7Baggers

Eagle Materials Inc
(NYSE:EXP) 

EXP stock logo

Eagle Materials Inc., through its subsidiaries, produces and supplies heavy construction materials, light building materials, and materials used for oil and natural gas extraction in the United States. It operates in five segments: Cement, Concrete and Aggregates, Gypsum Wallboard, Recycled Paperboa...

Founded: 1963
Full Time Employees: 2,400
Sector: Basic Materials
Industry: Building Materials

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At a glance:
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Quarterly
Annual
    Unit: USD2025-09-30 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 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 
                                                                                              
      revenue
    638,906,000 634,690,000 470,175,000 558,025,000 623,619,000 608,689,000 476,707,000 558,833,000 622,236,000 601,521,000 470,127,000 511,487,000 605,068,000 561,387,000 413,117,000 462,941,000 509,694,000 475,770,000 343,302,000 404,667,000 447,684,000 428,020,000 315,442,000 350,249,000 414,526,000 370,597,000 284,701,000 333,285,000 381,499,000 393,756,000                                                             
      yoy
    2.45% 4.27% -1.37% -0.14% 0.22% 1.19% 1.40% 9.26% 2.84% 7.15% 13.80% 10.49% 18.71% 18.00% 20.34% 14.40% 13.85% 11.16% 8.83% 15.54% 8.00% 15.49% 10.80% 5.09% 8.66% -5.88%                                                                 
      qoq
    0.66% 34.99% -15.74% -10.52% 2.45% 27.69% -14.70% -10.19% 3.44% 27.95% -8.09% -15.47% 7.78% 35.89% -10.76% -9.17% 7.13% 38.59% -15.16% -9.61% 4.59% 35.69% -9.94% -15.51% 11.85% 30.17% -14.58% -12.64% -3.11%                                                              
      cost of goods sold
    439,194,000 449,091,000 365,563,000 380,212,000 419,775,000 421,821,000 357,027,000 378,205,000 413,218,000 425,526,000 334,736,000 352,717,000 410,829,000 410,521,000 313,941,000 324,355,000 354,353,000 349,259,000 273,472,000 291,288,000 324,835,000 327,041,000 251,529,000 262,735,000 310,020,000 295,268,000 228,119,000 252,864,000 283,568,000 302,122,000 223,336,000 264,805,000 279,561,000 280,062,000 217,163,000 215,015,000 241,448,000 225,549,000 194,771,000 208,544,000 284,694,000 223,866,000 180,258,000 212,380,000 209,747,000 209,850,000 160,366,000 178,964,000 193,167,000 180,440,000   132,170,000 131,145,000   126,102,000 112,434,000   118,586,000 114,363,000                             
      gross profit
    199,712,000 185,599,000 104,612,000 177,813,000 203,844,000 186,868,000 119,680,000 180,628,000 209,018,000 175,995,000 135,391,000 158,770,000 194,239,000 150,866,000 99,176,000 138,586,000 155,341,000 126,511,000 69,830,000 113,379,000 122,849,000 100,979,000 63,913,000 87,514,000 104,506,000 75,329,000 56,582,000 80,421,000 97,931,000 91,634,000 61,377,000 94,566,000 96,754,000 86,059,000 61,500,000 87,380,000 91,210,000 71,955,000 57,361,000 68,865,000 44,294,000 61,097,000 43,522,000 79,149,000 75,061,000 56,401,000 29,528,000 49,848,000 59,479,000 46,604,000   32,489,000 22,897,000   8,717,000 7,373,000   13,549,000 16,431,000                             
      yoy
    -2.03% -0.68% -12.59% -1.56% -2.48% 6.18% -11.60% 13.77% 7.61% 16.66% 36.52% 14.56% 25.04% 19.25% 42.02% 22.23% 26.45% 25.28% 9.26% 29.56% 17.55% 34.05% 12.96% 8.82% 6.71% -17.79% -7.81% -14.96% 1.22% 6.48% -0.20% 8.22% 6.08% 19.60% 7.22% 26.89% 105.92% 17.77% 31.80% -12.99% -40.99% 8.33% 47.39% 58.78% 26.20% 21.02%   83.07% 103.54%   272.71% 210.55%   -35.66% -55.13%                                 
      qoq
    7.60% 77.42% -41.17% -12.77% 9.08% 56.14% -33.74% -13.58% 18.76% 29.99% -14.73% -18.26% 28.75% 52.12% -28.44% -10.79% 22.79% 81.17% -38.41% -7.71% 21.66% 57.99% -26.97% -16.26% 38.73% 33.13% -29.64% -17.88% 6.87% 49.30% -35.10% -2.26% 12.43% 39.93% -29.62% -4.20% 26.76% 25.44% -16.71% 55.47% -27.50% 40.38% -45.01% 5.45% 33.08% 91.01% -40.76% -16.19% 27.63%    41.89%    18.23%    -17.54%                              
      gross margin %
    31.26% 29.24% 22.25% 31.86% 32.69% 30.70% 25.11% 32.32% 33.59% 29.26% 28.80% 31.04% 32.10% 26.87% 24.01% 29.94% 30.48% 26.59% 20.34% 28.02% 27.44% 23.59% 20.26% 24.99% 25.21% 20.33% 19.87% 24.13% 25.67% 23.27% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity%  NaN% Infinity% Infinity%  NaN% Infinity% Infinity%  NaN% Infinity% Infinity%  NaN% NaN% NaN%  NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN% NaN%  NaN% NaN% NaN% NaN% NaN% NaN% NaN% 
      equity in earnings of unconsolidated joint venture
    6,309,000 3,804,000 4,417,000 4,987,000 9,276,000 7,716,000 8,791,000 9,285,000 10,346,000 3,159,000 11,843,000 11,377,000 7,156,000 5,098,000 7,703,000 8,555,000 8,260,000 7,970,000 8,985,000 10,083,000 10,577,000 7,796,000 10,096,000 10,700,000 12,357,000 9,432,000 9,634,000 9,507,000 10,173,000 9,251,000 10,216,000 11,372,000 11,955,000 9,876,000 11,015,000 11,244,000 12,147,000 7,980,000 9,090,000 10,483,000 11,680,000 7,830,000 10,693,000 12,423,000 12,051,000 9,800,000 10,330,000 9,856,000 9,747,000 7,878,000    6,468,000   7,936,000 5,448,000   4,160,000 6,512,000   5,065,000 7,301,000  2,213,500 8,854,000 7,886,000    6,176,000   11,001,000 5,997,000   6,883,000          
      general and administrative expenses
    -21,316,000 -20,783,000 -19,596,000 -20,818,000 -17,879,000 -15,649,000 -17,339,000 -14,201,000 -16,576,000 -11,679,000 -15,686,000 -12,497,000 -13,627,000 -11,820,000 -13,815,000 -12,851,000 -10,667,000 -9,468,000 -9,286,000 -11,327,000 -11,109,000 -17,789,000 -16,904,000 -13,794,000 -13,458,000 -21,254,000 -10,038,000 -9,408,000 -9,922,000 -8,003,000 -11,822,000 -9,883,000      -9,833,000    -8,991,000 -6,924,000 -9,371,000  -7,042,000    -5,594,000    -5,416,000    -4,118,000    -3,703,000                             
      other non-operating income
    1,131,000 954,000 1,197,000 1,381,000 724,000 2,683,000 709,250 1,019,000 1,605,000 213,000   -664,000 -635,000 3,132,000 3,207,000 -944,000 3,678,000 18,376,000 2,297,000 -90,000 -127,000 -1,992,000 825,000 942,000 200,000 121,000 1,292,000 428,000 571,000 1,000,000 1,084,000                                                           
      interest expense
    -9,362,000 -11,716,000 -10,067,000 -9,061,000 -10,714,000 -10,684,000 -9,686,000 -10,128,000 -10,204,000 -12,239,000 -10,329,000 -8,932,000 -8,580,000 -7,330,000 -5,982,000 -5,651,000 -12,268,000 -6,972,000 -8,463,000 -9,360,000 -12,556,000 -14,041,000 -9,895,000 -9,543,000 -10,137,000 -8,846,000 -7,631,000 -7,294,000 -6,817,000 -6,632,000 -6,046,000 -6,653,000 -7,456,000 -7,483,000 -6,876,000 -6,198,000 -5,656,000 -3,901,000 -3,753,000 -4,002,000 -4,342,000 -4,486,000 311,000 -4,101,000 -3,901,000 -4,052,000 -4,057,000 -4,475,000 -4,795,000 -4,955,000   -3,548,000 -3,765,000   -4,557,000 -4,585,000   -3,148,000 -5,290,000   5,601,000 5,633,000  2,032,250 8,129,000 7,991,000 2,080,000 8,319,000 5,858,000 3,594,000 1,509,000 1,041,000 1,116,000 1,763,000 2,131,000 1,380,000 1,494,000 1,336,000  217,750 871,000 584,000 784,750 692,000 955,000  
      earnings before income taxes
    176,474,000 157,858,000 80,998,000 154,302,000 185,251,000 170,934,000 101,696,000 166,603,000 194,189,000 155,449,000 116,407,750 150,928,000 178,524,000 136,179,000        128,791,000 45,218,000 -148,565,000 94,210,000 54,861,000 -171,597,000 74,518,000 91,793,000 85,021,000 48,725,000 51,388,000 92,319,000 79,530,000 54,181,000 83,689,000 89,373,000 67,276,000 52,322,000 68,205,000 42,840,000 55,885,000 44,698,000 77,866,000 74,577,000 55,786,000 29,767,000 48,833,000 58,688,000 44,516,000   26,125,000 19,914,000   7,739,000 4,039,000   10,321,000 14,667,000   17,490,000 17,193,000  5,561,000 22,244,000 10,932,000 93,776,000 19,708,000 18,547,000 57,463,000 53,989,000 61,351,000 99,192,000 89,756,000 66,289,000 58,866,000 65,729,000 50,182,000  11,494,250 45,977,000 9,848,000 19,382,500 27,481,000 28,664,000 4,476,000 
      income taxes
    -39,091,000 -34,496,000 -14,518,000 -34,728,000 -41,731,000 -37,092,000 -24,597,000 -37,465,000 -43,636,000 -34,600,000 -22,606,000 -33,744,000 -39,529,000 -31,174,000 -15,898,000 -29,367,000 -29,190,000 -26,392,000 -13,431,000 -23,879,000 -19,800,000 -32,585,000   -22,417,000 -13,557,000 43,800,000 -16,803,000 -19,190,000 -18,682,000                -18,076,000    -14,415,000    -5,936,000    -982,000    -4,140,000   5,296,000 5,273,000  1,649,750 6,599,000 3,102,000    18,761,000 17,429,000 20,434,000 33,097,000 30,664,000 22,522,000 19,879,000 22,407,000 15,274,000  3,964,500 15,858,000  6,685,000 9,478,000 10,100,000  
      net earnings
    137,383,000 123,362,000 66,480,000 119,574,000 143,520,000 133,842,000 77,099,000 129,138,000 150,553,000 120,849,000 100,356,000 117,184,000 138,995,000 105,005,000 74,316,000 102,479,000 102,125,000 95,327,000 66,011,000 81,193,000 96,034,000 96,206,000 72,429,000 -114,632,000 71,793,000 41,304,000 -127,797,000 57,715,000 72,603,000 66,339,000 37,008,000 101,380,000 63,362,000 54,882,000 36,251,000 56,387,000 60,237,000 45,344,000 39,163,000 45,848,000 29,819,000 37,762,000 46,794,000 52,030,000 50,319,000 37,710,000 22,618,000 31,621,000 39,903,000 30,101,000   17,953,000 13,978,000   6,025,000 3,057,000   9,630,000 10,527,000   12,194,000 11,920,000  3,911,250 15,645,000 7,830,000    38,702,000 36,560,000 40,917,000 66,095,000 59,092,000 43,767,000 38,987,000 43,322,000 34,908,000  7,529,750 30,119,000  12,697,500 18,003,000 18,564,000  
      yoy
    -4.28% -7.83% -13.77% -7.41% -4.67% 10.75% -23.17% 10.20% 8.32% 15.09% 35.04% 14.35% 36.10% 10.15% 12.58% 26.22% 6.34% -0.91% -8.86% -170.83% 33.77% 132.92% -156.68% -298.62% -1.12% -37.74% -445.32% -43.07% 14.58% 20.88% 2.09% 79.79% 5.19% 21.03% -7.44% 22.99% 102.01% 20.08% -16.31% -11.88% -40.74% 0.14% 106.89% 64.54% 26.10% 25.28%   122.26% 115.35%   197.98% 357.25%   -37.44% -70.96%   -21.03% -11.69%   -22.06% 52.23%    -79.77%    -34.51% -16.47% 4.95% 52.57% 69.28%  417.77% 43.84%   -58.18% 62.24%      
      qoq
    11.37% 85.56% -44.40% -16.68% 7.23% 73.60% -40.30% -14.22% 24.58% 20.42% -14.36% -15.69% 32.37% 41.30% -27.48% 0.35% 7.13% 44.41% -18.70% -15.45% -0.18% 32.83% -163.18% -259.67% 73.82% -132.32% -321.43% -20.51% 9.44% 79.26% -63.50% 60.00% 15.45% 51.39% -35.71% -6.39% 32.84% 15.78% -14.58% 53.75% -21.03% -19.30% -10.06% 3.40% 33.44% 66.73% -28.47% -20.76% 32.56%    28.44%    97.09%    -8.52%    2.30%   -75.00% 99.81%     5.86% -10.65% -38.09% 11.85% 35.01% 12.26% -10.01% 24.10%   -75.00%   -29.47% -3.02%   
      net income margin %
    21.50% 19.44% 14.14% 21.43% 23.01% 21.99% 16.17% 23.11% 24.20% 20.09% 21.35% 22.91% 22.97% 18.70% 17.99% 22.14% 20.04% 20.04% 19.23% 20.06% 21.45% 22.48% 22.96% -32.73% 17.32% 11.15% -44.89% 17.32% 19.03% 16.85% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity%  NaN% Infinity% Infinity%  NaN% Infinity% Infinity%  NaN% Infinity% Infinity%  NaN% Infinity% Infinity%  Infinity% Infinity% Infinity% NaN% NaN% NaN% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity%  Infinity% Infinity% NaN% Infinity% Infinity% Infinity% NaN% 
      earnings per share
                                                                                              
      basic
    4.25 3.78 2.03 3.59 4.29 3.97 2.25 3.75 4.29 3.43 2.43 3.23 3.74 2.76        2.32 1.73 -2.77 1.73 0.94 -2.7 1.25 1.54 1.39 0.77 2.1 1.32 1.14 0.76 1.18 1.26 0.94 0.79 0.93 0.6 0.76 0.95 1.05 1.01 0.76 0.46 0.64 0.81 0.61   0.4 0.31   0.14 0.07   0.22 0.24   0.28 0.27  0.09 0.36 0.18    0.81 0.77 0.85 1.33 1.17 0.86 0.74 2.44 1.93  0.41 1.64  4,628,354.25 0.96 1.01  
      diluted
    4.23 3.76 2.02 3.56 4.26 3.94 2.23 3.72 4.26 3.4 2.415 3.2 3.72 2.75        2.31 1.72 -2.77 1.72 0.94 -2.68 1.24 1.53 1.38 0.76 2.08 1.31 1.13 0.75 1.17 1.25 0.93 0.79 0.92 0.59 0.75 0.93 1.03 0.75 0.46 0.63 0.8 0.6   0.4 0.31   0.14 0.07   0.22 0.24   0.28 0.27  0.09 0.36 0.18    0.8 0.76 0.83 1.32 1.16 0.85 0.73 2.41 1.91  0.405 1.62  4,663,816.25 0.95  
      weighted-average shares outstanding
                                                                                              
      basic
    32,297,313 32,624,075                                                                                         
      diluted
    32,469,833 32,808,568                                                                                         
      cash dividends per share
    0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25     0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1                0.1    0.1    0.1    0.1    0.1             0.131 0.175 0.175 0.175 0.075 0.1 0.3 0.3  0.075 0.3  0.038 0.05 0.05  
      average shares outstanding
                                                                                              
      basic
      -115,332 33,317,168 33,431,315 33,734,280 -119,818 34,466,141 35,056,973 35,274,753 -351,573 36,336,056 37,140,197 37,982,580 -549,654 40,049,456 41,222,161 42,028,619 91,266 41,494,149 41,450,013 41,410,794 -224,437 41,314,289 41,572,127 43,870,222 -438,514 46,275,198 47,219,532 47,690,351 8,950 48,221,093 48,053,733 48,121,890 30,149 47,881,662 47,809,476 48,014,195 -122,664 49,187,738 49,828,189 49,767,424 21,039 49,655,405 49,591,495 49,501,847 -726 49,294,010 49,012,045 48,955,724   44,746,225 44,670,359   44,200,291 44,180,039   43,855,326 43,832,372   43,630,040 43,581,646  10,870,011.75 43,480,047 43,421,927    47,951,048 12,353,766.75 48,354,882 49,584 50,335,024 13,342,463.25 52,556,763 17,749 18,105,313  4,601,657 18,406,628  0.685 18,670,273 18,462,107  
      diluted
      -125,265 33,608,538 33,716,036 33,993,023 -103,787 34,749,721 35,336,966 35,532,284 -342,644 36,605,982 37,366,879 38,222,949 -563,627 40,458,049 41,594,733 42,437,366 144,168 41,834,590 41,649,319 41,563,268 39,014 41,314,289 41,833,775 44,150,211 -470,891 46,495,994 47,563,818 48,144,325 4,556 48,757,762 48,504,767 48,655,553 20,960 48,297,748 48,229,485 48,522,207 -159,262 49,770,020 50,470,151 50,450,908 -3,376 50,411,147 50,427,286 50,287,452 -9,013 50,162,962 49,860,100 49,810,170   45,353,778 45,078,734   44,325,277 44,709,262   44,169,251 44,222,884   44,012,140 43,996,589  10,958,864.75 43,835,459 43,885,288    48,594,712 12,529,420.25 49,011,353 50,222 51,157,170 13,517,121 53,238,468 18,002 18,321,832  4,653,847 18,615,388  0.68 18,848,490 18,609,206  
      loss on early retirement of senior notes
                                                                                              
      other nonoperating income
              1,743,000 2,210,000                                                                               
      premium paid on early retirement of senior notes
                  -2,101,750  -8,407,000                                                                          
      gain on sale of businesses
                         51,973,000                                                                     
      earnings from continuing operations before income taxes
                  90,214,000 131,846,000 131,315,000 121,719,000 79,442,000 105,072,000 109,671,000                                                                      
      earnings from continuing operations
                  74,316,000 102,479,000 102,125,000 95,327,000 66,011,000 81,193,000 89,871,000                                                                      
      earnings from discontinued operations, net of income taxes
                        6,163,000                                                                      
      basic earnings per share
                                                                                              
      continuing operations
                  1.93 2.56 2.48 2.27 1.57 1.96 2.17                                                                      
      discontinued operations
                        0.15                                                                      
      diluted earnings per share
                                                                                              
      loss from discontinued operations, net of income taxes
                                                                                              
      impairment losses
                           -224,267,000                                                                   
      litigation settlements and losses
                                 -1,800,000                                                             
      income tax benefit
                          -510,250 33,933,000                                                                   
      revenues
                                  275,451,750 359,371,000 376,315,000 366,121,000 278,663,000 302,395,000 332,658,000 297,504,000 252,132,000 277,409,000 328,988,000 284,963,000 223,780,000 291,529,000 284,808,000 266,251,000 189,894,000 228,812,000 252,646,000 227,044,000   164,659,000 154,042,000   134,819,000 119,807,000   132,135,000 130,794,000         35,081,500 49,835,000 44,972,000             46,707,000    20,513,000 
      legal settlement
                                  -9,774,500 -39,098,000                                                           
      income tax expense
                                  -903,250 49,992,000 -28,957,000 -24,648,000 -19,592,500 -27,302,000 -29,136,000 -21,932,000 -13,375,250 -22,357,000 -13,021,000 -18,123,000 -17,042,500 -25,836,000 -24,258,000  -12,603,000 -17,212,000 -18,785,000    -8,172,000    -1,714,000    -691,000                              
      earnings per share:
                                                                                              
      basic
    4.25 3.78 2.03 3.59 4.29 3.97 2.25 3.75 4.29 3.43 2.43 3.23 3.74 2.76        2.32 1.73 -2.77 1.73 0.94 -2.7 1.25 1.54 1.39 0.77 2.1 1.32 1.14 0.76 1.18 1.26 0.94 0.79 0.93 0.6 0.76 0.95 1.05 1.01 0.76 0.46 0.64 0.81 0.61   0.4 0.31   0.14 0.07   0.22 0.24   0.28 0.27  0.09 0.36 0.18    0.81 0.77 0.85 1.33 1.17 0.86 0.74 2.44 1.93  0.41 1.64  4,628,354.25 0.96 1.01  
      diluted
    4.23 3.76 2.02 3.56 4.26 3.94 2.23 3.72 4.26 3.4 2.415 3.2 3.72 2.75        2.31 1.72 -2.77 1.72 0.94 -2.68 1.24 1.53 1.38 0.76 2.08 1.31 1.13 0.75 1.17 1.25 0.93 0.79 0.92 0.59 0.75 0.93 1.03 0.75 0.46 0.63 0.8 0.6   0.4 0.31   0.14 0.07   0.22 0.24   0.28 0.27  0.09 0.36 0.18    0.8 0.76 0.83 1.32 1.16 0.85 0.73 2.41 1.91  0.405 1.62  4,663,816.25 0.95  
      average shares outstanding:
                                                                                              
      basic
      -115,332 33,317,168 33,431,315 33,734,280 -119,818 34,466,141 35,056,973 35,274,753 -351,573 36,336,056 37,140,197 37,982,580 -549,654 40,049,456 41,222,161 42,028,619 91,266 41,494,149 41,450,013 41,410,794 -224,437 41,314,289 41,572,127 43,870,222 -438,514 46,275,198 47,219,532 47,690,351 8,950 48,221,093 48,053,733 48,121,890 30,149 47,881,662 47,809,476 48,014,195 -122,664 49,187,738 49,828,189 49,767,424 21,039 49,655,405 49,591,495 49,501,847 -726 49,294,010 49,012,045 48,955,724   44,746,225 44,670,359   44,200,291 44,180,039   43,855,326 43,832,372   43,630,040 43,581,646  10,870,011.75 43,480,047 43,421,927    47,951,048 12,353,766.75 48,354,882 49,584 50,335,024 13,342,463.25 52,556,763 17,749 18,105,313  4,601,657 18,406,628  0.685 18,670,273 18,462,107  
      diluted
      -125,265 33,608,538 33,716,036 33,993,023 -103,787 34,749,721 35,336,966 35,532,284 -342,644 36,605,982 37,366,879 38,222,949 -563,627 40,458,049 41,594,733 42,437,366 144,168 41,834,590 41,649,319 41,563,268 39,014 41,314,289 41,833,775 44,150,211 -470,891 46,495,994 47,563,818 48,144,325 4,556 48,757,762 48,504,767 48,655,553 20,960 48,297,748 48,229,485 48,522,207 -159,262 49,770,020 50,470,151 50,450,908 -3,376 50,411,147 50,427,286 50,287,452 -9,013 50,162,962 49,860,100 49,810,170   45,353,778 45,078,734   44,325,277 44,709,262   44,169,251 44,222,884   44,012,140 43,996,589  10,958,864.75 43,835,459 43,885,288    48,594,712 12,529,420.25 49,011,353 50,222 51,157,170 13,517,121 53,238,468 18,002 18,321,832  4,653,847 18,615,388  0.68 18,848,490 18,609,206  
      cash dividends per share:
                                  0.075 0.1 0.1 0.1 0.075 0.1 0.1 0.1 0.075 0.1 0.1 0.1 0.075 0.1 0.1  0.075 0.1 0.1    0.1    0.1    0.1    0.1 0.1  0.05 0.2 0.2    0.2                 
      corporate general and administrative
                                    -9,821,000 -9,679,000 -6,957,750 -9,166,000 -8,832,000  -6,664,750 -8,304,000 -9,364,000    -7,414,000  -4,612,500 -6,796,000 -6,060,000    -5,919,000    -4,472,000    -4,415,000    4,851,000 4,293,000  1,228,750 4,915,000 4,055,000    4,347,000 5,310,000 5,622,000 5,133,000 4,279,000 5,470,000 3,835,000 3,963,000 3,102,000  679,750 2,719,000  1,497,250 2,053,000 2,468,000  
      other income
                                    887,000 757,000 502,000 429,000 504,000 1,075,000 542,500 1,163,000 572,000 435,000 512,500 488,000 883,000 679,000 325,000 400,000 317,000 583,000   66,000 -270,000   115,000 -79,000   175,000 717,000                             
      acquisition and litigation expense
                                              -4,055,000 -722,000 -2,103,000        -5,713,000                                      
      equity in earnings of unconsolidated
                                                                                              
      joint venture
                                                        8,750,000                                      
      operating earnings
                                                            16,768,000 12,742,000   17,884,000 23,660,000                             
      earnings before interest and taxes
                                                            12,296,000    13,469,000                              
      earnings before interest and income taxes
                                                             8,624,000    19,957,000                             
      gypsum wallboard
                                                                    56,720,000 56,922,000  18,645,750 74,583,000 81,398,000 304,708,000 37,842,000 37,842,000 104,827,000 111,930,000 114,411,000 137,587,000 147,687,000 134,740,000 122,450,000 117,105,000 104,838,000  22,960,000 91,840,000  49,318,750 66,924,000 67,362,000  
      cement
                                                                    55,528,000 43,187,000  14,829,250 59,317,000 56,764,000 230,670,000 8,359,000 8,359,000 71,450,000 40,924,000 56,408,000 70,085,000 68,300,000 45,875,000 50,311,000 60,458,000 57,335,000  2,571,707,000 31,400,000  2,519,138,000 24,011,000 32,035,000  
      paperboard
                                                                    12,003,000 13,395,000  5,156,250 20,625,000 19,530,000 77,404,000 2,446,000 2,446,000 20,646,000 17,714,000 18,632,000 18,825,000 19,491,000 20,782,000 17,156,000 18,908,000 19,089,000  4,685,750 18,743,000  11,834,000 14,485,000 16,166,000  
      concrete and aggregates
                                                                    13,934,000 14,301,000  5,267,500 21,070,000 18,711,000    23,792,000 20,427,000 24,245,000 27,517,000 23,671,000 20,207,000 21,598,000 24,158,000 22,412,000  5,234,000 20,936,000  12,453,000 14,962,000 18,303,000  
      other
                                                                     87,000  834,750 3,339,000 400,000    522,000 785,000 483,000 2,454,000 825,000   1,155,000 1,124,000  48,250 193,000  491,500 937,000 770,000  
      revenues - sum
                                                                    138,185,000 127,892,000        221,237,000 191,780,000 214,179,000   159,524,500 211,515,000       95,089,500 121,319,000   
      costs and expenses
                                                                                             16,037,000 
      costs and expenses - sum
                                                                    125,760,000 118,000,000        169,950,000 145,962,000 160,424,000   120,445,500 158,701,000       80,434,250 101,051,000   
      gross margin
                                                                          13,613,000 21,096,000 19,803,000             11,479,000     
      current assets
                                                                           46,320,000 46,469,000             51,739,000     
      non-current assets
                                                                           47,048,000 48,123,000             64,015,000     
      current liabilities
                                                                           15,998,000 12,912,000             14,401,000     
      interest
                                                                          -218,750 -686,000 -115,000                  
      other incomes
                                                                          83,750 115,000 110,000             124,000     
      interest capitalized
                                                                          -1,197,000 -1,937,000 -1,592,000                  
      equity in earnings of unconsolidated joint ventures
                                                                              8,171,000 7,596,000   8,456,000 6,052,000  5,527,000  2,197,250 8,789,000  4,727,250 7,213,000 -7,220,000  
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-09-30 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 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 
                                                                                                
        assets
                                                                                                
        current assets
                                                                                                
        cash and cash equivalents
      35,033,000 59,739,000 20,401,000 31,173,000 93,909,000 46,540,000 34,925,000 48,912,000 47,321,000 53,149,000 15,242,000 60,937,000 84,140,000 68,281,000 19,416,000 17,392,000 45,214,000 306,542,000 263,520,000 142,784,000 200,858,000 199,441,000 118,648,000 126,255,000 53,684,000 19,162,000 8,601,000 17,060,000 10,002,000 14,334,000 9,315,000 21,676,000 31,056,000 12,233,000 6,561,000 164,665,000 54,506,000 9,180,000 5,391,000 15,756,000 6,348,000 7,551,000 7,514,000 13,697,000 11,063,000 6,541,000 6,482,000 7,424,000 10,628,000 6,744,000 3,897,000 9,247,000 8,149,000 3,707,000 6,481,000 3,679,000 10,692,000 3,478,000 1,874,000 4,053,000 8,001,000 2,997,000 1,416,000 22,442,000 4,411,000 1,039,000 17,798,000 47,824,000 17,018,000 14,519,000 18,960,000 65,820,000 20,965,000 23,463,000 17,215,000 61,797,000 76,317,000 97,233,000 54,766,000 60,174,000 11,045,000 14,578,000 7,221,000 18,539,000 6,383,000 5,023,000 3,536,000 29,376,000 10,463,000 11,542,000 
        accounts receivable
      250,773,000 263,398,000 212,332,000               187,411,000                                                                         
        inventories
      370,207,000 393,401,000 415,175,000 392,266,000 375,602,000 371,619,000 373,923,000 333,828,000 301,374,000 302,525,000 291,882,000 247,155,000 225,835,000 233,543,000 236,661,000 211,978,000 203,745,000 217,052,000 235,749,000 228,667,000 227,106,000 243,125,000 272,508,000 234,264,000 241,599,000 263,612,000 275,194,000 251,260,000 238,869,000 241,000,000 258,159,000 239,628,000 239,189,000 244,886,000 252,846,000 222,783,000 217,582,000 240,999,000 243,595,000 232,447,000 224,667,000 234,741,000 235,464,000 207,043,000 190,711,000 182,470,000 187,096,000 173,871,000 162,094,000 164,197,000 156,380,000 134,473,000 109,004,000 114,441,000 123,606,000 113,613,000 108,156,000 114,124,000 115,237,000 111,012,000 102,952,000 106,505,000 105,871,000 99,515,000 95,180,000 104,383,000 107,063,000 102,246,000 103,173,000 103,972,000 98,717,000 85,998,000 81,273,000 81,718,000 78,908,000 66,663,000 67,641,000 67,401,000 67,799,000 67,111,000 60,927,000 55,981,000 63,482,000 46,609,000 44,388,000 44,606,000 48,890,000 44,049,000 43,444,000 54,894,000 
        income tax receivable
      1,725,000 1,384,000 10,020,000 1,743,000 2,474,000 2,605,000 9,910,000 2,917,000 8,144,000 1,410,000 16,267,000 5,466,000 4,371,000 2,610,000 7,202,000 8,890,000 17,954,000  2,838,000 1,900,000 28,671,000 123,709,000 128,413,000    5,480,000 314,000 5,924,000 7,315,000 5,750,000      1,046,000  5,623,000 5,319,000           2,443,000    1,133,000 9,109,000 6,688,000 5,374,000 9,088,000                                
        prepaid and other assets
      13,562,000 14,443,000 10,729,000 10,901,000 12,115,000 13,797,000 5,950,000 9,092,000 10,135,000 10,310,000 3,060,000 5,177,000 5,933,000 8,001,000 3,172,000 6,426,000 8,534,000 15,298,000 7,449,000 7,740,000 9,634,000 10,754,000 6,862,000 6,997,000 9,083,000 9,464,000 9,624,000 6,966,000 7,751,000 8,304,000 5,073,000 20,378,000 7,440,000 8,181,000 4,904,000 5,959,000 6,761,000 8,020,000 5,173,000 8,013,000 9,026,000 10,110,000 10,080,000 4,995,000 6,309,000 8,290,000 10,465,000 5,074,000 8,235,000 9,606,000 11,008,000 13,015,000 2,588,000 3,366,000 4,424,000 3,045,000 2,856,000 3,836,000 4,572,000 2,464,000 2,758,000 3,508,000 4,266,000 4,553,000 4,507,000 5,105,000 6,161,000                        
        total current assets
      671,300,000 732,365,000 668,657,000 618,462,000 730,449,000 712,989,000 627,693,000 587,731,000 611,806,000 616,041,000 521,503,000 491,278,000 552,874,000 547,139,000 442,727,000 415,347,000 472,111,000 731,303,000 661,689,000 528,558,000 648,407,000 771,593,000 678,217,000 507,799,000 487,055,000 466,517,000 427,621,000 409,473,000 437,096,000 493,789,000 458,735,000 425,344,000 446,810,000 440,302,000 400,624,000 508,685,000 435,136,000 400,497,000 380,003,000 365,394,000 395,000,000 388,098,000 366,635,000 362,558,000 340,906,000 331,409,000 306,960,000 282,726,000 300,705,000 298,381,000 261,271,000 243,323,000 193,807,000 194,818,000 191,841,000 183,937,000 192,839,000 181,004,000 174,626,000 159,783,000 170,829,000 166,584,000 161,274,000 164,772,000 163,010,000 167,419,000 175,283,000 200,684,000 192,873,000 190,841,000 180,626,000 205,035,000 179,099,000 189,854,000 173,609,000 197,823,000 241,521,000 270,419,000 216,626,000 207,516,000 164,025,000 156,424,000 141,655,000 124,312,000 113,092,000 114,253,000 106,778,000    
        property, plant, and equipment
      1,909,715,000 1,840,845,000 1,792,982,000 1,736,159,000 1,724,288,000 1,676,041,000 1,676,217,000 1,667,915,000 1,676,738,000 1,679,919,000 1,662,061,000 1,641,638,000 1,655,616,000 1,638,164,000 1,616,539,000 1,626,990,000 1,629,133,000 1,641,063,000 1,659,100,000 1,680,646,000 1,706,200,000 1,726,363,000 1,762,109,000 1,269,733,000 1,456,059,000 1,424,703,000 1,426,939,000 1,627,152,000 1,624,738,000 1,617,535,000 1,595,299,000                                                            
        investment in joint venture
      150,202,000 143,893,000 140,089,000 135,672,000 130,685,000 121,409,000 113,478,000 104,822,000 100,115,000 89,770,000 89,111,000 85,268,000 85,391,000 81,235,000 80,637,000 79,434,000 77,628,000 76,369,000 75,399,000 74,914,000 74,331,000 72,254,000 73,958,000 71,862,000 71,662,000 71,305,000 64,873,000 61,988,000 60,482,000 60,309,000 60,558,000 55,337,000 52,960,000 53,750,000 48,620,000 47,600,000 47,852,000 48,700,000 49,465,000 50,372,000 49,883,000 49,199,000 47,614,000 47,167,000 45,489,000 44,434,000 43,008,000 41,178,000 40,071,000 41,074,000 42,946,000 41,760,000 39,908,000 39,407,000 38,939,000 37,571,000 35,545,000 34,109,000 33,661,000 31,546,000 30,350,000 33,190,000 33,928,000 33,797,000 34,887,000 38,072,000 39,521,000 38,016,000 39,085,000 38,981,000 40,095,000 39,166,000 41,312,000 42,039,000  42,692,000 35,096,000 27,594,000  25,642,000 26,340,000 26,707,000         
        operating lease right-of-use assets
      30,991,000 31,866,000 29,313,000 34,227,000 17,316,000 17,970,000 19,373,000 20,670,000 22,068,000 25,155,000 20,759,000 20,651,000 22,126,000 22,960,000 23,856,000 23,923,000 25,127,000 24,776,000 25,811,000 26,927,000 28,139,000 29,904,000 30,530,000 29,346,000                                                                   
        goodwill and intangible assets
      590,560,000 593,163,000 595,752,000 487,388,000 489,232,000 484,298,000 486,117,000 488,088,000 490,180,000 490,828,000 466,043,000 467,703,000 469,491,000 455,824,000 387,898,000 389,002,000 390,107,000 391,211,000 392,315,000 393,454,000 394,524,000 395,673,000 396,463,000 230,099,000 230,770,000 228,316,000 229,115,000 236,936,000 237,738,000 238,541,000 239,342,000 240,145,000 240,947,000 234,707,000 235,505,000 161,765,000 162,506,000 163,298,000 165,827,000 174,916,000 177,069,000 207,047,000 211,167,000 206,208,000 159,835,000 160,262,000 160,690,000 161,117,000 161,432,000 161,916,000 162,400,000 163,802,000 150,584,000 150,743,000 150,902,000 151,061,000 151,221,000 151,380,000 151,539,000 151,698,000 151,857,000 152,016,000 152,175,000 152,335,000 152,494,000 152,653,000 152,812,000 152,971,000 153,131,000 153,290,000 153,449,000 69,740,000 69,900,000 70,058,000 70,218,000 67,377,000 67,536,000 67,695,000 67,854,000 68,013,000 68,552,000 66,879,000 66,960,000        
        other assets
      56,510,000 55,182,000 37,795,000 31,762,000 29,833,000 30,160,000 24,141,000 21,114,000 16,187,000 14,533,000 14,143,000 15,076,000 15,150,000 17,071,000 19,510,000 16,939,000 17,237,000 17,623,000 15,948,000 12,186,000 11,395,000 10,309,000 10,604,000 12,194,000 10,703,000 12,121,000 17,717,000 16,845,000 16,314,000 13,535,000 13,954,000 12,197,000 11,445,000 15,110,000 14,723,000 27,101,000 27,132,000 27,588,000 30,357,000 28,921,000 33,306,000 32,209,000 32,509,000 34,402,000 15,007,000 14,468,000 13,757,000 14,631,000 14,377,000 20,278,000 19,999,000 21,590,000 22,971,000 19,224,000 19,519,000 19,155,000 18,685,000 18,376,000 17,828,000 26,542,000 24,214,000 23,480,000 23,344,000 24,065,000 23,852,000 23,446,000 22,810,000 27,115,000 26,810,000 26,801,000 27,835,000 104,304,000 100,434,000 101,460,000 22,271,000 18,503,000 17,930,000 15,384,000 19,027,000 15,992,000 16,191,000 16,752,000 18,846,000 15,599,000 14,914,000 14,914,000 13,599,000 12,692,000 11,200,000 12,374,000 
        total assets
      3,409,278,000 3,397,314,000 3,264,588,000 3,043,670,000 3,121,803,000 3,042,867,000 2,947,019,000 2,890,340,000 2,917,094,000 2,916,246,000 2,781,002,000 2,730,170,000 2,809,149,000 2,770,859,000              2,355,416,000 2,379,512,000                                                              
        liabilities and stockholders’ equity
                                                                                                
        current liabilities
                                                                                                
        accounts payable
      132,917,000 136,225,000 129,895,000 118,718,000 131,411,000 148,231,000 127,183,000 117,270,000 113,737,000 118,026,000 110,408,000 106,571,000 113,722,000 108,578,000 113,679,000 99,465,000 101,293,000 96,923,000 84,171,000 71,596,000 80,130,000 81,985,000 86,197,000 65,035,000 77,656,000 83,916,000 80,884,000 77,611,000 92,479,000 93,182,000 73,459,000 73,203,000 79,194,000 78,763,000 92,193,000 63,847,000 62,481,000 61,322,000 66,614,000 61,327,000 70,584,000 61,037,000 77,749,000 68,466,000 66,953,000 57,803,000 57,098,000 47,586,000 50,878,000 54,983,000 58,880,000 47,460,000 34,730,000 34,517,000 38,747,000 33,344,000 35,285,000 31,472,000 30,339,000 30,464,000 31,954,000 27,381,000 27,840,000 16,460,000 22,813,000 23,967,000 19,645,000 25,140,000 39,286,000 53,091,000 50,961,000 41,303,000 65,320,000 48,412,000 52,359,000 42,982,000 51,484,000 55,444,000 51,562,000 58,377,000 50,587,000 49,166,000 40,687,000 35,013,000 35,546,000 33,410,000 31,470,000    
        accrued liabilities
      92,823,000 87,677,000 96,077,000 86,999,000 95,337,000 89,537,000 94,327,000 88,178,000 90,815,000 75,186,000 86,472,000 83,759,000 91,515,000 88,280,000 86,754,000 87,206,000 80,324,000 74,947,000 78,840,000 84,914,000 76,145,000 75,482,000 73,293,000 67,670,000 66,373,000 56,636,000 61,949,000 66,921,000 62,223,000 95,910,000 105,870,000 101,432,000 59,788,000 53,288,000 55,379,000 57,649,000 53,793,000 40,509,000 45,975,000 46,750,000 50,066,000 36,373,000 46,830,000 45,269,000 47,845,000 34,894,000 41,520,000 39,622,000 40,785,000 36,320,000 41,349,000 57,460,000 42,602,000 30,275,000 33,619,000 42,456,000 42,939,000 33,388,000 40,011,000 35,919,000 42,172,000 35,270,000 44,044,000 38,086,000 45,295,000 37,386,000 44,604,000 46,909,000 52,277,000 45,068,000 56,315,000 57,273,000 71,340,000 63,187,000 55,665,000 59,365,000 57,669,000 49,378,000 53,137,000 56,396,000 48,134,000 41,835,000 50,382,000 43,846,000 43,820,000 35,707,000 38,521,000    
        operating lease liabilities
      4,522,000 4,688,000 4,032,000 5,074,000 6,029,000 7,008,000 7,899,000 8,217,000 8,205,000 8,181,000 6,009,000 6,006,000 6,736,000 6,778,000 7,118,000 7,004,000 7,028,000 6,127,000 6,343,000 6,551,000 6,810,000 10,436,000 10,207,000 10,601,000 11,315,000 11,990,000                                                                 
        income taxes payable
      1,949,000 24,768,000   69,450,000    1,778,000   1,964,000 1,348,000     11,016,000    32,130,000  20,020,000 2,931,000 3,914,000            9,919,000   5,108,000 11,606,000  1,508,000 8,610,000 19,956,000  6,835,000 10,028,000 10,904,000  5,532,000 11,455,000 8,192,000  3,392,000                                   
        current portion of long-term debt
      15,000,000 15,000,000 15,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000 10,000,000            36,500,000 36,500,000 36,500,000 36,500,000     81,214,000 81,214,000 81,214,000 81,214,000 8,000,000 8,000,000 8,000,000 8,000,000 57,045,000 57,045,000 57,045,000 57,045,000 9,500,000 9,500,000 9,500,000 9,500,000     4,677,000 4,677,000 4,677,000 4,677,000                            80,000 80,000 80,000 80,000 80,000 80,000 80,000 
        total current liabilities
      247,211,000 268,358,000 245,004,000 223,881,000 312,227,000 290,550,000 239,409,000 225,513,000 224,535,000 229,697,000 212,889,000 208,300,000 223,321,000 228,635,000 207,551,000 193,675,000 188,645,000 189,013,000 169,354,000 163,061,000 163,085,000 200,033,000 169,697,000 163,326,000 194,775,000 192,956,000 179,333,000 181,032,000 154,702,000 189,092,000 179,329,000 174,635,000 221,407,000 239,727,000 229,519,000 207,925,000 124,274,000 119,750,000 120,589,000 116,077,000 182,803,000 166,061,000 184,576,000 172,288,000 132,908,000 122,153,000 108,820,000 103,543,000 101,691,000 102,207,000 100,229,000 110,452,000 93,464,000 77,661,000 77,043,000 83,869,000 78,224,000 64,860,000 70,350,000 66,383,000 84,126,000 79,633,000 71,884,000 58,363,000 71,954,000 68,386,000 64,249,000 74,519,000 91,910,000 101,049,000 107,276,000 104,623,000 166,597,000 152,375,000 108,024,000 111,211,000 121,590,000 131,699,000 104,699,000 114,773,000 146,921,000 145,756,000 121,869,000 116,834,000 114,323,000 111,871,000 94,171,000    
        long-term debt
      1,271,450,000 1,294,883,000 1,223,316,000 991,749,000 1,063,933,000 1,091,116,000 1,083,299,000 1,022,482,000 1,079,665,000 1,141,848,000 1,079,032,000 1,054,215,000 1,126,398,000 1,119,582,000 938,265,000 837,949,000 812,632,000 1,009,035,000 1,008,616,000 1,008,345,000 1,252,716,000 1,492,088,000 1,567,315,000 930,594,000 930,426,000 840,259,000 655,092,000 589,924,000 631,257,000 651,090,000 620,922,000 565,755,000 575,588,000 580,421,000 605,253,000 380,134,000 461,182,000 490,714,000 499,714,000 492,714,000 452,714,000 466,714,000 455,714,000 460,714,000 302,759,000 358,759,000 371,759,000 382,759,000 455,259,000 497,259,000 489,259,000 483,259,000 212,259,000 249,259,000 262,259,000 276,259,000 285,000,000 296,000,000 287,000,000 290,000,000 285,000,000 285,000,000 303,000,000 300,000,000 300,000,000 325,000,000 355,000,000 400,000,000 400,000,000 410,000,000 400,000,000 400,000,000 320,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 200,000,000 45,000,000 55,000,000 54,000,000  19,000,000 39,000,000 58,700,000 80,000 31,080,000 62,090,000 
        noncurrent operating lease liabilities
      34,248,000 35,123,000 33,597,000 34,951,000 17,628,000 17,902,000 19,037,000 20,685,000 22,699,000 26,549,000 24,940,000 25,398,000 26,736,000 28,074,000 29,212,000 29,960,000 31,683,000 32,763,000 34,444,000 35,896,000 37,419,000 47,478,000 49,809,000 51,939,000 56,586,000 55,884,000                                                                 
        other long-term liabilities
      66,240,000 64,498,000 66,029,000 50,696,000 50,633,000 49,916,000 51,942,000 42,331,000 39,891,000 40,585,000 41,603,000 37,147,000 37,423,000 35,871,000 38,699,000 37,618,000 45,278,000 40,902,000 41,291,000 41,495,000 41,586,000 44,667,000 39,689,000 36,648,000 35,371,000 30,257,000 34,492,000 30,554,000 31,099,000 30,158,000 31,096,000 35,112,000 44,038,000 42,026,000 42,878,000 57,514,000 59,922,000 58,642,000 61,122,000 70,673,000 70,425,000 68,876,000 69,055,000 84,911,000 54,070,000 53,177,000 53,678,000 52,317,000 53,334,000 52,079,000 51,547,000 41,104,000 39,747,000 39,774,000 39,467,000 35,268,000 38,097,000 37,905,000 37,807,000 40,778,000 40,330,000 68,726,000 67,946,000 100,090,000 98,803,000 97,903,000 97,104,000 88,521,000 86,859,000 85,134,000 84,342,000                    
        deferred income taxes
      253,071,000 242,678,000 239,942,000 246,254,000 245,733,000 242,585,000 244,797,000 246,168,000 243,670,000 239,156,000 236,844,000 239,596,000 238,567,000 234,916,000 232,369,000 238,671,000 234,281,000 227,785,000 225,986,000 215,059,000 208,446,000 162,940,000 166,667,000 50,391,000 98,298,000 94,456,000 90,759,000 133,569,000 129,851,000 125,156,000 118,966,000 116,352,000 167,335,000 162,329,000 166,024,000 164,841,000 164,027,000 163,536,000 161,679,000 159,790,000 144,617,000 158,472,000 162,653,000 167,116,000 142,259,000 142,094,000 145,773,000 143,217,000 135,571,000 138,220,000 139,028,000 134,458,000 127,307,000 129,760,000 133,865,000 127,562,000 127,077,000 127,689,000 128,089,000 124,503,000 124,761,000 122,424,000 125,584,000 118,890,000 119,171,000 119,473,000 122,488,000 116,648,000 114,165,000 115,314,000 117,542,000 183,219,000 186,742,000 188,630,000 117,340,000 115,442,000 115,288,000 117,995,000 119,479,000 115,828,000 115,468,000 115,404,000 118,764,000 107,228,000 105,199,000 104,046,000 101,082,000 96,001,000 90,392,000 84,794,000 
        total liabilities
      1,872,220,000 1,905,540,000 1,807,888,000 1,547,531,000 1,690,154,000 1,692,069,000 1,638,484,000 1,557,179,000 1,610,460,000 1,677,835,000 1,595,308,000 1,564,656,000 1,652,445,000 1,647,078,000 1,446,096,000 1,337,873,000 1,312,519,000 1,499,498,000 1,479,691,000 1,463,856,000 1,703,252,000 1,947,206,000 1,993,177,000 1,232,898,000 1,315,456,000 1,213,812,000 959,676,000 935,079,000 946,909,000 995,496,000 950,313,000 891,854,000 1,008,368,000 1,024,503,000 1,043,674,000 810,414,000 809,405,000 832,642,000 843,104,000 839,254,000 850,559,000 860,123,000 871,998,000 885,029,000 631,996,000 676,183,000 680,030,000 681,836,000 745,855,000 789,765,000 780,063,000 769,273,000 472,777,000 496,454,000 512,634,000 522,958,000 528,398,000 526,454,000 523,246,000 521,664,000 534,217,000 555,783,000 568,414,000 577,343,000 589,928,000 610,762,000 638,841,000 679,688,000 692,934,000 711,497,000 709,160,000                    
        stockholders’ equity
                                                                                                
        preferred stock, par value 0.01; authorized 5,000,000 shares; none issued
                                                                                                
        common stock
      322,000 326,000 330,000 334,000 335,000 338,000 341,000 345,000 350,000 354,000 358,000 362,000 371,000 380,000 387,000 398,000 409,000 421,000 424,000 419,000 418,000 418,000 416,000 416,000 416,000 429,000 451,000 462,000 472,000 479,000 483,000 487,000 486,000 485,000 485,000 484,000 482,000 484,000 485,000 493,000 503,000 504,000 502,000 503,000 503,000 502,000 501,000 500,000 497,000 496,000 495,000 494,000 454,000 454,000 453,000 449,000 449,000 449,000 444,000 442,000 442,000 442,000 438,000 438,000 437,000 436,000 436,000 435,000 435,000 435,000 434,000 440,000 444,000 480,000 479,000 483,000 491,000 504,000 503,000 504,000 177,000 178,000 182,000 183,000 183,000 185,000 188,000 188,000 185,000 184,000 
        capital in excess of par value
                       10,035,000 62,497,000 30,516,000 18,584,000 14,571,000 10,943,000 8,325,000 2,990,000    7,752,000 74,568,000 122,379,000 156,834,000 150,029,000 151,141,000 149,014,000 143,623,000 130,638,000 144,076,000 168,969,000 211,781,000 273,372,000 277,026,000 272,441,000 269,736,000 266,212,000 257,407,000 253,524,000 246,161,000 231,836,000 228,034,000 224,053,000 216,440,000 44,208,000 39,564,000 37,692,000 29,235,000 26,882,000 25,439,000 24,859,000 19,450,000 18,066,000 16,352,000 14,723,000 16,878,000 14,397,000 12,595,000 11,166,000 6,576,000 4,255,000 1,512,000    4,003,000    3,220,000      143,000  13,849,000 28,223,000 30,351,000 19,439,000 15,808,000 
        accumulated other comprehensive losses
      -3,043,000 -3,084,000 -3,125,000 -3,238,000 -3,283,000 -3,328,000 -3,373,000 -3,403,000 -3,451,000 -3,499,000 -3,547,000 -3,105,000 -3,128,000 -3,152,000 -3,175,000 -3,359,000 -3,386,000 -3,413,000 -3,440,000 -3,251,000 -3,276,000 -3,302,000 -3,581,000 -3,215,000 -3,248,000 -3,283,000 -3,316,000 -3,844,000 -3,900,000 -3,956,000 -4,012,000 -6,805,000 -7,002,000 -7,199,000 -7,396,000 -10,473,000 -10,785,000 -11,097,000 -11,409,000 -11,109,000 -11,428,000 -11,748,000 -12,067,000 -5,165,000 -5,271,000 -5,377,000 -5,483,000 -6,577,000 -6,732,000 -6,887,000 -7,042,000 -5,168,000 -5,284,000 -5,400,000 -5,516,000 -2,893,000 -2,893,000 -2,893,000 -2,893,000 -3,518,000 -3,518,000 -3,518,000 -3,518,000 -6,040,000 -6,040,000 -6,040,000 -6,040,000 -1,368,000 -1,368,000 -1,368,000 -1,368,000 -850,000 -850,000 -850,000 -850,000 -1,404,000 -1,404,000 -1,404,000 -1,404,000 -1,842,000 -1,842,000 -1,842,000 -1,842,000 -1,877,000 -1,877,000 -1,877,000 -1,877,000 -1,703,000 -1,703,000 -1,774,000 
        retained earnings
      1,539,779,000 1,494,532,000 1,459,495,000 1,499,043,000 1,434,597,000 1,353,788,000 1,311,567,000 1,336,219,000 1,309,735,000 1,241,556,000 1,188,883,000 1,168,257,000 1,159,461,000 1,126,553,000 1,136,344,000 1,225,209,000 1,310,286,000 1,384,289,000 1,299,509,000 1,233,498,000 1,152,305,000 1,056,271,000 960,065,000 891,801,000 1,010,597,000 1,058,120,000 1,212,352,000 1,423,719,000 1,428,279,000 1,360,388,000 1,298,840,000 1,265,673,000 1,169,160,000 1,110,660,000 1,061,347,000 1,029,941,000 978,395,000 922,980,000 882,486,000 848,151,000 807,244,000 782,443,000 749,717,000 707,948,000 660,947,000 615,652,000 582,957,000 565,344,000 538,719,000 503,809,000 478,664,000 475,781,000 462,733,000 449,324,000 439,882,000 435,400,000 437,297,000 435,762,000 437,154,000 452,405,000 451,328,000 439,830,000 433,719,000 437,948,000 437,645,000 429,824,000 422,265,000 419,595,000 412,690,000 405,754,000 406,621,000 435,134,000 420,047,000 540,912,000 546,417,000 538,203,000 528,800,000 515,910,000 465,639,000 434,421,000 513,088,000 483,577,000 487,585,000 475,717,000 454,945,000 430,732,000 413,079,000 515,486,000 498,422,000 480,783,000 
        total stockholders’ equity
      1,537,058,000 1,491,774,000 1,456,700,000 1,496,139,000 1,431,649,000 1,350,798,000 1,308,535,000 1,333,161,000 1,306,634,000 1,238,411,000 1,185,694,000 1,165,514,000 1,156,704,000 1,123,781,000 1,133,556,000 1,222,248,000 1,307,309,000 1,391,332,000 1,358,990,000 1,261,182,000 1,168,031,000 1,067,958,000 967,843,000 897,327,000 1,010,755,000 1,055,266,000 1,209,487,000 1,420,337,000 1,432,603,000 1,431,479,000 1,417,690,000 1,416,189,000 1,312,673,000 1,255,087,000 1,203,450,000 1,163,575,000 1,098,730,000 1,056,443,000 1,040,531,000 1,049,316,000 1,069,691,000 1,048,225,000 1,010,593,000 973,022,000 922,391,000 868,184,000 831,499,000 805,428,000 764,320,000 725,452,000 696,170,000 687,547,000 502,111,000 483,942,000 472,511,000 462,191,000 461,735,000 458,757,000 459,564,000 468,779,000 466,318,000 453,106,000 445,362,000 449,224,000 446,439,000 436,815,000 427,827,000 425,238,000 416,012,000 406,333,000 405,687,000 434,724,000 419,641,000 544,545,000 546,046,000 537,282,000 527,887,000 518,230,000 464,738,000 433,083,000 511,423,000 481,913,000 485,368,000 473,601,000 452,678,000 442,307,000 439,022,000 543,672,000   
        accounts and notes receivable
         182,379,000 246,349,000 278,428,000 202,985,000 192,982,000 244,832,000 248,647,000 195,052,000 172,543,000 232,595,000 234,704,000 176,276,000 170,661,000 196,664,000  147,133,000 142,467,000 177,138,000 194,564,000 151,786,000 140,283,000 182,689,000 174,279,000 128,722,000 133,873,000 174,550,000 184,083,000 141,685,000 143,662,000 169,125,000 175,002,000 136,313,000 115,278,000 155,241,000 142,298,000 120,221,000 103,859,000 154,959,000 135,696,000 113,577,000 136,823,000 132,823,000 134,108,000 102,917,000 96,357,000 119,748,000 117,834,000 87,543,000 86,588,000 74,066,000 73,304,000 56,197,000 54,491,000 64,447,000 54,192,000 43,855,000 42,254,000 54,744,000 53,574,000 49,721,000 38,262,000 58,912,000 56,892,000 44,261,000 50,614,000 72,682,000 72,350,000 62,949,000 53,217,000 76,861,000 84,673,000 77,486,000 69,363,000 97,563,000 105,785,000 94,061,000 80,231,000 92,053,000 85,865,000 70,952,000 59,164,000 62,321,000 64,624,000 54,352,000 42,460,000 55,599,000 62,221,000 
        income tax payable
         3,090,000  35,774,000  1,848,000  18,304,000    24,999,000                   1,211,000 26,462,000 733,000 5,215,000       2,952,000    702,000                                            
        total liabilities and stockholders’ equity
         3,043,670,000 3,121,803,000   2,890,340,000 2,917,094,000   2,730,170,000 2,809,149,000                                                                              
        notes receivable
                7,382,000 8,556,000 8,501,000 8,466,000 8,485,000 8,486,000 8,485,000 8,485,000 8,419,000 8,353,000 8,287,000 9,068,000 9,139,000 9,192,000 6,436,000 2,772,000 2,898,000 3,022,000 3,144,000 3,266,000 115,000 296,000 476,000 653,000 815,000 1,002,000 1,158,000 2,652,000 2,672,000 2,716,000 2,760,000 2,803,000 2,847,000 2,890,000 2,966,000 3,197,000 3,063,000 3,208,000 3,488,000 3,677,000 3,893,000 3,273,000 3,316,000 3,360,000 3,436,000 3,448,000 5,005,000 5,139,000 5,326,000 13,150,000 9,857,000 10,201,000 10,586,000 7,024,000 7,315,000 6,000,000 6,301,000 6,828,000 7,026,000 7,100,000 7,286,000 7,546,000 7,992,000 8,224,000 8,270,000 8,565,000            118,000 112,000 929,000 
        current assets -
                                                                                                
        restricted cash
                       5,000,000 5,000,000 5,000,000 5,000,000         38,753,000 38,753,000                                                            
        current liabilities -
                                                                                                
        stockholders’ equity –
                                                                                                
        current assets of discontinued operations
                                                                                                
        assets of discontinued operations
                                                                                                
        current liabilities of discontinued operations
                                                                                                
        liabilities of discontinued operations
                                                                                                
        operating lease right of use assets
                              63,526,000 63,344,000                                                                 
        property, plant, and equipment -
                                 2,659,148,000 2,636,249,000 2,627,261,000 2,586,528,000                                                            
        less: accumulated depreciation
                                 -1,031,996,000 -1,011,511,000 -1,009,726,000 -991,229,000 -972,706,000 -946,934,000 -919,732,000 -892,601,000 -870,859,000 -855,148,000 -837,242,000 -817,465,000 -799,494,000 -779,010,000 -759,979,000 -740,396,000 -724,351,000 -708,311,000 -691,946,000 -676,924,000 -662,734,000 -646,142,000 -630,317,000 -614,268,000 -598,396,000 -584,773,000 -572,351,000 -560,236,000 -548,284,000 -536,057,000 -524,143,000 -512,228,000 -503,063,000 -491,788,000 -480,198,000 -468,121,000 -455,960,000 -443,948,000 -432,194,000 -419,669,000 -407,514,000 -395,921,000 -386,558,000 -374,186,000 -362,460,000 -352,963,000 -343,875,000 -333,641,000 -325,436,000 -316,488,000 -307,054,000 -298,665,000 -290,902,000 -282,004,000 -273,231,000 -264,088,000 -255,555,000 -250,031,000 -242,699,000 -234,929,000 -227,936,000 -221,617,000 -267,011,000 
        property, plant and equipment -
                                     2,547,430,000 2,515,337,000 2,454,800,000 2,439,438,000 2,098,695,000 2,089,499,000 2,083,592,000 2,072,776,000 2,065,745,000 2,041,242,000 1,988,971,000 1,962,215,000 1,929,177,000 1,698,495,000 1,682,543,000 1,660,975,000 1,647,138,000 1,636,244,000 1,620,208,000 1,599,992,000 1,581,468,000 1,149,075,000 1,145,195,000 1,140,744,000 1,138,261,000 1,122,895,000 1,119,346,000 1,112,058,000 1,110,787,000 1,105,216,000 1,103,616,000 1,100,590,000 1,100,534,000 1,098,757,000 1,092,181,000 1,089,610,000 1,086,826,000 1,085,942,000 1,087,375,000    1,017,790,000     856,227,000 837,423,000   788,447,000    715,734,000 713,600,000 712,398,000  
        property, plant and equipment
                                     1,574,724,000 1,568,403,000 1,535,068,000 1,546,837,000 1,227,836,000 1,234,351,000 1,246,350,000 1,255,311,000 1,266,251,000 1,262,232,000 1,228,992,000 1,221,819,000 1,204,826,000 990,184,000 990,597,000 984,051,000 984,404,000 990,102,000 989,891,000 985,724,000 983,072,000 564,302,000 572,844,000 580,508,000 589,977,000 586,838,000 595,203,000 599,830,000 607,724,000 613,428,000 623,418,000 632,469,000 644,574,000 654,809,000 659,987,000 669,941,000 679,312,000 690,021,000 700,817,000 705,556,000 696,775,000 694,243,000 673,915,000 653,180,000 628,975,000 602,682,000 586,832,000 557,562,000 546,521,000 543,704,000 531,311,000 524,359,000 470,139,000 473,639,000 477,090,000 480,805,000    
        stockholders’ equity -
                                                                                                
        preferred stock, par value 0.01; authorized 5,000,000 shares;
                                                                                                
        none issued
                                                                                                
        prepaid income taxes
                                                                  2,374,000                              
        current portion of bank credit facility
                                                                  10,000,000 10,000,000                             
        federal income taxes payable
                                                                   6,982,000  3,817,000 3,846,000 7,033,000  2,470,000 347,000 2,890,000  6,047,000 29,937,000 40,776,000  8,864,000 12,437,000 26,877,000    15,355,000  7,795,000 4,077,000 7,274,000     
        current assets —
                                                                                                
        property, plant and equipment —
                                                                            1,079,742,000 1,059,235,000 1,047,206,000  986,821,000 954,411,000               
        current liabilities —
                                                                                                
        stockholders’ equity —
                                                                                                
        investments in joint venture
                                                                                43,862,000    27,847,000            
        current assets –
                                                                                                
        property, plant and equipment –
                                                                                  919,170,000 893,886,000   825,708,000 804,542,000  725,694,000 723,670,000 719,789,000    795,901,000 
        current liabilities –
                                                                                                
        note payable
                                                                                      48,200,000 39,400,000 30,800,000 30,100,000 30,800,000 35,400,000 24,100,000    
        investments in joint ventures
                                                                                        28,181,000 47,323,000 49,265,000 50,677,000 51,503,000    
        unamortized restricted stock
                                                                                        -557,000 -565,000 -573,000 -582,000 -591,000    
        goodwill
                                                                                         40,290,000 40,290,000 40,290,000 40,290,000 40,290,000 40,290,000 40,290,000 
        investment in joint ventures
                                                                                             50,150,000 51,737,000  
        current assets - - sum
                                                                                             704,799,000   
        accounts payable and accrued liabilities
                                                                                             64,966,000 66,440,000 69,175,000 
        unamortized value of restricted stock
                                                                                             -650,000 -709,000  
        current assets-
                                                                                                
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-09-30 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 2013-06-30 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 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 
                                                                                              
          cash flows from operating activities
                                                                                              
          net earnings
        137,383,000 123,362,000 66,480,000 119,574,000 143,520,000 133,842,000 77,099,000 129,138,000 150,553,000 120,849,000 100,356,000 117,184,000 138,995,000 105,005,000 74,316,000 102,479,000 102,125,000 95,327,000 66,011,000 81,193,000 96,034,000 96,206,000 72,429,000 -114,632,000 71,793,000 41,304,000 -127,797,000 57,715,000 72,603,000 66,339,000 37,008,000 101,380,000 63,362,000 54,882,000 36,251,000 56,387,000 60,237,000 45,344,000 39,163,000 45,848,000 29,819,000 37,762,000 46,794,000 52,030,000 50,319,000 37,710,000 22,618,000 30,101,000 7,833,000 17,980,000 17,953,000 13,978,000 9,003,000 647,000 6,025,000 3,057,000 -10,804,000 5,496,000 9,630,000 10,527,000 152,000 4,684,000 12,194,000 11,920,000 7,030,000 11,259,000 15,645,000 7,830,000 1,912,000 38,702,000 36,560,000 40,917,000 66,095,000 59,092,000 43,767,000 38,987,000 43,322,000 34,908,000 27,488,000 25,867,000 30,119,000 23,213,000 16,111,000   14,223,000 
          adjustments to reconcile net earnings to net cash from operating activities, net of effect of non-cash activity:
                                                                                              
          depreciation, depletion, and amortization
        41,989,000 40,644,000 42,241,000 39,234,000 39,077,000 38,350,000 38,485,000 37,468,000 37,197,000 36,682,000 34,865,000 34,815,000 34,645,000 34,229,000 32,333,000         28,611,000                                                               
          deferred income tax provision
        10,393,000 2,736,000 -6,312,000 521,000 3,148,000 -2,212,000 -1,371,000 2,498,000 4,514,000 2,312,000 -2,752,000 1,029,000 3,651,000 2,547,000 -6,302,000 4,390,000 6,496,000 1,799,000 10,927,000 6,613,000 45,515,000 -3,736,000 116,383,000 -47,916,000 3,833,000 3,687,000 -42,923,000 3,701,000 4,678,000 6,173,000 669,000 -51,100,000 4,889,000 -3,812,000 -548,000 626,000 303,000 1,822,000 4,155,000 11,935,000 -14,044,000 -4,369,000 4,633,000 4,800,000 114,000 -3,742,000 1,807,000 -892,000 5,749,000 7,089,000 -2,509,000 -4,174,000 3,923,000 -723,000 -73,000 -939,000 4,598,000 -258,000 7,317,000 -3,160,000 4,799,000 -281,000 -302,000 -3,015,000 7,596,000 2,483,000 -1,208,000 -3,102,000  -1,366,000 1,617,000 137,000 -2,707,000 -1,484,000 3,416,000 768,000 64,000 -3,360,000 11,796,000 2,029,000 1,153,000 2,964,000     
          stock compensation expense
        5,468,000 4,822,000 4,522,000 4,818,000 4,864,000 4,539,000 4,544,000 4,357,000 4,542,000 6,457,000 3,519,000 4,088,000 4,402,000 5,146,000 3,627,000 4,261,000 3,920,000 2,456,000 3,236,000 3,782,000 3,515,000 4,760,000 3,416,000 4,270,000 3,918,000 8,219,000 3,500,000 4,050,000 4,066,000 3,493,000 3,189,000 3,655,000 3,836,000 3,399,000 3,002,000 2,909,000 3,564,000 2,594,000 5,053,000 3,963,000 4,312,000 4,018,000 3,223,000 3,105,000 3,766,000 2,936,000 2,649,000 1,805,000 2,307,000 2,556,000 2,576,000 1,563,000 1,467,000 1,749,000 1,458,000 835,000 742,000 784,000 1,412,000 649,000 347,000 393,000 1,035,000 1,050,000 4,353,000 2,198,000 1,773,000 868,000 1,135,000 974,000 1,314,000 1,513,000 1,632,000 1,062,000 682,000            
          equity in earnings of unconsolidated joint venture
        -6,309,000 -3,804,000 -4,417,000 -4,987,000 -9,276,000 -7,716,000 -8,791,000 -9,285,000 -10,346,000 -3,159,000 -11,843,000 -11,377,000 -7,156,000 -5,098,000 -7,703,000 -8,555,000 -8,260,000 -7,970,000 -8,985,000 -10,083,000 -10,577,000 -7,796,000 -10,096,000 -10,700,000 -12,357,000 -9,432,000 -9,634,000 -9,507,000 -10,173,000 -9,251,000 -10,216,000 -11,372,000 -11,955,000 -9,876,000 -11,015,000 -11,244,000 -12,147,000 -7,980,000 -9,090,000 -10,483,000 -11,680,000 -7,830,000 -10,693,000 -12,423,000 -12,051,000 -9,800,000 -10,330,000 -7,878,000 -8,437,000 -8,852,000 -8,750,000 -6,468,000 -7,368,000 -7,776,000 -7,936,000 -5,448,000 -6,365,000 -7,196,000 -4,160,000 -6,512,000 -5,881,000 -5,910,000 -5,065,000 -7,301,000 -7,005,000 -8,681,000 -8,854,000 -7,886,000 -8,678,000 -6,176,000   -11,001,000 -5,997,000             
          changes in operating assets and liabilities:
                                                                                              
          accounts receivable
        12,626,000 -51,066,000                                                                                     
          inventories
        23,193,000 21,774,000 -19,555,000 -16,919,000 -2,662,000 2,304,000 -40,095,000 -32,454,000 1,151,000 4,166,000 -44,727,000 -21,320,000 9,016,000 9,085,000 -24,683,000 -8,233,000 13,307,000 18,697,000 -7,082,000 -1,561,000 15,554,000 23,091,000 -9,866,000 1,033,000 23,980,000 11,582,000 -25,915,000 -12,391,000 2,131,000 17,159,000 -18,531,000 -439,000 5,896,000 7,960,000 -18,956,000 -5,201,000 14,925,000 2,596,000 -11,148,000 -7,780,000 12,465,000 723,000 -28,462,000 -6,664,000 -8,241,000 4,626,000 -13,225,000 -7,817,000 -21,907,000 -6,881,000 5,437,000 9,165,000 -9,993,000 -5,457,000 5,968,000 1,113,000 -4,225,000 -8,060,000 3,553,000 -634,000 -6,356,000 -4,335,000 9,203,000 2,680,000 -4,817,000 927,000 799,000 -5,255,000 -12,719,000 -2,810,000 -12,245,000 978,000 -240,000 398,000             
          accounts payable and accrued liabilities
        1,187,000 -5,534,000 16,049,000 -18,938,000 -11,740,000 15,503,000 10,516,000 -718,000 9,096,000 -5,100,000 6,162,000 -15,593,000 8,023,000 -6,389,000 13,563,000 -3,147,000 19,714,000 -2,938,000 3,969,000 -426,000 1,600,000 4,398,000 27,271,000 -10,429,000 6,494,000 -6,071,000 3,015,000 -10,565,000 -33,296,000 8,897,000 6,801,000 32,277,000 1,157,000 -16,062,000 27,054,000 3,296,000 16,250,000 -12,913,000 3,167,000 -8,692,000 25,316,000 -26,852,000 -17,851,000 -10,526,000 23,141,000 -6,263,000 14,605,000 -8,157,000 12,084,000 6,760,000 12,677,000 -6,911,000 276,000 374,000 10,992,000 -8,315,000 -23,074,000 -7,315,000 8,059,000 -7,088,000 -10,230,000 -12,281,000 7,643,000 -1,158,000 -8,156,000 -14,014,000 -4,307,000 -7,467,000 13,048,000 -11,508,000 5,428,000 -6,676,000 4,567,000 106,000             
          other assets
        1,827,000 -27,361,000 1,294,000 -1,762,000 445,000 -16,724,000 -1,040,000 -4,941,000 -4,910,000 -9,577,000 544,000 -178,000 5,698,000 -1,109,000 -659,000 2,211,000 5,821,000 -8,704,000 -4,442,000 1,166,000 -1,149,000 -2,030,000 3,838,000 -5,241,000 2,758,000 6,486,000 -1,760,000 2,027,000 -414,000 -3,137,000 16,085,000 -14,091,000 5,922,000 -3,720,000 375,000 1,418,000 1,473,000 -2,478,000 5,952,000 -2,018,000 459,000 75,000 -3,396,000 1,118,000 1,561,000 1,237,000 -5,161,000 1,456,000 6,484,000 -7,068,000 -3,109,000 1,014,000 -1,532,000 -3,293,000 536,000 1,866,000 -2,891,000 356,000 -2,371,000 507,000 538,000 -329,000 211,000 262,000 -531,000 -364,000 -129,000 -941,000 -2,607,000 2,463,000 -3,740,000 -652,000 -608,000 1,963,000             
          income taxes payable
           -65,629,000 33,807,000 40,193,000  5,297,000 -23,260,000 31,570,000  -479,000 -25,412,000 28,364,000  9,064,000 -28,970,000 13,854,000  26,771,000 62,908,000 36,834,000 -148,433,000 17,089,000 -983,000 9,394,000 -5,166,000 5,610,000 1,391,000 -1,565,000 -5,750,000 -1,211,000 -25,251,000 25,729,000 -2,679,000 9,313,000 -8,770,000 18,841,000 1,294,000 -10,417,000 -5,146,000 9,796,000 3,694,000 -6,804,000 -8,643,000 19,746,000 -2,685,000 14,111,000 -5,130,000 -2,210,000 3,206,000 9,316,000  869,000 691,000 1,832,000  295,000 -30,542,000 5,841,000 -4,990,000 1,540,000 -3,119,000 6,216,000 -1,472,000 2,726,000 -2,809,000 4,945,000 -6,196,000 12,022,000 -5,516,000 -3,306,000 -14,022,000 29,801,000             
          net cash from operating activities
        204,597,000 136,634,000 62,768,000 119,882,000 233,262,000 132,636,000 63,389,000 187,710,000 172,352,000 140,487,000 61,615,000 179,666,000 175,643,000 124,802,000 88,293,000 167,416,000 150,341,000 111,121,000 101,056,000 183,640,000 263,064,000 95,313,000 78,682,000 135,923,000 133,998,000 50,698,000 56,184,000 119,224,000 92,967,000 81,909,000 62,525,000 122,392,000 99,078,000 53,670,000 42,730,000 128,716,000 106,069,000 54,083,000 49,477,000 108,701,000 86,974,000 20,615,000 50,978,000 65,492,000 77,353,000 40,298,000 26,621,000 18,861,000 17,454,000 40,193,000 47,668,000 19,092,000 17,110,000 16,198,000 26,403,000 1,141,000 5,971,000 11,149,000 11,345,000 15,618,000 -17,133,000 22,654,000 39,281,000 19,764,000 17,322,000 41,203,000 19,627,000 1,233,000 3,247,000 42,725,000 34,857,000 54,534,000 64,913,000 88,119,000 24,308,000 73,234,000 35,850,000 54,854,000 28,598,000 42,487,000 50,760,000 35,357,000     
          capital expenditures
        -108,538,000 -76,097,000 -48,306,000 -47,370,000 -66,477,000 -33,128,000 -32,457,000 -22,395,000 -29,454,000 -35,999,000 -49,192,000 -17,702,000 -28,335,000 -14,914,000 -18,933,000 -28,411,000 -14,842,000 -11,935,000 -8,392,000 -4,865,000 -14,685,000 -25,991,000 -48,063,000 -24,049,000 -38,194,000 -21,813,000 -42,427,000 -33,002,000 -40,371,000 -53,073,000 -23,181,000 -21,237,000 -4,685,000 -3,812,000 -3,240,000     
          free cash flows
        96,059,000 60,537,000 14,462,000 72,512,000 166,785,000 99,508,000 30,932,000 165,315,000 142,898,000 104,488,000 12,423,000 161,964,000 147,308,000 109,888,000 69,360,000 139,005,000 135,499,000 99,186,000 92,664,000 178,775,000 248,379,000 69,322,000 30,619,000 111,874,000 95,804,000 28,885,000 13,757,000 86,222,000 52,596,000 28,836,000 62,525,000 122,392,000 99,078,000 53,670,000 42,730,000 128,716,000 106,069,000 54,083,000 49,477,000 108,701,000 86,974,000 20,615,000 50,978,000 65,492,000 77,353,000 17,117,000 26,621,000 -2,376,000 17,454,000 40,193,000 47,668,000 14,407,000 17,110,000 16,198,000 26,403,000 -2,671,000 5,971,000 11,149,000 11,345,000 12,378,000 -17,133,000 22,654,000 39,281,000 19,764,000 17,322,000 41,203,000 19,627,000 1,233,000 3,247,000 42,725,000 34,857,000 54,534,000 64,913,000 88,119,000 24,308,000 73,234,000 35,850,000 54,854,000 28,598,000 42,487,000 50,760,000 35,357,000     
          cash flows from investing activities
                                                                                              
          additions to property, plant, and equipment
        -108,538,000 -76,097,000 -48,306,000 -47,370,000 -66,477,000 -33,128,000 -32,457,000 -22,395,000 -29,454,000 -35,999,000 -49,192,000 -17,702,000 -28,335,000 -14,914,000 -18,933,000 -28,411,000 -14,842,000 -11,935,000 -8,392,000 -4,865,000 -14,685,000 -25,991,000 -48,063,000 -24,049,000 -38,194,000 -21,813,000 -42,427,000 -33,002,000 -40,371,000 -53,073,000                                                         
          acquisition spending
          -149,969,000   -55,053,000 -37,289,000 -121,162,000         -668,937,000 448,000                                                           
          net cash from investing activities
        -108,538,000 -76,097,000 -198,275,000 -47,370,000 -91,358,000 -33,128,000 -32,457,000 -22,395,000 -29,454,000 -91,052,000 -49,192,000 -17,702,000 -65,624,000 -136,076,000 -18,933,000 -28,411,000 -14,842,000 -11,935,000 -8,392,000 -4,865,000 -17,145,000 67,491,000 -716,600,000 -23,601,000 -69,066,000 -21,813,000 -42,427,000 -33,002,000 -40,371,000 -50,792,000 -48,259,000 -38,847,000 -65,452,000 -16,160,000 -423,383,000 -15,812,000 -9,253,000 -8,978,000 -14,027,000 -19,667,000 -61,174,000 -27,122,000 -46,614,000 -262,091,000 -16,858,000 -23,181,000 -16,282,000 -21,237,000 -29,179,000 -468,624,000 -3,943,000 -4,685,000 -3,155,000 -30,460,000 11,328,000 -3,812,000 -5,481,000 -6,276,000 -2,227,000 -2,640,000 -1,578,000 -2,337,000 -7,316,000 -2,548,000 -3,232,000 -1,811,000 599,000 -7,638,000 -20,920,000 -31,125,000 -49,777,000 -35,861,000 -27,499,000 -38,982,000 -20,973,000 -12,340,000 -23,445,000 -16,171,000 -77,918,000 -5,471,000 -4,544,000 -5,058,000     
          cash flows from financing activities
                                                                                              
          borrowings under revolving credit facility
        30,000,000 100,000,000 235,000,000 20,000,000   -209,000,000                                                                               
          repayment of borrowings under revolving credit facility
        -50,000,000 -25,000,000 -120,000,000 -90,000,000       27,000,000                                                                            
          repayment of term loan
        -3,750,000 -3,750,000 -3,750,000 -2,500,000 -2,500,000 -2,500,000 -2,500,000 -2,500,000 -2,500,000 -2,500,000                                                                            
          dividends paid to stockholders
        -8,377,000 -8,254,000 -8,349,000 -8,372,000 -8,463,000 -8,538,000 -8,606,000 -8,784,000 -8,913,000 -8,995,000 -9,075,000 -9,272,000 -9,507,000 -9,642,000 -10,232,000 -9,991,000   -4,163,000 -4,011,000 -4,316,000 -4,316,000 -4,499,000 -4,634,000 -4,711,000 -4,792,000 -4,790,000 -4,867,000 -4,862,000 -4,856,000 -4,853,000 -4,841,000 -4,823,000 -4,849,000 -4,828,000 -4,942,000 -5,017,000 -5,036,000 -5,025,000 -5,028,000 -5,025,000 -5,014,000 -5,005,000 -4,996,000 -4,954,000 -4,931,000 -4,544,000 -4,536,000 -4,521,000 -4,452,000 -4,449,000 -4,449,000 -4,526,000 -4,420,000 -4,417,000 -4,416,000 -4,381,000 -4,381,000 -4,375,000 -4,361,000 -4,354,000 -4,354,000 -8,709,000 -8,697,000 -8,681,000 -8,807,000 -8,381,000 -8,455,000 -8,585,000 -8,821,000 -8,804,000 -5,121,000 -5,323,000 -5,388,000 -5,480,000 -5,501,000 -5,497,000 -5,562,000 -5,643,000 -113,795,000   -921,000 
          purchase and retirement of common stock
        -89,084,000 -78,616,000 -97,010,000 -55,100,000 -60,686,000 -85,490,000 -94,422,000 -97,531,000 -77,263,000 -74,058,000 -73,819,000 -103,500,000 -100,786,000 -109,612,000 -153,767,000 -188,130,000 -185,916,000 -61,929,000     -115,532,000 -198,355,000 -80,188,000 -69,396,000 -70,060,000 -52,344,000 -36,175,000 -23,023,000 -1,880,000 -20,878,000 -39,135,000 -47,299,000 -65,487,000                                -25,369,000               
          proceeds from stock option exercises
          120,000 4,055,000 2,149,000 56,000 5,538,000 91,000 1,084,000 10,385,000 4,578,000 105,000 68,000 667,000 612,000 6,294,000 6,238,000 8,222,000 31,806,000 8,151,000   302,000 1,229,000 1,371,000 396,000 111,000 1,992,000 535,000 3,303,000 19,153,000 1,273,000 1,971,000 7,145,000 2,360,000 10,632,000 286,000 1,630,000 950,000 41,000 178,000 3,069,000 1,023,000 3,691,000 1,699,000 4,923,000 11,357,000 2,188,000 1,177,000 6,406,000 604,000 128,000 3,619,000 319,000 186,000 725,000 71,000 520,000 700,000 250,000 186,000 37,000 719,000 379,000 1,457,000 1,913,000 1,475,000 494,000 226,000 850,000 414,000 -148,000 675,000 1,072,000 1,451,000 337,000 1,015,000 708,000 798,000   1,387,000 
          shares redeemed to settle employee taxes on stock compensation
        -33,000 -5,579,000 -4,442,000 -35,000 -1,421,000 -7,929,000 -1,134,000 -1,360,000 -4,302,000 -309,000 -1,497,000 -3,949,000 -145,000 -1,214,000 -3,056,000 -1,130,000 -1,100,000 -164,000 -1,933,000 -866,000 -2,505,000 -57,000 -829,000 -956,000 -2,367,000 -152,000 -1,077,000 -1,378,000 -1,384,000 -119,000 -681,000 -2,284,000 -2,458,000 -87,000 -205,000 -1,523,000 -2,810,000 -57,000   -2,424,000  -2,648,000   -519,000                                 
          net cash from financing activities
        -120,765,000 -21,199,000 124,735,000 -135,248,000 -94,535,000 -87,893,000 -44,919,000 -163,724,000 -148,726,000 -11,528,000 -58,118,000 -185,167,000 -94,160,000 60,139,000 -67,336,000 -166,827,000 -401,827,000 -56,164,000 28,072,000 -236,849,000 -239,502,000 -82,011,000 630,311,000 -39,751,000 -30,410,000 -18,324,000 -22,216,000 -79,164,000 -95,681,000 -26,098,000 12,126,000 -92,925,000 -14,803,000 -31,838,000 222,549,000 -2,745,000 -51,490,000 -41,316,000 -45,815,000 -79,626,000 -27,003,000 6,544,000 -10,547,000 199,233,000 -55,973,000 -17,058,000 -11,281,000 5,223,000 6,376,000 429,529,000 -39,283,000 -17,181,000 -11,153,000 -7,783,000 -15,485,000 4,275,000 -2,669,000 -8,821,000 -4,114,000 -11,397,000 -2,315,000 -2,286,000 -28,593,000 -33,975,000 -44,116,000 -8,586,000 -17,727,000 1,964,000 -29,187,000 -5,352,000 -29,662,000 -33,193,000 -58,330,000 -6,670,000 -8,743,000 -11,765,000 -15,938,000 -31,326,000 38,002,000 -24,860,000 -44,856,000 -28,812,000     
          net increase in cash and cash equivalents
        -24,706,000 39,338,000 -10,772,000 -62,736,000 47,369,000 11,615,000 -13,987,000 1,591,000 -5,828,000 37,907,000    48,865,000        80,793,000 -7,607,000 72,571,000 34,522,000 10,561,000      -9,380,000 18,823,000 5,672,000 -158,104,000 110,159,000 45,326,000 3,789,000 -10,365,000 9,408,000 -1,203,000 37,000 -6,183,000 2,634,000 4,522,000 59,000 -942,000 2,847,000 -5,349,000 1,098,000 4,442,000 -2,774,000 2,802,000 -7,013,000 7,214,000 1,604,000 -2,179,000 -3,948,000 5,004,000 1,581,000 -21,026,000   -16,759,000 -30,026,000 30,806,000 2,499,000 -4,441,000 -46,860,000 6,248,000 -44,582,000 -14,520,000 -20,916,000 42,467,000 -5,408,000 49,129,000 -3,533,000 7,357,000  12,156,000 1,360,000 1,487,000   3,068,000 600,000 
          cash and cash equivalents at beginning of period
        20,401,000 34,925,000 15,242,000 19,416,000                  6,561,000 5,391,000 7,514,000 6,482,000 3,897,000 6,481,000 1,874,000 1,416,000 17,798,000 18,960,000 17,215,000 54,766,000 7,221,000 3,536,000 -4,147,000 10,942,000 
          cash and cash equivalents at end of period
        -24,706,000 59,739,000 -10,772,000 -62,736,000 47,369,000 46,540,000 -13,987,000 1,591,000 -5,828,000 53,149,000 -45,695,000 -23,203,000 15,859,000 68,281,000        199,441,000 -7,607,000 72,571,000 34,522,000 19,162,000      -9,380,000 18,823,000 12,233,000 -158,104,000 110,159,000 45,326,000 9,180,000 -10,365,000 9,408,000 -1,203,000 7,551,000 -6,183,000 2,634,000 4,522,000 6,541,000 -942,000 6,744,000 -5,350,000 1,098,000 4,442,000 3,707,000 2,802,000 -7,013,000 7,214,000 3,478,000 -2,179,000 -3,948,000 5,004,000 2,997,000 -21,026,000 18,031,000 3,372,000 1,039,000 -30,026,000 30,806,000 2,499,000 14,519,000 -46,860,000 23,463,000 -44,582,000 -14,520,000 -20,916,000 97,233,000 -5,408,000 49,129,000 -3,533,000 14,578,000 -11,318,000 12,156,000 1,360,000 5,023,000 -25,840,000 18,913,000 -1,079,000 11,542,000 
          adjustments to reconcile net earnings to net cash provided by operating activities, net of effect of non-cash activity:
                                                                                              
          income taxes receivable
         31,061,000                                                                                     
          adjustments to reconcile net earnings to net cash provided by operating activities, net of effect of noncash activity:
                                                                                              
          distributions from joint venture
              4,500,000 2,500,000 8,000,000 11,500,000 3,000,000 4,500,000 6,500,000 6,750,000 7,000,000 7,000,000 8,500,000 9,500,000 8,500,000 9,500,000 8,000,000 10,500,000 12,000,000 3,000,000 6,750,000 8,000,000 10,000,000 9,500,000 5,000,000 9,000,000 12,750,000 4,750,000 10,000,000 11,500,000 13,000,000 8,750,000 10,000,000 10,000,000 11,005,000 6,245,000 10,250,000 10,750,000 11,000,000 8,375,000 8,500,000 9,750,000 7,250,000 7,000,000 8,250,000 6,000,000 6,000,000 5,750,000 6,500,000 5,000,000 4,250,000 6,000,000 7,000,000 7,250,000 5,750,000 7,000,000 8,250,000 8,750,000 5,500,000 9,750,000 8,750,000 9,000,000 7,750,000 8,000,000   3,499,000 6,250,000             
          accounts and notes receivable
          -28,510,000 63,970,000 32,079,000 -75,443,000 -10,003,000 51,850,000 3,815,000 -46,213,000 -21,335,000 59,997,000 781,000 -51,478,000 -5,614,000 26,002,000 -9,253,000 -40,344,000 -4,732,000 34,605,000 18,132,000 -45,878,000 -12,834,000 39,071,000 -5,811,000 -45,431,000 5,275,000 40,799,000 9,655,000 -45,549,000 2,158,000 25,643,000 8,166,000 -38,527,000 -20,848,000 40,119,000 -11,449,000 -22,057,000 -16,318,000 51,144,000 -17,304,000 -22,075,000 23,289,000 10,716,000 1,516,000 -31,325,000 -6,415,000 -30,075,000 -2,817,000 12,795,000 -718,000 -17,031,000 -1,694,000 11,513,000 -10,121,000 -10,150,000 6,223,000 9,197,000 -826,000 -3,468,000 -12,284,000 20,941,000 -3,335,000 -12,330,000 6,880,000 22,266,000 -258,000 -9,215,000 -9,472,000 -7,142,000 -7,828,000 19,635,000 8,222,000 -11,724,000             
          borrowings under term loan
                                                                                              
          payment of excise tax on purchases and retirement of common stock
                                                                                              
          payment of debt issuance costs
                  -126,000 -777,000 -6,742,000 -1,243,000 -678,000 -1,718,000                                                               
          adjustments to reconcile net earnings to net cash provided by operating activities, net of effect of non-cash activity
                                                                                              
          changes in operating assets and liabilities
                                                                                              
          payment of excise tax on purchases and retirements of common stock
                                                                                              
          adjustments to reconcile net earnings to net cash provided by operating activities, net of effect of noncash activity
                                                                                              
          increase in credit facility
             10,000,000   -60,000,000 65,000,000   219,000,000 -19,000,000  25,000,000    -245,000,000 -240,000,000 -75,000,000  90,000,000 185,000,000 65,000,000 -5,000,000 -20,000,000 30,000,000    -25,000,000 225,000,000   -9,000,000 7,000,000   11,000,000 -5,000,000   -13,000,000 -11,000,000 8,000,000 6,000,000   -13,000,000                                   
          write-off of debt issuance costs
                                                                                            
          proceeds from sale of businesses
                          -2,460,000 93,482,000                                                                 
          proceeds from 2.500% senior unsecured notes
                                                                                            
          repayment of 4.500% senior unsecured notes
                                                                                            
          premium paid on early retirement of senior notes
                                                                                            
          proceeds from term loan
                                                                                              
          gain on sale of businesses
                                                                                              
          repayment of term loan and term loan credit agreement
                   -2,500,000                                                                           
          loss on early retirement of senior notes
                                                                                              
          net increase in cash, cash equivalents, and restricted cash
                   -23,203,000   2,024,000 -27,822,000 -266,328,000 43,022,000 120,736,000 -58,074,000                                                                   
          term loan
                     200,000,000                                                                         
          impairment losses
                                                                                             
          proceeds from sales of property, plant, and equipment
                                                                                              
          increase in revolving credit facility
                                                                                              
          issuance (repayment) of term loan
                                                                                              
          repayment of private placement senior unsecured notes
                                                                                             
          cash, cash equivalents, and restricted cash at beginning of period
                      268,520,000                                                                   
          cash, cash equivalents, and restricted cash at end of period
                      2,024,000 -27,822,000 -266,328,000 311,542,000 120,736,000 -58,074,000                                                                   
          gain on sale of subsidiaries
                           -9,230,000 -51,973,000                                                                 
          depreciation, depletion and amortization
                        32,340,000 31,944,000  32,080,000 32,262,000 31,937,000    27,960,000 30,574,000 29,785,000 32,326,000 29,850,000 26,112,000 28,650,000 30,306,000 28,947,000 23,897,000 22,645,000 22,386,000 22,863,000 22,860,000 25,211,000 24,770,000 24,264,000 21,747,000 19,688,000 17,574,000 17,290,000 17,706,000 17,221,000 17,070,000 14,336,000 12,783,000 12,661,000 12,770,000 12,671,000 12,363,000 12,320,000 12,246,000 12,127,000 12,389,000 12,450,000 12,527,000 12,801,000 12,634,000 12,819,000 12,699,000 12,739,000 13,072,000 12,722,000  10,682,000 10,359,000 9,851,000 9,894,000 9,936,000 9,784,000 9,829,000 9,451,000 9,535,000 9,484,000   8,110,000     
          decrease in credit facility
                                       -10,000,000                                                       
          issuance of term loan
                                                                                              
          adjustments to reconcile net earnings to net cash provided by operating activities, net of effect of non-cash activity -
                                                                                              
          repayment of private placement unsecured notes
                                                                                              
          adjustments to reconcile net earnings to net cash from operating activities, net of effect of non-cash activity -
                                                                                              
          cash and cash equivalents and restricted cash at beginning of period
                             118,648,000  8,601,000 48,068,000                                                         
          proceeds from sale of property, plant, and equipment
                                   2,281,000                                                         
          inventory adjustment to net realizable value
                                                                                            
          reduction of prepaid sand liability
                                                                                              
          excess tax benefits from share-based payment arrangements
                                                                                              
          issuance of senior unsecured notes
                                                                                              
          net increase in cash and cash equivalents and restricted cash
                                  -8,459,000 7,058,000 -43,085,000 5,019,000                                                         
          cash and cash equivalents and restricted cash at end of period
                                  -8,459,000 7,058,000 -43,085,000 53,087,000                                                         
          impairment of intangible assets
                                              6,645,000                                               
          repayment of senior notes
                                                          -15,000,000                           
          issuance of long-term debt
                                                                                            
          adjustments to reconcile net earnings to net cash from operating activities -
                                                                                              
          excess tax benefits from share based payment arrangements
                                          -1,803,000 -3,052,000 -2,195,000 -3,299,000 -1,598,000 -10,000 -1,352,000 -1,142,000 -2,250,000 -298,000 -2,703,000 -492,000  -764,000   -128,000 -21,000 -1,412,000 -126,000 -30,000 -1,132,000 -277,000 -116,000 -259,000 1,005,000 -1,569,000 -68,000 -129,000 -52,000 -86,000 -251,000 -266,000 -1,613,000 -1,116,000   -418,000 -1,284,000             
          property, plant and equipment additions
                                       -38,847,000 -28,691,000 -16,160,000  -15,812,000 -9,253,000 -8,978,000  -19,667,000 -28,747,000 -27,122,000  -24,920,000      -20,204,000    -15,428,000    -6,276,000    -2,337,000 -7,316,000 -2,548,000  -1,811,000 -3,397,000 -7,638,000  -31,125,000  -35,861,000 -27,499,000 -38,982,000  -12,340,000 -23,445,000 -16,171,000 -5,918,000 -6,342,000 -5,055,000 -5,058,000 -2,903,000   -3,487,000 
          additions to property, plant and equipment
                                                     -23,181,000  -21,237,000    -4,685,000    -3,812,000    -3,240,000                           
          repayment of credit facility
                                                                                              
          payment of debt acquisition costs
                                                                                             
          crs acquisition
                                                                                              
          net proceeds from offering of common stock
                                                                                             
          acquisition
                                                        -5,000,000                                      
          shares redeemed to settle employee taxes on restricted shares
                                                     -568,000  -286,000    -858,000                                   
          excess tax benefits from share based payments
                                                                                              
          gain on sale of property, plant and equipment
                                                                -485,000     60,000                     
          other non-operating expense
                                                                                              
          proceeds from sale of property, plant and equipment
                                                                600,000                         
          income taxes payable/receivable
                                                                                              
          increase in bank credit facility
                                                            -14,000,000 84,000,000 -11,000,000 9,000,000 -3,000,000 -5,000,000 7,000,000                           
          shares redeemed to settle employee taxes on rsus
                                                               -357,000                               
          gain on purchase of debt
                                                                                              
          income taxes payable/recivable
                                                                                              
          adjustments to reconcile net earnings to net cash from operating activities, net of effect of non-cash activity - -
                                                                                              
          proceeds from (repayment of) senior notes
                                                                                              
          retirement of common stock
                                                                                  -5,698,000 -113,094,000 -10,025,000 -36,518,000 -12,568,000 -15,709,000 -15,477,000     
          decrease in long-term debt
                                                                                             
          net decrease in cash and cash equivalents
                                                                                              
          increase in notes payable
                                                                       -30,000,000    10,000,000                   
          additional investment in joint venture
                                                                                              
          purchase of illinois cement 50% j.v. interest
                                                                                              
          increase in note payable
                                                                                              
          proceeds from long-term debt
                                                                                              
          repayment of long-term debt
                                                                                          -32,870,000    
          increase in long-term debt
                                                                                              
          adjustments to reconcile net earnings to net cash from operating activities, net of effect of non-cash activity —
                                                                                              
          repayment of note payable
                                                                                              
          adjustments to reconcile net earnings to net cash provided
                                                                                              
          by operating activities, net of effects of non-cash activity — depreciation, depletion and amortization
                                                                                              
          deferred income tax benefit
                                                                                              
          adjustments to reconcile net earnings to net cash from operating activities, net of effects of non-cash activity — depreciation, depletion and amortization
                                                                                              
          adjustments to reconcile net earnings to net cash from operating activities, net of effects of non-cash activity -
                                                                                              
          equity in earnings of unconsolidated joint ventures
                                                                              -8,171,000    -8,455,000 -6,051,000 -6,883,000 -5,527,000 -5,500,000 -7,708,000 -8,789,000 -4,924,000     
          distributions from joint ventures
                                                                              19,251,000    6,250,000 6,749,000 7,251,000 7,000,000 5,316,000 9,650,000 10,201,000 5,750,000     
          proceeds from asset dispositions
                                                                                      871,000     740,000 
          proceeds from note payable
                                                                                              
          excess tax benefit from share based payment arrangements
                                                                                              
          issuance of senior notes
                                                                                              
          reduction of long-term debt
                                                                                              
          reduction of note payable
                                                                                              
          adjustments to reconcile net earnings to net cash from operating activities, net of effect of non-cash activity –
                                                                                              
          changes in operating assets and liabilities -
                                                                                              
          reduction in long-term debt
                                                                                   -45,000,000    -19,000,000       
          addition to note payable
                                                                                    8,800,000 8,600,000         
          addition to long-term debt
                                                                                              
          redemption of subordinated debt
                                                                                              
          increase in accounts and notes receivable
                                                                                   11,822,000 -6,188,000 -14,913,000 -7,746,000 3,156,000 2,304,000 -10,197,000    -9,455,000 
          decrease in inventories
                                                                                   -6,184,000 -4,946,000 7,501,000  -2,221,000 218,000 4,284,000     
          increase in accounts payable and accrued liabilities
                                                                                   12,968,000 8,796,000 1,974,000 5,154,000 -513,000       
          increase in other
                                                                                     1,860,000  -50,000 95,000 -326,000     
          increase in income taxes payable
                                                                                     15,876,000 -9,314,000 3,720,000 -3,199,000 7,000,000 -3,366,000   2,636,000 
          (reduction in) addition to note payable
                                                                                              
          decrease (increase) in other
                                                                                              
          changes in income taxes receivable/payable
                                                                                              
          addition to (reduction in) long-term debt
                                                                                     1,000,000         
          asset impairment charge
                                                                                              
          loss on asset sale
                                                                                              
          increase in inventories
                                                                                              
          decrease (increase) in other assets
                                                                                              
          retirement of note payable
                                                                                              
          net increase in cash and cash equivlents
                                                                                              
          addition to (reduction in) note payable
                                                                                       -700,000       
          adjustments to reconcile net earnings to net cash from operating activities, net of effect of non-cash activity – depreciation, depletion and amortization
                                                                                              
          decrease in accounts payable and accrued liabilities
                                                                                         -517,000     
          (reduction) addition to long-term debt
                                                                                         -19,700,000     
          addition to (reduction) note payable
                                                                                         11,300,000     
          decrease (increase) in inventories
                                                                                              
          increase in other assets
                                                                                              
          (reduction) addition to note payable
                                                                                             -25,257,000 
          net increases in cash and cash equivalents
                                                                                              
          addition (reduction) in long-term debt
                                                                                             6,500,000