,399,000 190,186,000 177,436,000 159,307,000 124,652,000 120,772,000 109,034,000 102,569,000 82,253,000 114,280,000 130,395,000 152,236,000 134,788,000 164,973,000 191,646,000 192,016,000 166,022,000 157,042,000 159,382,000 129,150,000 95,728,000 105,354,000 107,611,000 88,553,000 90,702,000 71,341,000 53,618,000 138,516,000 141,295,000 137,099,000 114,834,000 86,784,000 62,318,000 58,001,000 100,880,000 157,453,000 205,900,000 196,971,000 17,129,000 8,023,000 
        short-term investments
      22,390,000 22,204,000 12,023,000 24,801,000 24,552,000 29,759,000 40,639,000 44,865,000 68,065,000 67,842,000 89,326,000 153,116,000 162,487,000 167,662,000 145,758,000 76,802,000 37,024,000 48,339,000 60,289,000 59,967,000 59,316,000 65,408,000 83,411,000 167,719,000 178,810,000 116,579,000 124,257,000 117,657,000 116,225,000 106,806,000 75,879,000 68,013,000 54,669,000 56,401,000 57,052,000 54,148,000 56,984,000 56,838,000 59,346,000 64,081,000 69,608,000 61,597,000 69,567,000 53,836,000 45,980,000 45,909,000 43,858,000 36,015,000 35,960,000  28,573,000 29,879,000 29,054,000 47,732,000 46,619,000 45,167,000 33,960,000 30,992,000 37,579,000          
        accounts receivable, less allowances
      425,461,000 370,969,000 408,610,000 402,321,000 414,133,000 394,838,000 422,861,000 429,511,000 433,717,000 430,122,000 469,490,000 429,570,000 470,440,000 580,515,000 627,092,000 659,672,000 676,200,000 582,344,000 425,006,000 360,498,000 344,242,000 320,870,000 323,760,000 273,135,000 278,783,000 282,579,000 292,935,000 296,090,000 294,853,000 297,051,000 323,212,000 309,112,000 289,366,000 279,074,000 301,941,000 282,856,000 258,931,000 260,643,000 256,316,000 238,775,000 226,796,000 236,097,000 242,656,000 245,039,000 230,715,000 228,056,000 243,099,000 236,201,000 221,870,000 202,540,000 212,946,000 206,168,000 180,631,000 209,460,000 201,668,000 150,183,000 149,665,000 165,259,000 170,660,000 161,726,000 120,226,000 110,880,000 111,452,000 148,414,000 157,335,000 146,393,000 151,052,000 133,041,000 
        other accounts receivable, less allowances
      29,301,000 26,295,000 23,538,000 23,357,000 25,027,000 36,055,000 13,247,000 11,846,000 11,389,000 52,124,000 10,984,000 11,160,000 11,485,000 11,867,000 11,472,000 18,612,000 22,109,000 13,094,000 13,827,000 13,284,000 13,766,000 14,343,000 14,464,000 16,812,000 15,276,000 18,774,000 18,122,000 17,207,000 16,925,000 19,146,000 17,992,000 19,548,000 19,262,000 19,491,000 15,337,000 19,052,000 18,687,000 13,334,000 8,927,000 7,346,000 6,854,000 6,718,000 7,119,000 7,083,000 6,289,000 6,582,000 6,144,000 7,569,000 6,940,000 7,272,000 9,532,000 6,615,000 6,539,000 7,312,000 7,541,000 7,556,000 7,538,000 6,226,000 7,415,000 7,664,000 6,006,000 6,716,000 6,611,000 7,651,000 7,108,000 8,037,000   
        prepaid expenses
      49,284,000 49,399,000 35,365,000 38,115,000 46,666,000 47,860,000 32,400,000 31,835,000 39,232,000 37,034,000 30,957,000 33,244,000 41,061,000 40,240,000 32,280,000 32,353,000 42,688,000 40,104,000 30,120,000 36,355,000 40,356,000 37,774,000 29,562,000 28,928,000 33,806,000 30,377,000 25,365,000 28,546,000 31,064,000 25,304,000 21,291,000 19,912,000 24,891,000 22,183,000 22,156,000 24,668,000 27,012,000 22,124,000 19,622,000 21,558,000 24,725,000 20,801,000 18,557,000 19,219,000 22,599,000 20,906,000 17,542,000 17,635,000 22,178,000 19,016,000 15,980,000 16,346,000 17,355,000 13,808,000 15,818,000 12,984,000 11,363,000 9,114,000 9,422,000 12,098,000 9,907,000 12,632,000 10,670,000 8,956,000 10,007,000 13,346,000 12,557,000 14,412,000 
        prepaid and refundable income taxes
      42,026,000 45,405,000 46,066,000 23,277,000 29,106,000 28,641,000 21,421,000 22,555,000 22,084,000 24,319,000 26,534,000 39,230,000 16,351,000 19,239,000 16,010,000 10,310,000 9,010,000 9,654,000 9,258,000 5,871,000 4,604,000 11,397,000 6,163,000 4,236,000 6,231,000 9,439,000 8,186,000 5,237,000 4,610,000 1,726,000 6,726,000 4,665,000 10,267,000 12,296,000 4,673,000 10,098,000 11,008,000 9,909,000 13,934,000 20,386,000 28,082,000 18,134,000 3,057,000 2,592,000 12,657,000 9,920,000 2,262,000 2,862,000 4,205,000 2,061,000 2,186,000 6,232,000 5,681,000 4,285,000 6,317,000 6,962,000 6,905,000 2,106,000 2,209,000 6,297,000 24,214,000 36,621,000       
        other
      10,713,000 9,761,000 10,925,000 11,423,000 11,557,000 11,045,000 10,880,000 11,011,000 11,136,000 11,116,000 11,342,000 11,584,000 11,887,000 11,888,000 9,885,000 10,750,000 9,440,000 5,898,000 6,419,000 4,937,000 4,893,000 4,422,000 5,235,000 4,923,000 4,460,000 4,745,000 5,285,000 4,982,000 4,466,000 9,007,000 9,038,000 9,509,000 9,029,000 12,132,000 8,834,000 8,293,000 8,226,000 4,300,000 4,275,000 5,220,000 5,012,000 3,936,000 5,144,000 5,072,000 4,907,000 4,968,000 7,489,000 8,136,000 8,144,000 6,952,000 8,882,000 7,306,000 7,185,000 8,599,000 9,805,000 5,958,000 6,186,000 5,251,000 5,221,000 5,765,000 6,610,000 6,327,000 6,982,000 8,178,000 8,013,000 7,664,000 3,158,000 3,196,000 
        total current assets
      643,232,000 626,063,000 657,131,000 638,168,000 625,163,000 675,642,000 691,909,000 767,213,000 758,478,000 884,783,000 890,136,000 865,190,000 917,030,000 989,783,000 998,028,000 935,557,000 860,579,000 776,053,000 953,126,000 843,531,000 768,719,000 758,168,000 730,240,000 902,043,000 869,531,000 664,402,000 657,988,000 651,450,000 606,542,000 649,226,000 631,574,000 590,066,000 532,136,000 522,349,000 519,027,000 501,684,000 464,063,000 521,989,000 532,874,000 547,879,000 533,760,000 552,083,000 580,482,000 561,905,000 529,023,000 514,989,000 524,513,000 477,224,000 432,946,000 418,485,000 434,650,000 405,293,000 386,050,000 408,039,000 398,540,000 430,513,000 445,086,000 445,401,000 434,617,000 409,189,000 395,297,000 397,124,000 408,190,000 443,192,000 446,900,000 411,259,000 212,740,000 188,215,000 
        property, plant and equipment
      1,135,556,000 1,143,437,000 1,150,297,000 1,113,157,000 1,063,386,000 1,066,046,000 1,049,392,000 971,039,000 937,830,000 914,824,000 862,090,000 828,533,000 805,300,000 810,520,000 745,717,000 709,619,000 692,374,000 695,921,000 684,307,000 665,944,000 662,698,000 678,690,000 678,057,000 660,806,000 663,460,000 683,592,000 680,074,000 651,949,000 622,976,000 631,188,000 626,946,000 591,217,000 574,163,000 591,164,000 569,658,000 555,248,000 523,624,000 532,526,000 529,939,000 507,373,000 482,606,000 483,047,000 458,939,000 424,447,000 405,742,000 409,850,000 411,873,000 402,530,000 384,558,000 394,397,000 399,536,000                  
        land and structures
      570,752,000 566,071,000 550,883,000 536,791,000 530,957,000 520,119,000 520,894,000 507,194,000 491,555,000 460,068,000 430,263,000 421,821,000 418,011,000 406,620,000 361,705,000 356,149,000 352,420,000 350,694,000 347,771,000 345,829,000 344,282,000 342,178,000 346,322,000 344,951,000 343,527,000 342,122,000 339,298,000 339,255,000 340,764,000 339,640,000 338,046,000 338,902,000 338,346,000 344,224,000 340,889,000 338,228,000 330,909,000 305,507,000 296,324,000 287,545,000 280,510,000 273,839,000 269,317,000 267,046,000 264,740,000 251,836,000 250,816,000 249,196,000 248,310,000 245,805,000 245,207,000 245,148,000 243,699,000 243,395,000 242,170,000 242,665,000 242,120,000 241,310,000 241,082,000 244,359,000 239,849,000 237,459,000 235,861,000 234,207,000 231,768,000 231,469,000 219,362,000 218,839,000 
        revenue equipment
      1,199,648,000 1,201,386,000 1,223,311,000 1,200,219,000 1,160,332,000 1,166,161,000 1,170,045,000 1,143,985,000 1,119,446,000 1,126,055,000 1,094,183,000 1,062,854,000 1,039,771,000 1,038,832,000 1,014,369,000 993,008,000 981,317,000 980,283,000 965,263,000 933,264,000 914,140,000 916,760,000 912,924,000 891,029,000 885,949,000 896,020,000 902,289,000 888,588,000 856,370,000 858,251,000 857,846,000 818,674,000 790,685,000 793,523,000 773,859,000 763,567,000 742,394,000 743,860,000 738,350,000 723,312,000 700,078,000 699,844,000 689,786,000 655,013,000 628,136,000 633,455,000 629,791,000 617,396,000 588,935,000 589,902,000 591,367,000 590,445,000 589,729,000 598,947,000 595,542,000 565,385,000 569,303,000 568,639,000 551,411,000 531,837,000 504,357,000 494,565,000 514,503,000 523,880,000 519,979,000 505,571,000 382,607,000 373,656,000 
        service, office, and other equipment
      362,080,000 363,340,000 362,243,000 356,319,000 352,383,000 351,907,000 353,880,000 326,633,000 318,252,000 319,466,000 313,062,000 309,952,000 303,698,000 302,891,000 291,595,000 276,965,000 259,201,000 251,085,000 243,601,000 239,462,000 235,727,000 233,810,000 233,689,000 232,058,000 230,163,000 233,354,000 229,691,000 218,131,000 206,959,000 199,230,000 192,241,000 190,109,000 189,055,000 179,950,000 168,627,000 161,555,000 155,618,000 154,119,000 156,536,000 151,520,000 148,675,000 145,286,000 142,536,000 137,296,000 135,156,000 136,145,000 128,645,000 125,818,000 124,273,000 124,303,000 122,057,000 120,848,000 119,456,000 116,913,000               
        software
      194,240,000 190,673,000 187,197,000 183,520,000 185,526,000 182,396,000 182,035,000 177,933,000 176,988,000 173,354,000 169,434,000 167,292,000 170,523,000 180,929,000 178,145,000 179,195,000 180,641,000 175,989,000 170,045,000 170,528,000 169,004,000 163,193,000 158,454,000 155,411,000 154,749,000 151,068,000 146,789,000 143,181,000 142,062,000 138,517,000 133,816,000 131,139,000 132,088,000 129,589,000 127,109,000 124,135,000 123,857,000 120,877,000 134,312,000 131,328,000 130,318,000 127,010,000 122,874,000 120,256,000 119,431,000 116,112,000 113,770,000 111,248,000 112,896,000 110,998,000 109,111,000 107,195,000 103,164,000 100,896,000 99,310,000              
        leasehold improvements
      43,424,000 41,531,000 37,175,000 35,065,000 33,368,000 32,263,000 29,648,000 27,675,000 25,173,000 24,429,000 26,062,000 26,240,000 24,693,000 23,466,000 20,865,000 20,189,000 17,226,000 16,931,000 15,970,000 15,835,000 15,534,000 15,156,000 14,064,000 11,821,000 11,022,000 10,383,000 10,212,000 10,058,000 9,766,000 9,365,000 9,177,000 9,131,000 8,948,000 8,888,000 9,228,000 9,008,000 8,993,000 27,337,000 27,040,000 25,955,000 25,645,000 25,419,000 24,962,000 24,649,000 24,496,000 24,377,000 23,941,000 23,837,000 23,637,000 23,582,000 23,524,000 23,442,000 23,272,000 22,943,000 23,000,000 21,758,000 21,426,000 21,258,000 21,198,000 22,049,000 21,625,000 21,529,000 21,697,000 21,163,000 20,513,000 20,171,000 13,369,000 13,148,000 
        property, plant and equipment - sum
      2,370,144,000 2,363,001,000 2,360,809,000 2,311,914,000 2,262,566,000 2,252,846,000 2,256,502,000 2,183,420,000 2,131,414,000 2,103,372,000 2,033,004,000 1,988,159,000 1,956,696,000 1,952,738,000 1,866,679,000 1,825,506,000 1,790,805,000 1,774,982,000 1,742,650,000 1,704,918,000 1,678,687,000 1,671,097,000 1,665,453,000 1,635,270,000 1,625,410,000 1,632,947,000 1,628,279,000 1,599,213,000                                       725,382,000 714,165,000 
        less allowances for depreciation and amortization
      1,234,588,000 1,219,564,000 1,210,512,000 1,198,757,000 1,199,180,000 1,186,800,000 1,207,110,000 1,212,381,000 1,193,584,000 1,188,548,000 1,170,914,000 1,159,626,000 1,151,396,000 1,142,218,000 1,120,962,000 1,115,887,000 1,098,431,000 1,079,061,000 1,058,343,000 1,038,974,000 1,015,989,000 992,407,000 987,396,000 974,464,000 961,950,000 949,355,000 948,205,000 947,264,000 932,945,000 913,815,000 904,180,000 896,738,000 884,959,000 865,010,000 850,054,000 841,245,000 838,147,000 819,174,000 822,623,000 812,287,000 802,620,000 788,351,000 790,536,000 779,813,000 766,217,000 752,075,000 735,090,000 724,965,000 713,493,000 700,193,000 691,730,000 673,074,000 635,292,000 622,888,000 614,335,000 605,150,000 592,171,000 590,418,000 582,686,000 569,027,000 486,484,000 473,566,000 473,010,000 469,790,000 465,589,000 451,757,000 370,789,000 369,415,000 
        goodwill
      304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 304,753,000 305,382,000 307,252,000 299,075,000 299,008,000 300,337,000 86,368,000 86,368,000 88,320,000 88,320,000 88,320,000 88,320,000 88,320,000 88,320,000 108,320,000 108,320,000 108,320,000 108,320,000 108,320,000 108,320,000 108,320,000 108,320,000 108,981,000 108,981,000 108,981,000 108,875,000 110,487,000 96,572,000 96,577,000 96,465,000 81,278,000 81,258,000 80,696,000 77,078,000 77,078,000 77,749,000 76,448,000 76,448,000 76,448,000 76,448,000 73,189,000 79,051,000 82,604,000      66,530,000 63,887,000 63,897,000 63,960,000 63,975,000 63,970,000   
        intangible assets
      66,873,000 69,391,000 79,227,000 82,449,000 85,449,000 88,615,000 91,627,000 94,740,000 97,940,000 101,150,000 104,288,000 107,467,000 110,622,000 113,796,000 116,922,000 120,145,000 123,363,000 126,580,000 52,135,000 53,084,000 54,028,000 54,981,000 56,016,000 56,915,000 57,873,000 58,832,000 65,583,000 66,700,000 67,820,000 68,949,000 70,075,000 71,206,000 72,336,000 73,469,000 77,103,000 78,237,000 79,371,000 80,507,000 82,068,000 75,300,000 76,300,000 76,787,000 70,410,000 71,270,000 72,862,000 72,809,000 73,919,000 74,462,000 74,344,000 75,387,000 76,431,000 77,474,000 79,561,000 80,604,000 71,222,000              
        operating right-of-use assets
      215,902,000 220,157,000 226,033,000 229,905,000 228,684,000 192,753,000 193,467,000 186,779,000 174,987,000 169,999,000 164,082,000 194,597,000 189,610,000 166,515,000 164,654,000 124,086,000 125,988,000 106,686,000 105,219,000 109,860,000 111,412,000 115,195,000 112,568,000 81,069,000 73,324,000 68,470,000 67,404,000 68,810,000 68,737,000                                        
        deferred income taxes
      15,684,000 9,303,000 7,825,000 9,324,000 9,273,000 9,536,000 8,293,000 9,974,000 10,032,000 8,140,000 7,618,000 6,918,000 7,287,000 6,342,000 5,563,000 5,655,000 5,324,000 5,470,000 6,544,000 6,419,000 6,289,000 6,158,000 6,975,000 7,507,000 8,145,000 7,725,000 6,128,000 6,296,000 6,905,000 7,468,000 5,967,000 6,226,000 6,095,000 5,965,000 2,747,000 2,722,000 3,064,000 39,599,000 39,097,000 37,316,000 36,510,000 38,443,000 41,349,000 35,661,000 38,468,000 40,220,000 43,352,000 38,271,000 36,018,000 37,482,000 47,038,000 42,293,000 39,245,000 35,704,000 36,129,000 33,643,000 35,481,000 37,031,000 35,596,000 34,853,000 36,967,000 35,409,000 36,079,000 36,602,000 37,362,000 36,097,000 28,844,000 27,847,000 
        other long-term assets
      76,396,000 79,558,000 75,915,000 89,680,000 90,176,000 92,386,000 74,739,000 74,031,000 73,123,000 101,445,000 104,479,000 106,644,000 96,991,000 101,948,000 101,978,000 99,569,000 103,063,000 101,629,000 74,729,000 76,267,000 76,549,000 77,496,000 74,055,000 74,100,000 73,703,000 79,866,000 85,135,000 80,402,000 78,357,000 74,080,000 74,800,000 65,261,000 65,033,000 64,374,000 66,916,000 65,389,000 65,380,000 66,095,000 65,500,000                              
        total assets
      2,458,396,000 2,452,662,000 2,501,181,000 2,467,436,000 2,406,884,000 2,429,731,000 2,414,180,000 2,408,529,000 2,357,143,000 2,485,094,000 2,437,446,000 2,414,102,000 2,431,593,000 2,494,286,000 2,440,114,000 2,293,706,000 2,209,699,000 2,112,676,000 1,962,428,000 1,841,473,000 1,768,015,000 1,779,008,000 1,746,231,000 1,870,760,000 1,834,356,000 1,651,207,000 1,670,632,000 1,633,927,000 1,559,657,000 1,539,231,000 1,517,682,000 1,432,296,000 1,358,083,000 1,365,641,000 1,344,432,000 1,312,261,000 1,244,483,000 1,309,992,000 1,320,868,000 1,283,174,000 1,245,231,000 1,262,909,000 1,244,286,000 1,192,048,000 1,141,699,000 1,127,622,000 1,140,567,000 1,085,063,000 1,021,645,000 1,017,326,000 1,038,123,000                  
        liabilities and stockholders’ equity
                                                                          
        current liabilities
                                                                          
        accounts payable
      164,240,000 154,487,000 164,266,000 176,903,000 166,869,000 172,763,000 204,696,000 222,303,000 209,908,000 214,004,000 245,899,000 245,998,000 253,578,000 317,541,000 329,887,000 346,051,000 340,966,000 311,401,000 227,893,000 204,124,000 177,885,000 170,898,000 162,021,000 140,632,000 127,625,000 134,374,000 160,054,000 166,829,000 145,590,000 143,785,000 154,484,000 176,034,000 139,830,000 129,099,000 147,889,000 142,373,000 130,750,000 133,301,000 149,971,000 145,423,000 139,607,000 130,869,000 144,401,000 147,781,000 115,566,000 104,230,000 135,022,000 121,195,000 110,364,000 89,091,000 95,609,000 94,770,000 84,292,000 90,245,000 94,561,000 67,647,000 66,517,000 74,656,000 82,950,000 69,324,000 63,991,000 51,231,000 51,646,000 66,596,000 69,956,000 62,330,000 70,818,000 62,070,000 
        income taxes payable
      8,508,000   3,630,000   4,808,000  8,000 10,410,000 1,390,000  19,460,000 16,630,000 7,668,000 17,110,000 8,364,000 12,087,000 6,535,000 7,357,000  316,000 5,000 3,181,000 31,000 12,000 198,000 1,942,000 241,000 1,688,000 138,000 511,000 93,000 324,000 167,000       91,000 8,489,000 4,869,000 257,000 527,000 16,809,000 6,947,000 162,000 1,782,000 2,868,000 162,000 59,000 430,000 220,000 108,000 169,000 5,787,000 348,000 129,000 164,000 165,000 758,000 3,540,000 4,501,000 545,000   
        accrued expenses
      388,361,000 378,125,000 392,088,000 368,623,000 356,702,000 394,880,000 360,738,000 332,258,000 313,494,000 378,029,000 322,809,000 299,339,000 278,658,000 341,822,000 331,610,000 304,425,000 276,888,000 305,851,000 291,586,000 260,185,000 235,161,000 246,746,000 249,172,000 217,020,000 217,678,000 228,749,000 234,863,000 228,994,000 211,533,000 243,111,000 233,076,000 221,880,000 202,656,000 211,237,000 202,408,000 200,052,000 190,829,000 190,024,000 187,822,000 184,141,000 176,918,000 188,727,000 193,997,000 187,821,000 176,737,000 194,674,000 187,682,000 179,141,000 171,433,000 173,622,000 181,197,000 170,414,000 158,668,000 159,378,000 163,159,000 159,295,000 151,887,000 156,537,000 157,589,000 153,724,000 155,183,000 150,455,000 147,540,000 161,876,000 168,611,000 163,801,000 140,625,000 131,676,000 
        current portion of long-term debt
      94,091,000 87,882,000 78,631,000 77,549,000 66,692,000 63,978,000 62,199,000 58,615,000 63,179,000 66,948,000 66,862,000 64,882,000 64,491,000 66,252,000 63,521,000 56,049,000 89,766,000 50,615,000 67,897,000 66,644,000 66,064,000 67,105,000 65,887,000 59,050,000 56,977,000 57,305,000 50,197,000 47,205,000 48,809,000 54,075,000 54,556,000 51,562,000 56,057,000 61,930,000 62,837,000 62,588,000 59,995,000 64,143,000 61,251,000 55,406,000 45,905,000 44,910,000 35,050,000 24,024,000 22,639,000 25,256,000 40,088,000 36,192,000 30,725,000  35,353,000 37,030,000 43,044,000 54,024,000 46,282,000 30,142,000 24,262,000 21,179,000 15,386,000 14,156,000 139,000 162,000 159,000 238,000 236,000 233,000 379,000 366,000 
        current portion of operating lease liabilities
      36,828,000 36,394,000 35,470,000 34,697,000 34,080,000 34,364,000 33,127,000 32,674,000 31,986,000 32,172,000 31,414,000 31,047,000 28,466,000 26,225,000 24,686,000 24,534,000 24,127,000 22,740,000 21,765,000 21,950,000 21,632,000 21,482,000 20,431,000 19,769,000 20,542,000 20,265,000 18,492,000 18,273,000 17,678,000                                        
        total current liabilities
      692,028,000 656,888,000 670,455,000 661,402,000 624,343,000 665,985,000 665,568,000 645,850,000 618,575,000 701,563,000 668,374,000 641,266,000 688,043,000 768,470,000 757,372,000 748,169,000 740,111,000 702,694,000 615,676,000 560,260,000 500,742,000 506,547,000 497,516,000 439,652,000 422,853,000 444,277,000 465,725,000 471,474,000 431,835,000 451,318,000 454,894,000 449,987,000 398,636,000 402,590,000 413,301,000 405,013,000 381,574,000 387,468,000 399,044,000 384,970,000 362,430,000 364,597,000 381,937,000 364,495,000 329,498,000 340,782,000 395,515,000 360,693,000 327,693,000 309,617,000 326,672,000 318,048,000 299,708,000 317,105,000 319,549,000 267,972,000 263,671,000 272,790,000 272,093,000 250,484,000 231,430,000 210,689,000 215,292,000 245,363,000 262,444,000 238,578,000 219,402,000 202,453,000 
        long-term debt, less current portion
      129,559,000 135,974,000 135,469,000 163,850,000 147,528,000 125,156,000 118,312,000 144,972,000 148,992,000 161,990,000 176,296,000 168,105,000 185,961,000 198,371,000 189,798,000 169,356,000 168,912,000 174,917,000 176,545,000 171,075,000 200,773,000 217,119,000 226,037,000 473,850,000 476,945,000 266,214,000 248,223,000 235,001,000 227,649,000 237,600,000 235,970,000 198,070,000 196,425,000 206,989,000 200,181,000 194,730,000 167,075,000 179,530,000 176,363,000 170,044,000 157,485,000 167,599,000 156,553,000 136,821,000 132,837,000 102,474,000 85,735,000 82,967,000 74,355,000  88,893,000 96,946,000 112,941,000 132,355,000 133,796,000 34,795,000 46,750,000 45,900,000 38,160,000 39,059,000 1,657,000 1,423,000 1,457,000 1,498,000 1,538,000 1,577,000 1,551,000 1,760,000 
        operating lease liabilities, less current portion
      199,610,000 204,333,000 210,958,000 215,376,000 214,606,000 189,978,000 192,046,000 185,637,000 174,085,000 176,621,000 171,755,000 174,145,000 170,253,000 147,828,000 146,134,000 104,253,000 106,463,000 88,835,000 88,232,000 92,811,000 94,473,000 97,839,000 96,549,000 65,249,000 56,716,000 52,277,000 52,782,000 54,040,000 54,444,000                                        
        postretirement liabilities, less current portion
      13,695,000 13,696,000 13,400,000 13,380,000 13,378,000 13,361,000 13,269,000 13,264,000 13,318,000 13,319,000 12,167,000 12,169,000 12,169,000 12,196,000 16,681,000 16,694,000 16,710,000 16,733,000 18,506,000 18,514,000 18,518,000 18,555,000 20,486,000 20,448,000 20,411,000                                            
        other long-term liabilities
      31,354,000 34,470,000 33,982,000 34,723,000 32,970,000 39,590,000 39,991,000 37,606,000 34,422,000 40,553,000 38,552,000 37,314,000 34,248,000 154,745,000 134,701,000 132,930,000 130,471,000 135,537,000 38,208,000 35,722,000 33,992,000 37,948,000 35,377,000 36,077,000 35,058,000 38,892,000 38,151,000 37,268,000 36,406,000 44,686,000 40,372,000 38,456,000 12,320,000 15,616,000 16,585,000 15,185,000 15,844,000 16,790,000 15,159,000                              
        commitments and contingencies
                                                                          
        stockholders’ equity
                                                                          
        common stock, 0.01 par value...
      305,000 305,000 305,000 305,000 304,000 304,000 304,000 304,000 300,000 300,000 300,000 300,000 298,000 298,000 297,000 296,000 294,000 294,000 294,000 293,000 291,000 290,000 290,000 290,000 288,000 288,000 288,000 288,000 287,000 287,000 285,000 285,000 285,000 285,000 285,000 285,000 282,000 282,000 281,000 281,000 280,000 279,000 279,000 278,000 277,000 277,000 277,000 277,000 275,000 275,000 274,000 274,000 273,000 273,000 273,000 271,000 271,000 271,000 271,000 270,000         
        additional paid-in capital
      340,201,000 338,083,000 336,484,000 333,798,000 331,944,000 329,575,000 327,335,000 324,645,000 343,102,000 340,961,000 338,368,000 335,397,000 340,481,000 339,582,000 337,113,000 340,035,000 344,429,000 318,033,000 340,315,000 338,263,000 344,542,000 342,354,000 339,908,000 337,942,000 336,064,000 333,943,000 331,773,000 329,388,000 327,762,000 325,712,000 325,533,000 322,895,000 321,265,000 319,436,000 317,677,000 316,334,000 316,802,000 314,916,000 313,794,000 311,924,000 311,199,000 309,653,000 307,939,000 307,268,000 304,570,000 303,045,000 301,365,000 299,631,000 298,635,000  291,445,000 290,355,000 289,711,000 288,468,000 287,678,000 287,478,000 286,408,000 284,991,000 284,771,000 283,236,000 271,454,000 269,500,000 268,396,000 266,892,000 265,436,000 259,927,000 220,589,000 218,928,000 
        retained earnings
      1,480,662,000 1,484,378,000 1,495,194,000 1,458,647,000 1,435,596,000 1,435,250,000 1,409,025,000 1,311,549,000 1,267,444,000 1,272,584,000 1,226,640,000 1,194,610,000 1,157,061,000 1,088,693,000 1,054,294,000 968,417,000 868,905,000 801,314,000 737,820,000 676,179,000 617,256,000 595,932,000 574,053,000 546,689,000 532,858,000 533,187,000 540,778,000 526,551,000 504,225,000 501,389,000 488,158,000 449,442,000 450,267,000 438,379,000 403,868,000 391,143,000 377,444,000 387,161,000 387,646,000 376,780,000 368,636,000 376,827,000 373,936,000 356,360,000 337,971,000 338,810,000 325,910,000 307,115,000 290,723,000 296,735,000 287,204,000 274,027,000 284,157,000 292,893,000 287,182,000 276,149,000 295,108,000 294,501,000 283,034,000 278,533,000 430,020,000 449,356,000 471,360,000 486,181,000 474,586,000 462,277,000 210,385,000 194,081,000 
        treasury stock
      -534,028,000 -526,606,000 -509,169,000 -492,776,000 -473,029,000 -451,039,000 -431,914,000 -407,433,000 -391,458,000 -375,806,000 -350,161,000 -325,515,000 -298,367,000 -284,275,000 -269,390,000 -250,510,000 -235,779,000 -194,273,000 -119,273,000 -119,273,000 -112,174,000 -111,173,000 -110,245,000 -107,740,000 -107,740,000 -104,578,000 -101,583,000 -100,639,000 -98,131,000 -95,468,000 -86,265,000 -86,265,000 -86,265,000 -86,064,000 -86,064,000 -83,656,000 -80,045,000 -80,045,000 -78,129,000 -75,651,000 -73,137,000 -70,535,000 -67,774,000       -57,770,000 -57,770,000  -57,770,000        -57,770,000 -57,770,000 -57,770,000 -57,770,000 -57,770,000 -57,770,000 -13,334,000 -9,683,000 
        accumulated other comprehensive loss
      -614,000                          -7,630,000 -12,429,000 -12,388,000 -14,238,000 -22,620,000 -17,842,000 -20,078,000 -20,574,000 -22,201,000 -22,026,000 -22,807,000 -23,417,000 -28,439,000 -30,843,000 -29,727,000 -27,496,000 -27,585,000       -14,912,000 -21,470,000  -57,372,000        -53,706,000 -55,852,000 -57,507,000 -22,089,000 -24,461,000 -25,254,000 -4,095,000 -4,108,000 
        total stockholders’ equity
      1,286,526,000 1,295,721,000 1,322,918,000 1,300,426,000 1,294,744,000 1,314,362,000 1,307,096,000 1,231,538,000 1,222,733,000 1,242,363,000 1,220,733,000 1,211,361,000 1,205,859,000 1,151,401,000 1,126,292,000 1,063,212,000 983,172,000 929,067,000 961,043,000 898,134,000 851,909,000 828,593,000 802,639,000 775,091,000 759,206,000 763,043,000 763,626,000 743,159,000 721,755,000 717,682,000 705,091,000 668,515,000 665,474,000 651,462,000 613,565,000 602,080,000 591,676,000 598,897,000 595,153,000 582,491,000 577,251,000 588,728,000 586,795,000 579,204,000 557,931,000 560,883,000 551,082,000 532,470,000 514,197,000 520,461,000 499,683,000 481,153,000 458,999,000 470,658,000 462,367,000 449,449,000 465,615,000 488,797,000 476,467,000 469,326,000 590,265,000 605,501,000 624,746,000 673,481,000 658,058,000 639,446,000 413,800,000 399,472,000 
        total liabilities and stockholders’ equity
      2,458,396,000 2,452,662,000 2,501,181,000 2,467,436,000 2,406,884,000 2,429,731,000 2,414,180,000 2,408,529,000 2,357,143,000 2,485,094,000 2,437,446,000 2,414,102,000 2,431,593,000 2,494,286,000 2,440,114,000 2,293,706,000 2,209,699,000 2,112,676,000 1,962,428,000 1,841,473,000 1,768,015,000 1,779,008,000 1,746,231,000 1,870,760,000 1,834,356,000 1,651,207,000 1,670,632,000 1,633,927,000 1,559,657,000 1,539,231,000 1,517,682,000 1,432,296,000 1,358,083,000 1,365,641,000 1,344,432,000 1,312,261,000 1,244,483,000 1,309,992,000 1,320,868,000 1,283,174,000 1,245,231,000 1,262,909,000 1,244,286,000 1,192,048,000 1,141,699,000 1,127,622,000 1,140,567,000 1,085,063,000 1,021,645,000 1,017,326,000                   
        accumulated other comprehensive income
       -439,000 104,000 452,000 -71,000 272,000 2,346,000 2,473,000 3,345,000 4,324,000 5,586,000 6,569,000 6,386,000 7,103,000 3,978,000 4,974,000 5,323,000 3,699,000 1,887,000 2,672,000 1,994,000 1,190,000 -1,367,000 -2,090,000 -2,264,000 203,000                                           
        contingent consideration
           2,650,000 12,160,000 104,070,000 100,220,000 92,900,000 99,200,000 117,040,000                                                         
        current assets of discontinued operations
                                                                          
        long-term assets of discontinued operations
                                                                          
        current liabilities of discontinued operations
                                                                          
        long-term liabilities of discontinued operations
                                                                          
        current portion of contingent consideration
                  43,390,000                                                        
        contingent consideration, less current portion
                  83,650,000                                                        
        current portion of pension and postretirement liabilities
                               3,572,000 1,921,000 8,231,000 7,984,000 8,659,000 12,640,000                                      
        pension and postretirement liabilities, less current portion
                               20,294,000 32,059,000 31,874,000 31,695,000 31,504,000 27,614,000                                      
        pension and postretirement liabilities
                                     36,169,000 36,984,000 39,827,000 40,168,000 37,028,000 37,541,000 35,848,000 42,520,000 45,595,000 56,603,000 51,241,000 49,978,000 39,620,000 44,448,000 42,418,000 37,272,000 33,983,000 34,587,000 26,847,000 38,040,000 51,941,000 104,673,000 93,491,000 91,869,000 105,241,000 106,578,000 66,907,000 65,204,000 63,466,000 77,966,000 74,616,000 89,472,000 48,476,000 48,162,000 50,833,000   
        restricted cash
                                          962,000 962,000 962,000 961,000 1,385,000 1,384,000 1,387,000 1,387,000 1,386,000                        
        other assets
                                             56,050,000 55,988,000 54,527,000 53,177,000 53,168,000 53,376,000 52,896,000 53,184,000 53,098,000 53,349,000 52,609,000 51,058,000 51,381,000 51,634,000 52,130,000 51,693,000 55,424,000 55,716,000 52,439,000 54,564,000 53,717,000 52,843,000 48,132,000 50,636,000 54,337,000 55,651,000 57,773,000 67,079,000 67,653,000 
        other liabilities
                                             12,301,000 12,206,000 12,689,000 12,755,000 12,295,000 12,740,000 16,667,000 14,482,000 14,657,000 13,217,000 15,041,000 13,560,000 12,558,000 12,832,000 12,628,000 12,630,000 12,819,000 13,751,000 13,933,000 17,713,000 18,237,000 18,773,000 15,939,000 17,314,000 19,428,000 20,549,000 21,005,000 64,659,000 63,369,000 
        bank overdraft and drafts payable
                                                  14,299,000 16,095,000 15,914,000 17,218,000 15,009,000 13,609,000 11,645,000 15,672,000 13,645,000 13,028,000 15,327,000 10,780,000 20,836,000 14,631,000 15,820,000 13,151,000 11,953,000 8,676,000 15,189,000 13,113,000 19,140,000 11,669,000 5,980,000 8,341,000 
        restricted cash, cash equivalents, and short-term investments
                                                   1,386,000 1,385,000 1,385,000 1,903,000  1,902,000 1,901,000                 
        short‑term investments
                                                       35,906,000                   
        restricted cash, cash equivalents, and short‑term investments
                                                       1,902,000                   
        current portion of long‑term debt
                                                       31,513,000                   
        long‑term debt, less current portion
                                                       81,332,000                   
        additional paid‑in‑capital
                                                       296,133,000                   
        total liabilities and stockholders' equity
                                                        1,038,123,000                  
        restricted cash equivalents and short-term investments
                                                          9,658,000 9,798,000 21,025,000 29,544,000 52,693,000 52,323,000 51,681,000 51,693,000         
        service, office and other equipment
                                                            117,285,000 176,592,000 174,740,000 169,743,000 167,329,000 165,587,000 154,412,000 152,120,000 150,524,000 149,483,000 146,751,000 144,638,000 110,044,000 108,522,000 
        short-term investment securities
                                                                 42,309,000 129,049,000 130,538,000 117,855,000 73,986,000 19,225,000    
        common stock, .01 par value...
                                                                  267,000 267,000 267,000 267,000 267,000 266,000 255,000 254,000 
        prepaid income taxes
                                                                    17,661,000 1,952,000 1,950,000 2,751,000   
        other commitments & contingencies
                                                                          
        prepaid pension costs
                                                                        29,315,000 30,516,000 
        assets held for sale
                                                                        8,625,000 8,175,000 
        goodwill, less accumulated amortization
                                                                        63,863,000 63,871,000 
        federal and state income taxes
                                                                        1,600,000  
        fair value of interest rate swap
                                                                        3,558,000 5,464,000 
        future minimum rental commitments
                                                                          
        other commitments and contingencies
                                                                          
        federal and state income taxes prepaid
                                                                         1,696,000 
      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 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 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 2007-09-30 2007-06-30 2007-03-31 2006-09-30 2006-06-30 2006-03-31 2005-09-30 2005-06-30 2005-03-31 2004-09-30 2004-06-30 2004-03-31 
                                                                                             
          operating activities
                                                                                             
          net income
        -1,037,000 -8,116,000 39,274,000 25,809,000 3,131,000 29,035,000 100,314,000 46,924,000 -2,312,000 48,790,000 34,917,000 40,443,000 71,283,000 37,337,000 88,842,000 102,461,000 69,569,000 65,488,000 63,691,000 60,981,000 23,361,000 23,914,000 29,404,000 15,880,000 1,902,000 -5,549,000 16,270,000 24,376,000 4,888,000 15,299,000 40,776,000 1,233,000 9,954,000 36,568,000 14,788,000   1,584,000 12,940,000 10,231,000 -6,103,000 4,988,000 19,154,000 19,967,000 745,000 14,544,000 19,618,000 17,208,000 -5,193,000 10,346,000 13,982,000 4,878,000 -13,395,000 -7,929,000 6,518,000 11,841,000 -18,162,000 1,404,000 12,265,000 5,451,000 -12,787,000  -585,000 -7,349,000 -21,371,000 -88,673,000 -5,249,000 -15,443,000 -18,157,000 -10,974,000 15,443,000 16,155,000 8,544,000 18,915,000 19,622,000 4,799,000 31,546,000 32,259,000 6,122,000 40,566,000 23,407,000 10,464,000 27,369,000 19,298,000 4,461,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                                             
          depreciation and amortization
        41,710,000 41,845,000 41,200,000 37,726,000 36,764,000 36,161,000 33,411,000 33,077,000 33,616,000 34,189,000 33,907,000 32,617,000 32,187,000 31,950,000 31,479,000 32,099,000 31,591,000 30,751,000 29,404,000 29,322,000 29,387,000 29,190,000 29,049,000 28,108,000 28,032,000 28,132,000 28,245,000 26,313,000 25,409,000 25,809,000 26,896,000 26,057,000 25,352,000 25,113,000 25,085,000 24,074,000 24,258,000 25,181,000 24,720,000 24,749,000 24,164,000 23,898,000 22,512,000 21,546,000 21,084,000 21,257,000 21,073,000 20,130,000 19,410,000 19,776,000 20,525,000 21,764,000 22,150,000 22,721,000 22,802,000 20,650,000 19,320,000 19,541,000 18,230,000 18,053,000 17,918,000 17,794,000 17,675,000 17,617,000 18,479,000 18,878,000 18,432,000 18,583,000 19,333,000 19,403,000 19,007,000 19,171,000 19,291,000 19,496,000 19,305,000 18,968,000 17,142,000 16,608,000 16,197,000 15,371,000 14,742,000 14,576,000 13,905,000 13,311,000 13,317,000 
          amortization of intangibles
        2,594,000 3,200,000 3,200,000 3,200,000 3,200,000 3,206,000 3,200,000 3,199,000 3,217,000 3,198,000 3,233,000 3,195,000 3,203,000 3,229,000 3,228,000 3,231,000 3,232,000 2,475,000 955,000 960,000 967,000 1,070,000 983,000 978,000 981,000 1,002,000 1,116,000 1,121,000 1,128,000 1,127,000 1,130,000 1,130,000 1,134,000 1,134,000 1,133,000 1,135,000 1,136,000 1,180,000 1,073,000 999,000 987,000 923,000 861,000 1,070,000 1,148,000 1,110,000 1,105,000 1,094,000 1,043,000 1,044,000 1,043,000 1,044,000 1,043,000 1,043,000 1,018,000                               
          share-based compensation expense
        2,118,000 1,671,000 2,742,000 3,779,000 2,383,000 2,315,000 2,718,000 3,433,000 2,889,000 2,848,000 3,005,000 3,350,000 2,235,000 2,959,000 3,175,000 3,878,000 2,763,000 2,859,000 2,889,000 3,324,000 2,354,000 2,522,000 2,885,000 2,890,000 2,181,000 2,255,000 2,409,000 2,801,000 2,058,000 2,228,000 2,641,000 1,674,000 1,870,000 1,888,000 1,471,000 1,868,000 1,731,000 1,437,000 1,951,000 2,491,000 1,709,000 1,686,000 2,110,000 2,586,000 1,647,000 1,636,000 1,694,000 2,100,000 1,568,000  1,094,000 1,182,000 1,303,000 1,357,000 1,369,000 1,900,000 1,442,000 1,334,000 1,417,000 2,253,000 1,446,000 1,499,000 2,033,000 843,000 1,315,000 1,380,000 1,604,000 2,050,000 1,123,000 1,583,000 1,517,000 1,879,000 1,127,000 1,336,000 1,288,000 902,000 1,415,000         
          provision for losses on accounts receivable
        736,000 896,000 984,000 273,000 1,129,000 2,796,000 790,000 193,000 1,055,000 1,009,000 364,000   1,890,000 1,482,000 1,955,000 1,628,000 1,523,000 277,000 -238,000 -96,000 2,157,000 1,171,000 -384,000 1,383,000 391,000 211,000 509,000 112,000   624,000 445,000 3,376,000 -348,000 611,000 442,000 856,000 369,000 336,000 82,000                                           57,000 558,000 
          change in deferred income taxes
        -12,200,000 -3,745,000 37,304,000 -951,000 764,000 11,890,000 22,004,000 1,091,000 -12,548,000 5,314,000 -2,652,000 1,586,000 -9,814,000 -9,995,000 10,116,000 -4,954,000 -1,417,000 1,004,000 -981,000 -2,614,000 -4,998,000 4,884,000 8,001,000 -2,355,000 -2,815,000 -8,688,000 8,975,000                                                           
          loss on sale of property and equipment
        68,000   91,000 -49,000 -1,113,000 -1,628,000 348,000 217,000 3,663,000 -54,000                                                                           
          changes in operating assets and liabilities:
                                                                                             
          receivables
        -58,427,000 33,869,000 -6,797,000 13,481,000 -9,615,000 1,155,000 5,642,000 3,643,000 35,059,000 -2,289,000 -40,064,000 39,565,000 43,977,000 44,540,000 32,203,000 16,585,000 -103,677,000 -18,896,000 -66,141,000 -15,177,000 -22,568,000 776,000 -48,531,000 5,752,000 3,874,000 9,504,000 2,435,000 -2,150,000 3,931,000 23,733,000 -16,006,000 -21,021,000 -10,260,000 16,002,000 -14,499,000 -24,436,000 3,345,000 -6,664,000 -15,091,000 -13,384,000 9,569,000 19,123,000        12,313,000                9,852,000 -5,967,000 -7,037,000 -583,000 37,410,000 7,884,000 -10,419,000 -4,307,000 -12,770,000 -4,244,000 -1,970,000 -9,949,000 -14,790,000 5,358,000 -11,035,000 -7,546,000 1,855,000 -11,350,000 -18,031,000 -1,331,000 
          prepaid expenses
        115,000 -14,035,000 2,751,000 8,550,000 1,194,000 -15,848,000 -565,000 7,397,000 -2,198,000 -6,077,000 2,287,000 7,817,000 -1,464,000 -7,960,000 73,000 10,335,000 -2,858,000 -9,137,000 6,236,000 4,001,000 -2,582,000 -8,775,000 -635,000 4,873,000 -3,429,000 -4,491,000 3,058,000 2,437,000 -5,760,000 -4,001,000 -1,380,000 4,980,000 -2,587,000 -27,000 2,512,000 2,625,000 -5,174,000 -2,501,000 1,914,000 3,192,000 -3,998,000 -1,991,000 662,000    94,000   -3,438,000 366,000   -2,635,000 1,577,000    308,000   -1,580,000 325,000   -1,892,000 1,395,000 2,888,000 -1,962,000 -1,714,000 1,051,000 3,339,000 -2,103,000 1,564,000 3,472,000 -2,309,000 2,331,000 3,479,000 -1,089,000 2,547,000 3,836,000 537,000 2,433,000 1,856,000 -5,813,000 
          other assets
        1,970,000 -3,350,000 -4,673,000 -477,000 156,000 -756,000 -575,000 -1,571,000 -1,218,000 1,437,000 1,634,000 -3,115,000 3,874,000 -3,228,000 215,000 2,853,000 -2,781,000 -185,000 514,000 189,000 -164,000 -1,272,000 -440,000 -1,442,000 5,800,000 2,871,000 -1,438,000 -7,387,000 4,589,000 485,000 -6,844,000 -714,000 2,732,000 -269,000 -862,000 257,000 -3,357,000 -700,000 -369,000 -332,000 -2,954,000 585,000 120,000 -71,000 456,000     542,000         2,147,000    -47,000   474,000 -218,000 -2,361,000 2,895,000 5,173,000 967,000 276,000 4,671,000 -363,000 -1,348,000 291,000 -3,539,000 3,477,000 17,773,000 -9,908,000 -3,836,000 908,000 -2,823,000 1,251,000 2,935,000 
          income taxes
        11,789,000 741,000 -26,450,000 9,378,000 -248,000 -12,086,000 5,936,000 -501,000 -8,305,000 11,394,000 13,917,000 -42,189,000 6,221,000 6,027,000 -15,279,000 7,228,000 -3,017,000 4,962,000 -4,101,000 5,899,000 6,376,000 -4,777,000 -5,348,000 5,464,000 2,949,000 -837,000 -4,841,000 1,271,000 -4,313,000 6,494,000 -2,349,000 6,086,000 1,938,000 -7,324,000 4,722,000 1,663,000 -1,205,000 3,653,000 6,845,000 5,949,000 -10,211,000 -23,213,000 1,989,000    7,755,000   1,600,000 6,705,000   1,692,000 416,000 -1,271,000 1,793,000  6,040,000   2,871,000 -3,460,000                       
          operating right-of-use assets and lease liabilities
        -34,000 175,000 227,000 166,000 -11,587,000 -117,000 174,000 448,000 -7,710,000 -366,000 227,000 1,489,000 1,570,000 1,373,000 1,465,000 100,000 14,000 -27,000 -111,000 194,000 567,000 522,000 464,000 -92,000 -138,000 202,000 367,000                                                           
          accounts payable, accrued expenses, and other liabilities
        19,136,000 -20,902,000 24,144,000 10,057,000 -49,543,000 7,970,000 9,335,000 32,204,000 -70,548,000 30,602,000 27,941,000 -3,860,000 -64,944,000 14,139,000 14,513,000 21,578,000 -3,298,000 4,487,000 59,791,000 43,221,000 -1,435,000 4,219,000 51,895,000 567,000 -15,400,000 -15,313,000 -5,705,000 29,978,000 -35,999,000 711,000 10,395,000 37,401,000 3,513,000 -7,522,000 8,908,000 18,162,000 -9,155,000 -3,470,000 -247,000 -655,000 -6,884,000 -24,098,000 690,000   -16,644,000 19,089,000 12,954,000 17,065,000 -13,265,000 3,684,000 7,028,000 11,124,000 -4,332,000                                
          net cash from operating activities
        8,538,000 44,662,000 98,180,000 108,432,000 -22,321,000 56,798,000 88,846,000 133,735,000 6,467,000 127,412,000 90,998,000 83,094,000 20,663,000 120,370,000 165,826,000 195,876,000 -11,253,000 85,173,000 92,442,000 123,366,000 22,534,000 54,723,000 69,199,000 58,938,000 23,129,000 32,351,000 57,542,000 83,842,000 -3,371,000 81,768,000 54,015,000 87,789,000 31,775,000 53,574,000 47,015,000 49,565,000 1,761,000 22,331,000 35,477,000 40,288,000 12,162,000 26,445,000 44,908,000 63,734,000 10,932,000 25,565,000 60,558,000 51,433,000 6,210,000 27,253,000 38,319,000   36,426,000 33,936,000 9,295,000 4,877,000 28,574,000 39,146,000   4,414,000 2,645,000   -12,074,000 21,747,000   1,582,000 44,810,000 33,746,000 25,199,000 36,387,000 41,303,000 15,281,000 43,614,000 51,756,000 22,692,000 41,483,000 41,770,000 21,513,000 41,628,000 39,235,000 19,811,000 
          capital expenditures
        -13,329,000 -11,203,000 -68,688,000 -30,630,000 -17,645,000 -57,724,000 -69,588,000 -54,004,000 -58,684,000 -92,795,000 -49,022,000 -51,893,000 -38,288,000 -75,515,000 -31,767,000 -34,242,000 -23,981,000 -20,659,000 -22,942,000 -19,579,000 -15,293,000 -27,775,000 -7,010,000 -12,624,000 -10,080,000 -24,158,000 -30,829,000 -29,245,000 -18,199,000 -7,429,000 -15,900,000 -21,419,000 -9,341,000 -24,019,000 -20,156,000 -16,733,000 -14,713,000 -25,309,000 -22,254,000 -15,155,000 -16,025,000 -27,138,000 -15,000,000       -16,344,000 -21,525,000   -14,589,000 -30,851,000 -14,791,000 -3,823,000 -27,650,000 -28,329,000 -23,730,000 -50,207,000 -40,390,000 -21,943,000 -42,427,000 -24,597,000 -13,199,000 -28,696,000 -26,953,000 -11,150,000 
          free cash flows
        -4,791,000 33,459,000 29,492,000 77,802,000 -39,966,000 -926,000 19,258,000 79,731,000 -52,217,000 34,617,000 41,976,000 31,201,000 -17,625,000 44,855,000 134,059,000 161,634,000 -35,234,000 64,514,000 69,500,000 103,787,000 7,241,000 26,948,000 62,189,000 46,314,000 13,049,000 8,193,000 26,713,000 54,597,000 -21,570,000 74,339,000 38,115,000 66,370,000 22,434,000 29,555,000 26,859,000 32,832,000 -12,952,000 -2,978,000 13,223,000 25,133,000 -3,863,000 -693,000 44,908,000 63,734,000 10,932,000 25,565,000 60,558,000 51,433,000 6,210,000 12,253,000 38,319,000   36,426,000 33,936,000 9,295,000 4,877,000 28,574,000 39,146,000   4,414,000 2,645,000   -28,418,000 222,000   -13,007,000 13,959,000 18,955,000 21,376,000 8,737,000 12,974,000 -8,449,000 -6,593,000 11,366,000 749,000 -944,000 17,173,000 8,314,000 12,932,000 12,282,000 8,661,000 
          investing activities
                                                                                             
          purchases of property, plant and equipment, net of financings
        -9,762,000 -7,770,000 -64,998,000 -27,484,000 -14,523,000 -53,264,000 -64,930,000 -49,860,000 -55,049,000 -89,242,000 -46,608,000 -48,514,000 -34,657,000 -72,155,000 -26,386,000 -30,211,000 -19,471,000 -14,906,000 -18,111,000 -15,807,000 -9,588,000 -23,102,000 -3,937,000 -9,471,000 -6,738,000 -21,182,000 -27,864,000 -26,366,000 -15,543,000 -4,743,000 -14,486,000 -17,586,000 -7,177,000 -21,404,000 -17,254,000 -14,850,000 -12,273,000 -22,497,000 -19,692,000 -12,725,000 -13,357,000 -24,781,000        -13,291,000                                    
          proceeds from sale of property and equipment
        1,853,000 1,952,000 26,376,000 2,866,000 3,276,000 9,186,000 3,846,000 1,049,000 1,292,000 1,791,000 3,119,000 1,020,000 1,833,000 5,753,000 4,823,000 3,781,000 5,334,000 2,306,000 645,000 785,000 10,079,000 4,405,000 1,273,000 2,978,000 4,692,000 8,742,000 950,000 2,759,000 1,039,000 1,339,000 843,000 1,024,000 1,050,000 694,000 834,000 1,059,000 1,692,000 1,508,000 1,046,000 3,815,000 2,435,000 2,524,000 1,425,000 1,713,000 977,000 2,227,000 1,460,000 495,000 746,000 337,000 427,000 588,000 842,000 1,271,000                                
          proceeds from sale of short-term investments
         -990,000 24,990,000 5,236,000 10,710,000 27,370,000 22,869,000 5,635,000 37,550,000 96,877,000 21,828,000 41,865,000 16,168,000 12,321,000 12,250,000 23,590,000 12,008,000 12,009,000 24,747,000 24,418,000 24,172,000 145,838,000 34,515,000 12,210,000 31,679,000 55,398,000 28,334,000 4,998,000 10,820,000 33,231,000 8,402,000 6,245,000 23,862,000 40,915,000 2,940,000 6,125,000 20,140,000 37,612,000 8,575,000 7,840,000 20,484,000 22,380,000   18,375,000 14,538,000    15,799,000 2,974,000 2,940,000 35,712,000                                
          capitalization of internally developed software
        -3,567,000 -3,433,000 -3,690,000 -3,146,000 -3,122,000 -4,460,000 -4,658,000 -4,144,000 -3,635,000 -3,553,000 -2,414,000 -3,379,000 -3,631,000 -3,360,000 -5,381,000 -4,031,000 -4,510,000 -5,753,000 -4,831,000 -3,772,000 -5,705,000 -4,673,000 -3,073,000 -3,153,000 -3,342,000 -2,976,000 -2,965,000 -2,879,000 -2,656,000 -2,686,000 -1,414,000 -3,833,000 -2,164,000 -2,615,000 -2,902,000 -1,883,000 -2,440,000 -2,812,000 -2,562,000 -2,430,000 -2,668,000 -2,357,000                                            
          other investing activities
         1,000,000                                                                                    
          net cash from investing activities
        -11,476,000 -19,241,000 -20,566,000 -27,764,000 -9,133,000 -37,828,000 -62,372,000 -30,086,000 -56,993,000 -69,638,000 17,479,000 -40,504,000 70,960,000 -90,692,000 -95,547,000 -67,448,000 -7,396,000 -271,075,000 -22,609,000 -10,594,000 1,074,000 -5,078,000 78,341,000 1,349,000 -67,151,000 -7,699,000 -36,901,000 -27,689,000 -25,952,000 -36,644,000 -18,261,000 -33,589,000 -6,456,000 -20,158,000 -22,458,000 -12,734,000 -13,119,000 -18,496,000 -41,673,000 -5,508,000 -21,495,000 -41,199,000        -22,033,000            759,000 16,558,000                       
          financing activities
                                                                                             
          borrowings under credit facilities
         25,000,000         58,000,000     180,000,000                 70,000,000                                        
          payments on long-term debt
        -22,312,000 -20,858,000 -51,749,000 -18,209,000 -17,317,000 -18,152,000 -66,661,000 -18,938,000 -16,767,000 -16,691,000 -17,375,000 -17,465,000 -17,649,000 -15,973,000 -14,662,000 -51,938,000 -32,967,000 -95,402,000 -21,870,000 -37,256,000 -17,387,000 -16,458,000 -280,455,000 -14,587,000 -14,598,000 -15,165,000 -13,789,000 -14,767,000 -15,217,000 -21,293,000 -16,273,000 -17,136,000 -16,558,000 -16,662,000 -17,314,000 -17,651,000 -17,297,000 -15,623,000 -13,752,000 -11,761,000 -11,066,000 -8,677,000                        -32,000 -41,000 -1,321,000 -39,000 -120,000 -32,000 -37,000 -106,000 -1,194,000 -79,000 -14,000 -174,000 -115,000 -60,000 -209,000 -58,000 -56,000 -195,000 -54,000 
          net change in book overdrafts
        -2,605,000 -2,181,000 -866,000 2,741,000 -4,762,000 -1,828,000 2,470,000 -1,296,000 -2,850,000 -1,612,000 682,000 -2,678,000 -10,493,000 6,254,000 -3,983,000 5,130,000 955,000 -1,652,000 617,000 4,512,000 -5,434,000 6,161,000 -266,000 11,484,000 -10,869,000 2,848,000 -1,172,000 -1,874,000 -2,524,000 2,237,000 913,000 -316,000 -2,572,000 -2,791,000 4,767,000 -1,497,000 -981,000 -342,000 2,660,000 -1,394,000 -5,095,000 1,664,000                                            
          deferred financing costs
        -17,000 -747,000 -93,000   3,000    -2,000 -6,000 63,000 -899,000    -19,000 -106,000             22,000 -684,000       -51,000        -10,000                -517,000                   
          payment of common stock dividends
        -2,679,000 -2,700,000 -2,727,000 -2,758,000 -2,785,000 -2,810,000 -2,838,000 -2,819,000 -2,828,000 -2,846,000 -2,887,000 -2,894,000 -2,915,000 -2,938,000 -2,965,000 -2,949,000 -1,978,000 -1,994,000 -2,050,000 -2,058,000 -2,037,000 -2,035,000 -2,040,000 -2,049,000 -2,033,000 -2,042,000 -2,043,000 -2,050,000 -2,052,000 -2,068,000 -2,060,000 -2,058,000 -2,058,000 -2,057,000 -2,063,000 -2,078,000 -2,066,000 -2,069,000 -2,074,000 -2,087,000 -2,088,000 -2,097,000        -815,000                -3,891,000 -3,892,000 -3,893,000 -3,847,000 -3,847,000 -3,848,000 -3,846,000 -3,803,000 -3,790,000 -3,790,000 -3,780,000 -3,827,000         
          purchases of treasury stock
        -7,422,000 -17,437,000 -16,393,000 -19,747,000 -21,990,000 -19,125,000 -24,481,000 -15,975,000 -15,652,000 -25,645,000 -24,646,000 -27,148,000 -14,092,000 -14,885,000 -18,880,000 -14,731,000 -16,506,000 -75,000,000 -7,099,000 -1,001,000 -928,000 -2,505,000 -3,162,000 -2,995,000 -944,000 -2,508,000 -2,663,000 -9,203,000 -201,000 -2,408,000   -1,916,000 -2,478,000 -2,514,000 -2,602,000 -2,761,000                                -4,945,000 -4,184,000         
          payments for tax withheld on share-based compensation
         -72,000 -56,000 -1,924,000 -14,000 -75,000 -28,000 -21,886,000 -748,000 -255,000 -34,000 -8,432,000 -1,590,000 -489,000 -6,096,000 -8,270,000 -1,367,000 -141,000 -836,000 -9,605,000 -161,000 -76,000 -919,000 -1,010,000 -60,000 -85,000 -24,000   -2,047,000 -3,000 -35,000 -50,000 -190,000 -390,000 -2,365,000 -325,000                                                 
          net cash from financing activities
        -35,035,000 -43,995,000 -71,884,000 -39,916,000 -21,868,000 -41,987,000 -91,603,000 -60,914,000 -38,845,000 -47,051,000 -44,260,000 -58,623,000 -46,676,000 -26,837,000 -41,806,000 -65,478,000 6,137,000 -145,685,000 -24,245,000 -51,695,000 -26,020,000 -13,336,000 -286,185,000 -6,162,000 194,278,000 -6,581,000 -18,534,000 -12,821,000 -22,464,000 -32,374,000 -17,625,000 -19,545,000 -21,439,000 -21,678,000 -18,092,000 -17,477,000 -20,669,000 -19,950,000 -15,645,000 -17,332,000 -20,852,000 -11,919,000 -9,480,000 -11,920,000 20,874,000     -7,477,000    -30,458,000 -2,079,000 104,491,000 6,185,000                             
          net decrease in cash and cash equivalents
        -37,973,000  5,730,000 40,752,000 -53,322,000            -12,512,000                                                                     
          cash and cash equivalents at beginning of period
        102,030,000  127,444,000         76,620,000 303,954,000 201,909,000  190,186,000         164,973,000 157,042,000 105,354,000 90,702,000 141,295,000 102,578,000 39,332,000 100,880,000 93,805,000 5,009,000 5,767,000 32,359,000 5,251,000 
          cash and cash equivalents at end of period
        64,057,000 -18,574,000 5,730,000 40,752,000 74,122,000 -23,017,000 -65,129,000 42,735,000 172,855,000 10,723,000 64,217,000 -16,033,000 203,319,000 2,841,000 28,473,000 62,950,000 64,108,000                     -16,115,000 -21,841,000 17,448,000 134,788,000 -26,673,000 -370,000 25,994,000 166,022,000 -2,340,000 30,232,000 33,422,000 95,728,000 -2,257,000 19,058,000 13,482,000 75,071,000 19,361,000 17,723,000 -84,898,000 138,516,000 4,196,000 22,265,000 28,050,000 86,784,000 3,072,000 19,049,000 31,211,000 49,246,000 -19,555,000 -3,431,000 4,317,000 58,001,000 -56,573,000 -48,447,000 8,929,000 196,971,000 -346,000 159,000 6,253,000 -1,303,000 6,753,000 7,823,000 -6,408,000 16,065,000 1,568,000 28,153,000 9,106,000 8,023,000 
          noncash investing activities
                                                                                             
          equipment financed
        22,106,000 30,614,000 24,450,000 45,388,000 17,403,000 26,775,000 43,585,000   2,471,000 27,546,000 3,478,000 25,184,000 37,743,000        39,479,000    30,002,000   22,441,000 57,168,000 14,286,000 121,000 22,563,000 23,014,000 37,899,000 694,000 21,682,000 25,916,000 33,821,000 1,947,000 29,583,000 38,339,000   14,323,000 18,160,000                                      
          accruals for equipment received
        745,000 -778,000 -13,253,000 13,350,000 1,236,000 -4,651,000 1,210,000 2,989,000 915,000 -4,016,000 -4,363,000 8,653,000 1,453,000 -1,250,000 -1,987,000 6,862,000 712,000 -1,454,000 -2,826,000 5,751,000 233,000 -479,000 1,289,000 818,000 39,000 -18,715,000 -453,000 16,524,000 2,878,000 2,369,000 -8,211,000 7,766,000 883,000 883,000 -2,328,000 2,739,000 440,000 -8,994,000 -1,223,000 2,128,000 8,486,000 -6,402,000 -1,822,000 8,809,000 163,000 -8,704,000 2,763,000 6,767,000 102,000 60,000 -4,000 95,000 173,000 267,000 -7,382,000 5,356,000 2,060,000 -4,839,000 -181,000                           
          lease liabilities arising from obtaining right-of-use assets
        5,137,000 2,889,000 5,328,000 9,069,000 32,909,000 8,580,000 14,871,000 20,307,000 5,694,000 13,392,000 5,667,000 12,785,000 30,581,000 8,970,000 48,114,000 4,737,000 25,473,000 7,391,000 1,229,000 4,092,000 1,959,000 7,284,000 36,808,000 13,357,000 10,370,000 5,951,000 3,761,000 4,905,000 18,144,000                                                         
          pre-tax gain on sale of discontinued operations
             -806,000 14,000 -1,132,000 -69,083,000                                                                         
          asset impairment charges
                                                                                             
          change in fair value of contingent consideration
           -9,510,000 -91,910,000 3,850,000 7,320,000 -6,300,000 -17,840,000                                                                           
          change in fair value of equity investment
             28,739,000                                                                           
          proceeds from sale of discontinued operations
                 -189,000 101,138,000                                                                         
          purchases of short-term investments
         -10,000,000    -24,000,000 -5,236,000 -16,184,000 -33,495,000 -11,270,000 -35,588,000 -37,098,000 -80,924,000 -51,991,000 -12,339,000 -12,321,000 -25,560,000 -18,130,000 -5,880,000 -61,760,000 -23,520,000 -73,973,000 -23,962,000 -62,420,000 -29,537,000 -13,790,000 -41,374,000 -41,115,000 -21,596,000 -4,410,000 -23,185,000 -44,051,000 -6,223,000 -17,640,000 -33,075,000 -2,940,000 -15,745,000 -12,495,000                                            
          net increase in cash and cash equivalents
             -23,017,000 -65,129,000 42,735,000 -89,371,000 10,723,000 64,217,000 -16,033,000 44,947,000 2,841,000 28,473,000   -331,587,000 45,588,000 61,077,000 -2,412,000 36,309,000 -138,645,000 54,125,000 150,256,000  2,107,000 43,332,000 -51,787,000         -16,115,000 -21,841,000 17,448,000 -30,185,000 -26,673,000 -370,000 25,994,000 8,980,000 -2,340,000 30,232,000   -2,257,000        4,196,000 22,265,000   3,072,000 19,049,000 31,211,000 9,914,000 -19,555,000 -3,431,000 4,317,000 -42,879,000 -56,573,000 -48,447,000 8,929,000 103,166,000 -346,000 159,000 1,244,000 -1,303,000 6,753,000 2,056,000 -6,408,000 16,065,000 -30,791,000 28,153,000 9,106,000 2,772,000 
          cash and cash equivalents of continuing operations at beginning of period
             262,226,000 158,264,000                                                                         
          cash and cash equivalents of discontinued operations at beginning of period
                 108,000                                                                         
          gain on sale of property and equipment
                    -9,000 -1,891,000 -5,686,000      -8,635,000    -2,130,000 -3,863,000 85,000 -1,426,000 -43,000 129,000 -22,000 55,000 -221,000 182,000 3,000 201,000 -613,000 -754,000 -95,000 -2,175,000 -311,000 -534,000        333,000                                    
          gain on sale of subsidiary
                                                                                           
          business acquisition, net of cash acquired
                                                                                         
          proceeds from the sale of subsidiary
                                                                                             
          proceeds from notes payable
                     2,093,000 4,833,000           10,858,000                                                           
          lease impairment charges
                                                                                            
          purchase of long-term investments
                                                                                             
          forward contract for accelerated share repurchase
                                                                                             
          ​
                                                                                             
          benefit from losses on accounts receivable
                    1,427,000                             57,000 314,000 315,000 312,000 295,000 615,000 948,000 84,000 407,000 346,000 343,000 969,000 210,000 585,000 454,000 275,000 289,000 983,000 824,000 298,000 415,000 150,000 61,000 242,000 155,000 521,000 903,000 1,008,000 413,000 554,000 356,000 300,000 437,000   409,000 89,000 -35,000 347,000 634,000 433,000    
          pension settlement expense
                               89,000   278,000 1,356,000 11,322,000 518,000 431,000 654,000 512,000 943,000 744,000 1,957,000 962,000 803,000 564,000 900,000 724,000 762,000 597,000 1,119,000 1,190,000 805,000 909,000 3,691,000 277,000              4,430,000   447,000 1,093,000 87,000 189,000 1,060,000          
          proceeds from sale of subsidiary
                                                                                           
          borrowings under accounts receivable securitization program
                             45,000,000               35,000,000                                         
          gain on sale of property and equipment and lease termination
                        -3,002,000 -131,000 19,000   904,000 301,000                                                               
          equipment and other financings
                        8,113,000 22,969,000 28,593,000                                                                   
          asset impairment
                                                                                             
          gain on sale of subsidiaries
                                                                                          
          proceeds from sale of subsidiaries
                                                                                          
          cash and cash equivalents cash at end of period
                          45,588,000 61,077,000 301,542,000 36,309,000 -138,645,000 54,125,000 352,165,000 18,071,000 2,107,000 43,332,000 138,399,000                                                         
          pension settlement expense, including termination expense
                                370,000                                                            
          multiemployer pension fund withdrawal liability
                                -150,000 -149,000 -146,000 -146,000 -143,000 -142,000 -15,178,000                                                       
          net increase in cash and cash equivalents and restricted cash
                                     12,750,000 18,129,000 34,655,000 3,880,000                                                     
          cash and cash equivalents and restricted cash at beginning of period
                                     120,772,000 115,242,000                                                 
          deferred income tax benefit
                                    -584,000  14,515,000 -8,069,000 -2,749,000                                  -1,263,000    2,186,000               
          impairment of long-lived assets
                                                                                             
          deferred income tax provision
                                         -16,059,000 3,159,000 6,884,000 -4,197,000 -4,677,000 664,000 8,323,000 5,212,000    1,507,000                        8,471,000    376,000 -1,260,000 135,000 1,291,000          
          business acquisitions, net of cash acquired
                                             25,000 -25,002,000                                               
          cash and cash equivalents and restricted cash at end of period
                                     12,750,000 18,129,000 34,655,000 124,652,000 11,738,000 6,465,000 19,354,000 83,215,000                                                 
          net decrease in cash and cash equivalents and restricted cash
                                          6,465,000 19,354,000 -32,027,000                                                 
          net loss
                                            -7,407,000                                                 
          adjustments to reconcile net loss to net cash from operating activities:
                                                                                             
          net change in restricted cash
                                             -1,000                                               
          proceeds from the exercise of stock options
                                                     1,136,000                          484,000   3,349,000       
          purchase of treasury stock
                                                                                      -4,274,000 -7,073,000 -4,049,000 -1,499,000 -3,651,000 -3,876,000 
          net change in bank overdraft and drafts payable
                                                                                             
          net change in restricted cash, cash equivalents, and short-term investments
                                                     -1,000    -1,000 4,004,000 3,754,000                                 
          net change in bank overdraft
                                                      -1,298,000             2,670,000 127,000     7,972,000 2,016,000 3,277,000 -6,513,000 2,076,000 -6,027,000 7,471,000 -3,579,000 1,327,000 749,000 -630,000 -389,000         
          capitalization of internally developed software and other
                                                         -1,709,000                -1,214,000 -1,341,000 -1,378,000 -1,243,000 -1,285,000 -1,493,000 -1,305,000 -1,242,000 -1,111,000 -1,069,000 -1,202,000 -1,180,000 -1,213,000 -906,000 -980,000 -1,046,000 -1,150,000 -823,000 -1,101,000 -1,096,000 
          net change in bank overdraft and other
                                                        1,400,000 1,965,000 -4,028,000       6,203,000                            
          share‑based compensation expense
                                                                                             
          purchases of short‑term investments
                                                                                             
          proceeds from sale of short‑term investments
                                                                                             
          payments on long‑term debt
                                                                                             
          acquisition of noncontrolling interest
                                                                                             
          net change in restricted cash, cash equivalents, and short‑term investments
                                                                                             
          purchases of property, plant and equipment
                                                                                 -26,539,000 -27,260,000 -22,528,000 -49,027,000 -39,177,000 -21,037,000 -41,447,000 -23,551,000 -12,049,000 -27,873,000 -25,852,000 -10,054,000 
          proceeds from issuance of long-term debt
                                                                     11,416,000                     
          net change in restricted cash equivalents and short-term investments
                                                                                             
          equipment financed under capital leases and notes payable
                                                             16,603,000   9,103,000 17,425,000                           
          change in restricted cash equivalents and short-term investments
                                                              11,227,000 8,519,000 23,149,000        130,000                     
          accounts payable, accrued expenses and other liabilities
                                                               -2,631,000 7,371,000 -4,374,000 -6,516,000 16,797,000 12,555,000 -5,202,000 -4,183,000                       
          proceeds from sales of property and equipment
                                                               1,377,000 1,315,000 1,384,000 2,308,000                           
          proceeds from sales of short-term investments
                                                               6,370,000 3,185,000 28,820,000 22,050,000                           
          other amortization
                                                                57,000 56,000 54,000 50,000 73,000 67,000 67,000 66,000 67,000 1,058,000 73,000 74,000 73,000 73,000 73,000 74,000 73,000 73,000 62,000 53,000 53,000 53,000 53,000 52,000 66,000 73,000 73,000 73,000 73,000 
          goodwill impairment charge
                                                                                             
          purchases of property, plant and equipment, net of capital leases and notes payable
                                                                                             
          proceeds from the exercise of stock options and other
                                                                   763,000 1,363,000 33,000 158,000 274,000 229,000 88,000 -2,000 154,000 70,000 36,000      364,000   625,000 -303,000 2,111,000    
          deferred income taxes
                                                                                             
          gain on sales of assets
                                                                         -195,000 -253,000 -244,000 -717,000 -726,000 -671,000 -450,000 -1,873,000             
          purchases of property, plant and equipment, net of capital leases
                                                                         -15,130,000 -20,184,000 -10,762,000 -1,968,000 -13,304,000 -29,358,000 -13,486,000 -2,581,000             
          proceeds from asset sales
                                                                    612,000 2,486,000 717,000 867,000 1,809,000 1,199,000 792,000 836,000 2,086,000 2,089,000 2,226,000 2,084,000 10,674,000 2,198,000 1,776,000 3,430,000 2,590,000 4,357,000 3,599,000 21,951,000 4,461,000 565,000 7,341,000 4,705,000 287,000 
          purchases of short-term investment securities
                                                                         392,000 -34,910,000 -31,011,000 -44,277,000 -66,269,000 -61,161,000   -65,075,000 -81,485,000 -84,135,000 -93,520,000 -115,280,000 -101,549,000 -112,674,000 -76,423,000 -69,501,000    
          proceeds from sales of short-term investment securities
                                                                    2,940,000 20,569,000 41,259,000 15,690,000 42,226,000 37,111,000 32,594,000 32,500,000 31,595,000 22,400,000 6,400,000 78,604,000 53,725,000 71,875,000 99,050,000 104,250,000 93,580,000 101,425,000 90,175,000 75,455,000 37,400,000    
          excess tax benefits from share-based compensation
                                                                      83,000     -35,000   -383,000 -2,000 -298,000 -20,000         
          accounts payable, taxes payable, accrued expenses and other liabilities,
                                                                        3,723,000                     
          net cash used by operating activities
                                                                                             
          net cash provided (used) by investing activities
                                                                        18,596,000   -14,688,000 -13,807,000   -31,932,000 85,455,000             
          net cash used by financing activities
                                                                         -29,839,000 -2,129,000 -1,939,000 -10,245,000 -1,786,000 -9,871,000 7,115,000 -7,488,000 69,000 -4,981,000 -8,652,000 -8,030,000 -8,720,000 -2,168,000 -4,916,000 -4,601,000 -7,569,000 7,880,000 -7,881,000 -6,176,000 
          accounts payable, taxes payable, accrued expenses and other liabilities
                                                                         -16,626,000 12,672,000 28,650,000 -30,311,000 -63,416,000 -3,648,000 8,405,000 -1,993,000 10,201,000 2,970,000 -6,480,000 5,649,000    15,149,000 -657,000    
          net cash used by investing activities
                                                                         22,358,000    -56,369,000    -36,802,000 -36,163,000 -5,385,000 -36,887,000 -36,283,000 -18,468,000 -42,975,000 -21,104,000 -44,735,000   -10,863,000 
          adjustments to reconcile net income to net cash provided (used) by operating activities:
                                                                                             
          net cash provided (used) by operating activities
                                                                            -18,827,000                 
          gain on disposal of discontinued operations, net of taxes
                                                                                            
          proceeds from disposal of discontinued operations
                                                                                            
          gain on sales of assets and other
                                                                                 -946,000 -477,000 -1,322,000 -1,591,000 -1,222,000 -193,000 -16,063,000      
          gain on disposal of discontinued operations, net of tax
                                                                                             
          provision (credit) for losses on accounts receivable
                                                                                   296,000          
          settlement accounting expense
                                                                                    1,021,000         
          fair value of interest rate swap
                                                                                       -873,000 -1,522,000 -1,906,000 -866,000 
          deferred income tax credit
                                                                                             
          pension settlement accounting charge
                                                                                      8,438,000       
          stock compensation expense
                                                                                      1,146,000 297,000      
          benefit from deferred income taxes
                                                                                      -2,979,000       
          excess tax benefits from stock-based compensation
                                                                                      -559,000       
          accounts payable , taxes payable, accrued expenses and other liabilities
                                                                                      -27,540,000       
          net increase in bank overdraft
                                                                                      2,114,000       
          dividends paid on common stock
                                                                                      -3,801,000 -3,813,000 -3,064,000 -3,038,000 -3,007,000 -2,994,000 -2,990,000 
          provision (credit) for deferred income taxes
                                                                                       291,000 -4,367,000 -5,687,000    
          borrowings under revolving credit facilities
                                                                                          500,000 33,800,000 
          payments under revolving credit facilities
                                                                                          -500,000 -33,800,000 
          net decrease in bank overdraft
                                                                                        3,024,000 -5,085,000  -2,077,000 -405,000 
          (gain) loss on sales of assets and other
                                                                                         -116,000    
          gain on sale of wingfoot
                                                                                             
          accounts payable, bank drafts payable, taxes payable, accrued expenses and other liabilities
                                                                                          11,667,000 23,017,000 5,747,000 
          proceeds from sale of wingfoot
                                                                                             
          net cash (used) provided by investing activities
                                                                                          -21,355,000   
          other
                                                                                           1,036,000 1,149,000 
          provision for deferred income taxes
                                                                                           1,574,000 706,000 
          loss on sales of assets and other
                                                                                           -1,265,000 24,000