7Baggers

VSE Corporation
(NASDAQ:VSEC) 

VSEC stock logo

VSE Corporation operates as a diversified products and services aftermarket company in the United States. The company operates in three segments: Aviation, Fleet, and Federal and Defense. The Aviation segment provides international parts supply and distribution, supply chain solutions, and component...

Founded: 1959
Full Time Employees: 2,776
Sector: Industrials
Industry: Aerospace & Defense

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Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 
                                                                      
      revenues:
                                                                      
      products
    202,350,000 193,736,000 176,035,000 173,603,000 160,551,000 212,584,000 188,334,000 188,579,000 187,179,000 187,900,000 184,691,000 165,997,000 159,066,000 143,459,000 138,216,000 143,576,000 137,231,000 124,887,000 113,005,000 84,463,000 78,580,000 75,293,000 80,942,000 85,747,000 76,342,000 97,025,000 96,832,000 93,875,000 88,901,000 95,827,000 85,886,000 90,119,000 88,673,000 89,544,000 82,314,000 89,254,000 89,017,000 87,451,000 87,060,000 81,994,000 85,271,000 84,538,000 83,644,000 80,238,000 69,721,000 45,436,000 44,567,000 42,338,000 40,645,000 42,597,000 38,362,000 38,432,000 37,941,000 38,626,000 34,588,000 36,496,000 38,363,000 35,225,000 38,530,000 13,932,000       
      services
    122,230,000 107,446,000 106,874,000 98,536,000 95,494,000 86,437,000 85,279,000 77,380,000 54,360,000 47,425,000 46,662,000 39,226,000 96,367,000 90,864,000 104,271,000 98,137,000 94,008,000 85,291,000 87,577,000 90,649,000 86,401,000 74,728,000 84,563,000 82,968,000 101,076,000 98,246,000 101,494,000 95,236,000 81,018,000 85,169,000 83,045,000 80,275,000 88,224,000 105,251,000 91,850,000 104,606,000 108,277,000 127,450,000 85,720,000 78,479,000 58,365,000 60,131,000 53,752,000 50,888,000 51,070,000 49,515,000 57,182,000 65,624,000 78,764,000 79,753,000 72,707,000 80,630,000 81,216,000 76,378,000 113,658,000 102,668,000 105,978,000 113,654,000 121,393,000 144,614,000       
      total revenues
    324,580,000 301,182,000 282,909,000 272,139,000 256,045,000 299,021,000 273,613,000 265,959,000 241,539,000 235,325,000 231,353,000 205,223,000 255,433,000 234,323,000 242,487,000 241,713,000 231,239,000 210,178,000 200,582,000 175,112,000 164,981,000 150,021,000 165,505,000 168,715,000 177,418,000 195,271,000 198,326,000 189,111,000 169,919,000 180,996,000 168,931,000 170,394,000 176,897,000 194,795,000 174,164,000 193,860,000 197,294,000 214,901,000 172,780,000 160,473,000 143,636,000 144,669,000 137,396,000 131,126,000 120,791,000 94,951,000 101,749,000 107,962,000 119,409,000 122,350,000 111,069,000 119,062,000 119,157,000 115,004,000 148,246,000 139,164,000 144,341,000 148,879,000 159,923,000 158,546,000       
      yoy
    26.77% 0.72% 3.40% 2.32% 6.01% 27.07% 18.27% 29.60% -5.44% 0.43% -4.59% -15.10% 10.46% 11.49% 20.89% 38.03% 40.16% 40.10% 21.19% 3.79% -7.01% -23.17% -16.55% -10.79% 4.41% 7.89% 17.40% 10.98% -3.94% -7.08% -3.00% -12.10% -10.34% -9.36% 0.80% 20.81% 37.36% 48.55% 25.75% 22.38% 18.91% 52.36% 35.03% 21.46% 1.16% -22.39% -8.39% -9.32% 0.21% 6.39% -25.08% -14.44% -17.45% -22.75% -7.30% -12.22%           
      qoq
    7.77% 6.46% 3.96% 6.29% -14.37% 9.29% 2.88% 10.11% 2.64% 1.72% 12.73% -19.66% 9.01% -3.37% 0.32% 4.53% 10.02% 4.78% 14.54% 6.14% 9.97% -9.36% -1.90% -4.91% -9.14% -1.54% 4.87% 11.29% -6.12% 7.14% -0.86% -3.68% -9.19% 11.85% -10.16% -1.74% -8.19% 24.38% 7.67% 11.72% -0.71% 5.29% 4.78% 8.56% 27.21% -6.68% -5.75% -9.59% -2.40% 10.16% -6.71% -0.08% 3.61% -22.42% 6.53% -3.59% -3.05% -6.91% 0.87%        
      costs and operating expenses:
                                                                      
      selling, general and administrative expenses
    6,201,000 7,746,000 667,000 8,516,000 2,311,000 4,855,000 2,605,000 4,117,000 2,999,000 1,498,000 2,556,000 1,519,000 2,098,000 2,411,000 981,000 865,000 906,000 1,728,000 809,000 1,050,000 38,000 692,000 885,000 1,295,000 248,000 1,281,000 541,000 988,000 1,382,000 1,302,000 863,000 730,000 819,000 1,251,000 255,000 479,000 444,000 2,436,000 652,000 2,140,000 1,381,000 670,000 501,000 958,000 1,159,000 1,743,000 1,178,000 778,000 441,000 1,464,000 583,000 806,000 432,000 530,000 1,504,000 1,379,000 555,000 1,296,000 1,220,000 1,929,000 821,000 599,000 850,000 457,000 298,000  
      amortization of intangible assets
    9,050,000 6,687,000 6,687,000 6,487,000 6,134,000 5,199,000 4,809,000 4,360,000 3,381,000 3,635,000 3,203,000 3,601,000 4,360,000 4,233,000 4,233,000 4,437,000 4,736,000 4,670,000 4,921,000 4,603,000 4,288,000 4,159,000 4,158,000 4,464,000 4,723,000 4,332,000 5,014,000 4,980,000 4,991,000 4,004,000 4,005,000 4,004,000 4,004,000 4,004,000 4,005,000 4,004,000 4,004,000 4,004,000 4,022,000 4,021,000 4,020,000                          
      total costs and operating expenses
    291,832,000 268,691,000 272,822,000 249,626,000 231,541,000 271,606,000 249,915,000 259,827,000 217,365,000 210,006,000 206,089,000 184,586,000 237,500,000 222,529,000 225,215,000 227,562,000 219,325,000 199,439,000 186,690,000 187,826,000 155,378,000 138,107,000 151,320,000 156,213,000 161,256,000 180,458,000 181,111,000 172,695,000 158,106,000 167,911,000 154,934,000 156,539,000 165,304,000 181,908,000 161,927,000 178,855,000 183,098,000 201,615,000 159,157,000 148,594,000 130,895,000                          
      operating income
    32,748,000 32,491,000 10,087,000 22,513,000 24,504,000 27,415,000 23,698,000 6,132,000 24,174,000 25,319,000 25,264,000 20,637,000 17,933,000 11,794,000 17,272,000 14,151,000 11,914,000 10,739,000 13,892,000 -12,714,000 9,603,000 11,914,000 14,185,000 -21,910,000 9,734,000 14,813,000 17,215,000 16,416,000 11,813,000 13,085,000 15,697,000 13,855,000 11,593,000 12,887,000 12,237,000 15,005,000 14,196,000 13,286,000 13,623,000 11,879,000 12,741,000 15,116,000 13,243,000 11,496,000 10,684,000 7,687,000 7,183,000 10,703,000 11,357,000 12,000,000 9,460,000 12,701,000 9,942,000 14,851,000 11,850,000 12,032,000 12,343,000 11,111,000 11,387,000 7,273,000 6,909,000 7,764,000 11,845,000 9,953,000 8,651,000  
      yoy
    33.64% 18.52% -57.44% 267.14% 1.37% 8.28% -6.20% -70.29% 34.80% 114.68% 46.27% 45.83% 50.52% 9.82% 24.33% -211.30% 24.07% -9.86% -2.07% -41.97% -1.35% -19.57% -17.60% -233.47% -17.60% 13.21% 9.67% 18.48% 1.90% 1.54% 28.27% -7.66% -18.34% -3.00% -10.17% 26.32% 11.42% -12.11% 2.87% 3.33% 19.25% 96.64% 84.37% 7.41% -5.93% -35.94% -24.07% -15.73% 14.23% -19.20% -20.17% 5.56% -19.45% 33.66% 4.07% 65.43% 78.65% 43.11% -3.87% -26.93% -20.14%      
      qoq
    0.79% 222.11% -55.19% -8.13% -10.62% 15.68% 286.46% -74.63% -4.52% 0.22% 22.42% 15.08% 52.05% -31.72% 22.05% 18.78% 10.94% -22.70% -209.27% -232.40% -19.40% -16.01% -164.74% -325.09% -34.29% -13.95% 4.87% 38.97% -9.72% -16.64% 13.29% 19.51% -10.04% 5.31% -18.45% 5.70% 6.85% -2.47% 14.68% -6.77% -15.71% 14.14% 15.20% 7.60% 38.99% 7.02% -32.89% -5.76% -5.36% 26.85% -25.52% 27.75% -33.06% 25.32% -1.51% -2.52% 11.09% -2.42% 56.57% 5.27% -11.01% -34.45% 19.01% 15.05%   
      operating margin %
    10.09% 10.79% 3.57% 8.27% 9.57% 9.17% 8.66% 2.31% 10.01% 10.76% 10.92% 10.06% 7.02% 5.03% 7.12% 5.85% 5.15% 5.11% 6.93% -7.26% 5.82% 7.94% 8.57% -12.99% 5.49% 7.59% 8.68% 8.68% 6.95% 7.23% 9.29% 8.13% 6.55% 6.62% 7.03% 7.74% 7.20% 6.18% 7.88% 7.40% 8.87% 10.45% 9.64% 8.77% 8.85% 8.10% 7.06% 9.91% 9.51% 9.81% 8.52% 10.67% 8.34% 12.91% 7.99% 8.65% 8.55% 7.46% 7.12% 4.59% Infinity% Infinity% Infinity% Infinity% Infinity%  
      interest expense
    -1,402,000 1,833,000 4,339,000 6,445,000 7,939,000 6,943,000 8,983,000 9,826,000 9,187,000 9,278,000 8,459,000 7,366,000 5,977,000 5,586,000 4,818,000 3,872,000 3,609,000 3,593,000 2,780,000 2,666,000 3,030,000 3,408,000 3,530,000 3,072,000 3,486,000 3,568,000 3,706,000 3,398,000 3,158,000 2,285,000 2,340,000 2,182,000 2,175,000 2,082,000 2,347,000 2,376,000 2,435,000 2,449,000 2,509,000 2,400,000 2,497,000 2,543,000 2,441,000 2,417,000 2,143,000 825,000 871,000 1,090,000 1,197,000 1,336,000 1,395,000 1,481,000 1,577,000 1,740,000 2,100,000 1,852,000 1,532,000 1,747,000 1,377,000 440,000 144,000 105,000 61,000 19,000   
      income from continuing operations before income taxes
    34,150,000 30,658,000 5,748,000 16,068,000 16,565,000 20,472,000 14,715,000 -3,694,000 14,987,000 16,041,000 16,805,000 13,271,000                                 8,541,000    10,160,000    8,365,000              
      provision for income taxes
    5,095,000 8,362,000 2,157,000 2,430,000  4,947,000 3,065,000 -917,000 2,887,000 3,207,000 4,694,000 3,182,000 2,839,000 1,360,000 3,035,000 2,731,000 2,061,000 946,000 2,091,000  1,462,000 2,493,000 2,547,000 -2,358,000 2,916,000 1,249,000 2,982,000 3,120,000 2,052,000 1,557,000 3,323,000 2,922,000 2,366,000 -6,552,000 3,251,000 4,822,000 4,468,000 3,653,000 4,026,000 3,510,000 3,692,000 4,828,000 4,328,000 3,600,000 3,321,000 2,473,000 2,425,000 3,669,000 3,891,000 4,235,000 2,738,000 4,257,000 3,094,000 4,674,000 3,786,000 3,885,000 4,143,000 3,315,000 3,890,000 2,622,000 2,593,000 2,691,000 4,566,000 3,831,000 3,258,000  
      net income from continuing operations
    29,055,000 22,296,000 3,591,000 13,638,000 13,968,000 15,525,000 11,650,000 -2,777,000 12,100,000                                                          
      loss from discontinued operations, net of tax
         -4,677,750                                        -226,000 -4,000 -279,000 -615,000 -28,750 -1,000 -101,000 -13,000              
      net income
    29,055,000 13,567,000 3,912,000 3,197,000 -8,973,000 13,062,000 11,650,000 -2,777,000 -6,611,000 11,605,000 9,557,000 8,855,000 9,117,000 4,848,000 9,419,000 7,548,000 6,244,000 6,200,000 9,021,000 -12,366,000 5,111,000 6,013,000 8,108,000 -22,624,000 3,332,000 9,996,000 10,527,000 9,898,000 6,603,000 9,243,000 10,034,000 8,751,000 7,052,000 17,357,000 6,639,000 7,807,000 7,293,000 7,184,000 7,088,000 5,969,000 6,552,000 7,745,000 6,474,000 5,479,000 5,220,000 4,163,000 3,883,000 5,665,000 5,654,000 5,406,000 5,326,000 6,862,000 5,258,000 2,367,000 5,964,000 6,295,000 6,668,000 6,049,000 6,120,000 4,211,000 4,172,000 4,968,000 7,218,000 6,103,000 5,398,000  
      yoy
    -423.80% 3.87% -66.42% -215.12% 35.73% 12.55% 21.90% -131.36% -172.51% 139.38% 1.47% 17.32% 46.01% -21.81% 4.41% -161.04% 22.17% 3.11% 11.26% -45.34% 53.39% -39.85% -22.98% -328.57% -49.54% 8.15% 4.91% 13.11% -6.37% -46.75% 51.14% 12.09% -3.30% 141.61% -6.33% 30.79% 11.31% -7.24% 9.48% 8.94% 25.52% 86.04% 66.73% -3.28% -7.68% -22.99% -27.09% -17.44% 7.53% 128.39% -10.70% 9.01% -21.15% -60.87% -2.55% 49.49% 59.83% 21.76% -15.21% -31.00% -22.71%      
      qoq
    114.16% 246.80% 22.36% -135.63% -168.70% 12.12% -519.52% -57.99% -156.97% 21.43% 7.93% -2.87% 88.06% -48.53% 24.79% 20.88% 0.71% -31.27% -172.95% -341.95% -15.00% -25.84% -135.84% -778.99% -66.67% -5.04% 6.35% 49.90% -28.56% -7.88% 14.66% 24.09% -59.37% 161.44% -14.96% 7.05% 1.52% 1.35% 18.75% -8.90% -15.40% 19.63% 18.16% 4.96% 25.39% 7.21% -31.46% 0.19% 4.59% 1.50% -22.38% 30.51% 122.14% -60.31% -5.26% -5.59% 10.23% -1.16% 45.33% 0.93% -16.02% -31.17% 18.27% 13.06%   
      net income margin %
    8.95% 4.50% 1.38% 1.17% -3.50% 4.37% 4.26% -1.04% -2.74% 4.93% 4.13% 4.31% 3.57% 2.07% 3.88% 3.12% 2.70% 2.95% 4.50% -7.06% 3.10% 4.01% 4.90% -13.41% 1.88% 5.12% 5.31% 5.23% 3.89% 5.11% 5.94% 5.14% 3.99% 8.91% 3.81% 4.03% 3.70% 3.34% 4.10% 3.72% 4.56% 5.35% 4.71% 4.18% 4.32% 4.38% 3.82% 5.25% 4.73% 4.42% 4.80% 5.76% 4.41% 2.06% 4.02% 4.52% 4.62% 4.06% 3.83% 2.66% Infinity% Infinity% Infinity% Infinity% Infinity%  
      earnings per share:
                                                                      
      basic
                                                                      
      continuing operations
    1.06 1.02 0.17 0.66 0.68 0.82 0.63 -0.16 0.77 0.82 0.81 0.78                                                       
      discontinued operations
     -0.38 0.02 -0.51 -1.11 -0.09   -1.19 -0.08 -0.17 -0.1                                                       
      diluted
                                                                      
      weighted-average shares outstanding:
                                                                      
      basic
    27,497,210 21,138,691 20,681,203 20,670,239 20,617,949 17,878,608 18,425,643 17,152,661 15,783,915 14,130,334 15,001,908 12,886,100                                                       
      diluted
    27,834,475 21,238,718 20,756,508 20,731,397 20,740,319 17,975,295 18,479,123 17,202,115 15,939,950 14,184,729 15,050,062 12,916,998                                                       
      dividends declared per share
    0.1 0.075 0.1 0.1 0.1 0.075 0.1 0.1 0.1 0.075 0.1 0.1 0.1 0.075 0.1 0.1 0.1 0.068 0.09 0.09 0.09 0.068 0.09 0.09 0.09 0.065 0.09 0.09 0.08 0.058 0.08 0.08 0.07 0.033  0.07 0.06 0.029  0.12 0.11 0.053  0.11 0.1 0.048  0.1 0.09 0.043  0.09 0.08 0.058 0.08 0.08 0.07 0.05 0.07 0.07 0.06 0.043 0.06 0.06 0.05  
      earn-out receivable fair value adjustments
      23,300,000                                                                
      lease abandonment and termination (benefits) costs
         3,051,250 -652,000                                                            
      income from discontinued operations, net of tax
     -8,729,000 321,000 -10,441,000 -22,941,000    -18,711,000 -1,229,000 -2,554,000 -1,234,000                                                       
      lease abandonment costs
           12,857,000                                                           
      benefit from income taxes
        2,597,000               -3,014,000                                               
      income from continuing operations
             7,579,500 12,111,000 10,089,000                              7,745,000 6,474,000 5,479,000 5,220,000 4,389,000 3,887,000 5,944,000 6,269,000 6,429,000 5,327,000 6,963,000 5,271,000              
      income before income taxes
                11,956,000 6,208,000 12,454,000 10,279,000 8,305,000 7,146,000 11,112,000 -15,380,000 6,573,000 8,506,000 10,655,000 -24,982,000 6,248,000 11,245,000 13,509,000 13,018,000 8,655,000 10,800,000 13,357,000 11,673,000 9,418,000 10,805,000 9,890,000 12,629,000 11,761,000 7,709,250 11,114,000 9,479,000 10,244,000 7,105,500 10,802,000 9,079,000  6,521,250 6,312,000 9,613,000  6,912,500 8,065,000 11,220,000  7,685,250 9,750,000 10,180,000 10,811,000 9,364,000 10,010,000 6,833,000 6,765,000 7,659,000 11,784,000 9,934,000 8,656,000  
      basic earnings per share
                0.71 0.38 0.74 0.59 0.49 0.49 0.71  0.42 0.54 0.73 -2.05 0.3 0.618 0.96 0.9 0.6 0.595 0.92 0.8 0.65 0.503 0.61 0.72 0.67 0.455 0.66 1.11              0.895 1.13 1.19 1.27     0.903 1.39 1.18   
      basic weighted-average shares outstanding
                12,844,458 12,780,117 12,797,727 12,778,355 12,741,394 12,551,459 12,704,165 12,702,366 12,076,509 11,034,256 11,043,246 11,041,235 11,000,204 10,957,750 10,970,123 10,969,899 10,920,171 10,876,201 10,881,106 10,881,106 10,860,555 10,834,562 10,838,435 10,838,435 10,822,669 10,793,723 10,798,684 5,399,342 5,389,184 5,373,613 5,374,863 5,374,863 5,369,695 5,353,912 5,355,968 5,355,698 5,347,435 5,329,208 5,333,077 5,333,077 5,317,387 5,282,047 5,286,706,000 5,286,706,000 5,267,098,000 5,232,055   5,214,334 5,189,263 5,192,202 5,191,909 5,180,410  
      diluted earnings per share
                0.71 0.38 0.73 0.59 0.49 0.49 0.71  0.42 0.54 0.73 -2.05 0.3 0.613 0.95 0.89 0.6 0.593 0.92 0.8 0.65 0.5 0.61 0.72 0.67 0.453 0.65 1.1              0.893 1.12 1.18 1.26     0.903 1.39 1.18   
      diluted weighted-average shares outstanding
                12,926,424 12,827,894 12,834,084 12,811,078 12,803,279 12,632,874 12,774,636 12,702,366 12,171,828 11,034,256 11,100,356 11,041,235 11,100,506 11,044,731 11,060,081 11,072,745 10,974,081 10,936,057 10,935,112 10,918,927 10,896,504 10,867,834 10,856,675 10,861,769 10,849,427 10,828,152 10,826,007 5,413,245 5,403,097 5,393,635 5,396,174 5,390,821 5,380,217 5,371,200 5,371,995 5,368,166 5,364,426 5,343,267 5,338,790 5,340,060 5,329,475 5,309,862 5,311,229 5,312,379 5,292,532 5,232,055   5,214,334 5,189,263 5,192,202 5,191,909 5,180,410  
      loss on sale of a business entity and certain assets
                           -678,000 -7,536,000                                          
      gain on sale of property
                            1,108,000                                          
      goodwill and intangible asset impairment
                           -33,734,000                                           
      basic loss per share
                       -0.97                                               
      diluted loss per share
                       -0.97                                               
      gain on sale of contract
                                  1,700,000                                    
      basic earnings per share:
                                            1.22                    0.8    1.04  
      diluted earnings per share:
                                            1.21                    0.8    1.04  
      contract costs:
                                                                      
      total contract costs
                                             128,883,000 123,652,000 118,672,000 108,948,000 85,521,000 93,388,000 96,481,000 107,611,000 108,886,000 101,026,000 105,555,000 108,783,000 102,537,000 130,953,000 125,753,000 131,443,000 136,472,000 147,316,000 149,344,000       
      loss income from discontinued operations
                                                 -0.043  -0.05  -0.005  -0.02               
      loss from discontinued operations
                                                 -0.04  -0.05 -0.12 -0.005  -0.02               
      contract costs
                                                                143,514,000 204,081,000 200,248,000 202,063,000 219,227,000  
      impairment of goodwill and intangible assets
                                                         984,750 3,939,000            
      basic and diluted weighted-average shares outstanding
                                                              5,237,923,000 5,237,337,000       
      basic and diluted earnings per share
                                                             0.693 1.17 0.8       
      revenues
                                                                151,244,000 212,444,000 212,943,000 212,473,000 228,176,000  
      interest income
                                                                    5,000  
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 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 
                                                                        
        assets
                                                                        
        current assets:
                                                                        
        cash and cash equivalents
      1,239,407,000 69,358,000 8,784,000 16,906,000 5,711,000 29,030,000 7,907,000 18,993,000 10,569,000 7,768,000 20,667,000 4,163,000 532,000 478,000 90,000 371,000 498,000 518,000 383,000 337,000 347,000 378,000 551,000 213,000 543,000 734,000 1,095,000 760,000 829,000 162,000 889,000 624,000 621,000 624,000 472,000 717,000 457,000 428,000 553,000 680,000 587,000 740,000 194,000 444,000 468,000 263,000 328,000 302,000 357,000 220,000 280,000 266,000 1,429,000 1,501,000 866,000 442,000 368,000 451,000 316,000 648,000 2,303,000 5,764,000 1,963,000 7,097,000 2,188,000 8,024,000 
        receivables
      216,504,000 190,732,000 176,399,000 183,208,000 169,532,000 197,563,000 162,665,000 168,238,000 145,427,000 127,958,000 129,113,000 114,154,000 113,512,000 103,193,000 91,093,000 102,194,000 83,958,000 76,587,000 76,495,000 78,322,000 63,552,000 55,471,000 59,135,000 58,615,000 70,793,000 70,630,000 69,793,000 74,012,000 64,746,000 60,004,000 55,512,000 54,629,000 56,738,000 98,337,000 72,874,000 80,945,000 90,947,000 101,218,000 86,107,000 91,018,000 76,878,000 78,471,000 75,762,000 76,685,000 79,690,000                      
        contract assets
      45,723,000 41,468,000 34,027,000 34,043,000 30,879,000 29,960,000 29,549,000 28,575,000 10,800,000 8,049,000                                                         
        inventories
      625,737,000 553,834,000 464,315,000 463,216,000 441,455,000 576,318,000 533,773,000 532,371,000 521,247,000 500,864,000 494,368,000 427,822,000 416,667,000 380,707,000 349,917,000 337,753,000 332,023,000 322,702,000 314,705,000 274,598,000 282,771,000 253,422,000 230,816,000 223,134,000 210,030,000 218,627,000 202,811,000 197,213,000 181,069,000 166,392,000 166,486,000 164,390,000 148,933,000 132,591,000 135,525,000 135,812,000 141,122,000 136,340,000 128,935,000 117,373,000 113,633,000 109,123,000 113,728,000 113,699,000 106,205,000 49,363,000 46,987,000 44,108,000 40,425,000 39,315,000 40,263,000 41,291,000 40,647,000 41,555,000 43,369,000 43,119,000 42,454,000 41,990,000 40,477,000 38,605,000       
        prepaid expenses and other current assets
      33,569,000 37,937,000 38,755,000 56,246,000 61,770,000 41,956,000                                                             
        total current assets
      2,160,940,000 893,329,000 722,280,000 753,619,000 968,858,000 874,827,000 775,297,000 796,375,000 743,096,000 774,030,000 770,363,000 674,224,000 590,764,000 548,878,000 513,338,000 506,586,000 474,656,000 463,993,000 459,861,000 416,230,000 419,533,000 354,957,000 342,329,000 354,078,000 342,626,000 355,341,000 340,502,000 333,178,000 309,550,000 281,220,000 272,591,000 271,149,000 254,842,000 248,540,000 233,247,000 228,406,000 248,273,000 258,463,000 230,481,000 222,719,000 204,282,000 201,370,000 205,216,000 207,962,000 205,958,000 122,368,000 125,053,000 118,160,000 126,454,000 129,426,000 128,168,000 136,038,000 136,779,000 145,975,000 169,543,000 170,267,000 173,290,000 178,447,000 174,755,000 206,559,000 150,531,000 173,856,000 158,916,000 154,477,000 166,096,000 193,224,000 
        property and equipment
      93,821,000 91,098,000 82,986,000 80,243,000 71,175,000 85,586,000 74,631,000 72,571,000 66,559,000 58,076,000 53,269,000 43,992,000 49,533,000 47,969,000 44,564,000 42,237,000 44,478,000 42,486,000 41,785,000 40,086,000 38,318,000 36,363,000 36,264,000 36,987,000 37,276,000 43,465,000 43,792,000 44,216,000 40,167,000 49,606,000 51,192,000 52,670,000 53,988,000 55,146,000 56,857,000 58,202,000 60,026,000 62,061,000 63,161,000 63,877,000 63,796,000 64,308,000 65,237,000 64,988,000 65,440,000 52,911,000 54,347,000 55,470,000 56,542,000 57,738,000 58,811,000 60,090,000 61,733,000 62,468,000 62,256,000 64,302,000 64,107,000 57,113,000 46,435,000 45,259,000 43,324,000 42,315,000 40,055,000 23,947,000 24,035,000 24,683,000 
        intangible assets
      318,809,000 295,962,000 201,849,000 208,536,000 191,023,000 197,281,000 160,580,000 165,389,000 110,749,000 114,130,000 118,865,000 82,818,000 90,064,000 90,624,000 94,857,000 99,090,000 103,527,000 108,263,000 117,041,000 102,005,000 105,914,000 103,595,000 107,754,000 111,912,000 119,166,000 132,175,000 142,907,000 147,921,000 152,901,000 94,892,000 98,896,000 102,901,000 106,905,000 110,909,000 114,913,000 118,917,000 122,922,000 126,926,000 130,930,000 135,002,000 139,023,000 143,043,000 153,640,000 157,668,000 161,769,000 72,209,000 74,634,000 77,175,000 79,716,000 82,257,000 84,798,000 87,338,000 89,880,000 92,421,000 96,661,000 100,933,000 103,734,000 106,536,000 109,337,000 112,139,000 24,140,000 25,003,000 25,866,000 8,417,000 8,877,000 9,336,000 
        goodwill
      638,889,000 641,242,000 428,705,000 428,665,000 423,576,000 491,453,000 390,636,000 390,135,000 351,112,000 351,781,000 345,726,000 222,023,000 253,580,000 248,837,000 248,837,000 248,837,000 248,837,000 248,753,000 240,826,000 238,126,000 238,126,000 238,126,000 238,126,000 238,126,000 269,071,000 276,450,000 259,212,000 259,212,000 259,212,000 198,622,000 198,622,000 198,622,000 198,622,000 198,622,000 198,622,000 198,622,000 198,622,000 198,622,000 198,622,000 198,545,000 198,545,000 198,545,000 184,384,000 184,384,000 193,772,000 92,052,000 92,052,000 92,052,000 92,052,000 92,052,000 92,052,000 92,052,000 92,052,000 92,052,000 96,443,000 98,879,000 98,879,000 98,879,000 93,099,000 101,023,000 37,396,000 36,282,000 35,649,000 20,930,000 20,930,000 19,530,000 
        operating lease right-of-use assets
      48,272,000 50,151,000 42,975,000 43,748,000 45,223,000 53,326,000 33,549,000 34,419,000 35,123,000 28,684,000 25,166,000                24,375,000 25,256,000 26,371,000                                      
        note receivable
      27,735,000 27,041,000 26,342,000 25,000,000                                                               
        other assets
      22,197,000 29,755,000 55,310,000 38,916,000 33,127,000 32,147,000 29,306,000 35,409,000 30,285,000 23,637,000 29,591,000 30,220,000 27,178,000 29,069,000 31,980,000 25,232,000 23,413,000 27,736,000 27,015,000 29,624,000 29,016,000 26,525,000 24,759,000 25,064,000 21,936,000 17,490,000 16,845,000 16,992,000 15,844,000 14,488,000 15,766,000 15,401,000 15,266,000 15,796,000 15,405,000 15,699,000 15,638,000 15,767,000 16,158,000 15,243,000 15,274,000 14,868,000 16,212,000 17,028,000 16,531,000 15,790,000 16,959,000 17,320,000 17,100,000 16,511,000 16,754,000 16,393,000 16,584,000 15,196,000 15,225,000 14,999,000 15,776,000 13,306,000 14,746,000 17,050,000 14,217,000 10,132,000 9,910,000 6,975,000 7,598,000 7,217,000 
        total assets
      3,310,663,000 2,028,578,000 1,560,447,000 1,602,027,000 1,732,982,000 1,734,620,000 1,463,999,000 1,494,298,000 1,336,924,000 1,350,338,000 1,342,980,000 1,073,471,000 1,044,403,000 999,789,000 957,526,000 947,223,000 920,972,000 918,558,000 912,938,000 850,220,000 853,088,000 780,081,000 770,631,000 787,562,000 811,409,000 845,864,000 827,633,000 826,775,000 804,045,000 638,828,000 637,067,000 640,743,000 629,623,000 629,013,000 619,044,000 619,846,000 645,481,000 661,839,000 639,352,000 635,386,000 620,920,000 622,134,000 624,689,000 632,030,000 643,470,000 355,330,000 363,045,000 363,171,000 374,498,000 380,529,000 382,467,000 393,779,000 398,625,000 410,211,000 440,435,000 449,380,000 455,786,000 454,512,000 439,038,000 483,353,000 270,566,000 288,426,000 270,880,000 215,088,000 227,536,000 253,990,000 
        liabilities and stockholders' equity
                                                                        
        current liabilities:
                                                                        
        current portion of long-term debt
      29,924,000 7,500,000 7,500,000 7,500,000 5,625,000 30,000,000 30,000,000 30,000,000 30,000,000 22,500,000 19,000,000 10,000,000 10,000,000 10,000,000 9,162,000 14,162,000 14,162,000 14,162,000 14,162,000 13,816,000 21,316,000 20,379,000 19,441,000 18,504,000 17,820,000 16,883,000 10,716,000 10,091,000 9,466,000 9,466,000 9,466,000 9,468,000 9,450,000 6,960,000 25,710,000 23,835,000 21,960,000 21,023,000 20,085,000 19,148,000 18,210,000 17,557,000 16,620,000 15,682,000 14,750,000 24,837,000 31,087,000 27,962,000 24,837,000 24,837,000 24,837,000 24,837,000 24,837,000 23,274,000 21,712,000 20,149,000 18,587,000 18,587,000 18,750,000 18,750,000 6,667,000 6,667,000 7,222,000    
        accounts payable
      147,910,000 154,506,000 112,425,000 140,465,000 140,780,000 187,590,000 122,740,000 144,645,000 155,478,000 173,036,000 137,788,000 104,566,000 141,851,000 159,600,000 119,093,000 112,935,000 94,923,000 115,064,000 96,898,000 63,804,000 73,816,000 72,682,000 63,011,000 76,183,000 67,709,000 68,099,000 71,668,000 74,310,000 59,106,000 57,408,000 48,219,000 57,648,000 75,603,000 66,015,000 48,560,000 51,932,000 71,206,000 93,999,000 58,768,000 53,563,000 51,445,000 40,084,000 36,677,000 36,167,000 36,900,000 29,424,000 33,328,000 25,460,000 32,949,000 31,757,000 25,581,000 26,025,000 27,409,000 30,063,000 44,653,000 38,044,000 38,729,000 50,353,000 51,205,000 67,028,000 59,609,000 75,724,000 65,911,000 69,056,000 86,877,000 112,995,000 
        accrued expenses and other current liabilities
      65,550,000 73,161,000 61,357,000 52,012,000 46,793,000 62,195,000 55,524,000 49,159,000 35,988,000 36,383,000 33,387,000 30,295,000 44,302,000 53,722,000 50,791,000 48,226,000 46,684,000 49,465,000 54,492,000 53,983,000 50,882,000 45,172,000 48,746,000 47,472,000 38,345,000 46,514,000 45,314,000 39,428,000 39,919,000 37,133,000 36,282,000 32,619,000 29,162,000 40,243,000 47,852,000 31,638,000 27,835,000 32,772,000 37,521,000 31,256,000 27,159,000 29,067,000 26,101,000 24,688,000 31,123,000 23,245,000 21,713,000 22,816,000 21,895,000 24,661,000 20,822,000 22,918,000 23,053,000 26,688,000 31,745,000 29,987,000 29,402,000 38,017,000         
        dividends payable
      2,806,000 2,339,000 2,069,000 2,068,000 2,067,000 2,059,000 1,843,000 1,842,000 1,584,000 1,576,000 1,575,000 1,290,000 1,289,000 1,282,000 1,280,000 1,279,000 1,276,000 1,273,000 1,143,000 1,143,000 1,142,000 995,000 994,000 994,000 993,000 987,000 987,000 987,000 876,000 871,000 870,000 870,000 762,000 759,000  759,000 650,000 648,000  648,000 594,000 591,000  591,000 539,000 536,000  536,000 482,000 480,000  480,000 427,000 423,000 423,000 423,000 370,000 367,000 367,000 367,000 314,000 312,000 312,000 312,000 260,000 258,000 
        total current liabilities
      246,190,000 237,506,000 183,351,000 202,045,000 248,299,000 281,844,000 210,107,000 225,646,000 223,050,000 286,886,000 252,148,000 210,221,000 197,442,000 224,604,000 180,326,000 176,602,000 157,045,000 179,964,000 166,695,000 132,746,000 147,156,000 139,228,000 134,097,000 146,753,000 130,167,000 164,183,000 139,385,000 135,516,000 120,067,000 104,878,000 94,837,000 100,605,000 114,977,000 113,977,000 122,122,000 108,164,000 121,651,000 148,442,000 116,374,000 115,115,000 105,423,000 96,977,000 88,436,000 100,935,000 97,877,000 87,497,000 95,282,000 78,260,000 80,751,000 81,735,000 71,625,000 74,640,000 76,237,000 80,999,000 99,660,000 95,884,000 95,748,000 107,324,000 106,238,000 116,110,000 96,003,000 119,287,000 107,824,000 98,359,000 115,986,000 147,322,000 
        long-term debt
      331,051,000                                                          145,689,000 173,406,000 9,444,000 11,111,000 12,778,000    
        deferred compensation
      4,613,000 5,918,000 7,331,000 7,540,000 7,212,000 7,262,000 7,683,000 7,561,000 7,677,000 7,939,000 7,470,000 7,651,000 7,551,000 7,398,000 10,128,000 11,977,000 13,773,000 14,328,000 17,234,000 18,267,000 17,186,000 16,027,000 18,905,000 20,535,000 17,985,000 18,146,000 17,417,000 17,201,000 20,909,000 17,027,000 18,649,000 18,028,000 17,918,000 16,323,000 15,749,000 15,307,000 14,894,000 12,751,000 12,595,000 13,210,000 13,070,000 11,169,000 10,905,000 13,787,000 12,529,000 12,563,000 12,312,000 12,550,000 12,605,000 11,454,000 12,109,000 12,083,000 12,177,000 10,684,000 10,517,000 10,078,000 10,515,000 8,215,000 8,260,000 8,930,000 8,882,000 6,034,000 5,762,000 3,558,000 4,011,000 3,934,000 
        long-term operating lease obligations
      41,557,000 43,693,000 37,609,000 38,259,000 39,346,000 48,144,000 29,061,000 36,515,000 31,431,000 24,959,000 21,961,000 17,609,000 30,743,000 32,340,000 22,947,000 24,537,000 26,336,000 27,168,000 26,700,000 25,044,000 23,673,000 22,815,000 24,136,000 24,272,000                                           
        deferred tax liabilities
      16,782,000 12,394,000      4,317,000 7,406,000 6,985,000 9,671,000 3,743,000 9,497,000 9,621,000 10,166,000 8,376,000 10,343,000 9,108,000 10,983,000 11,245,000 16,523,000 14,897,000 12,456,000 11,436,000 15,962,000 17,865,000 17,732,000 18,720,000 18,712,000 18,482,000 18,337,000 19,172,000 20,302,000 19,423,000 27,981,000 28,941,000 29,707,000 29,872,000 27,751,000 30,005,000 31,099,000 35,137,000                         
        other long-term liabilities
      4,254,000 4,955,000 220,000 3,000,000 3,000,000 9,011,000 9,011,000 5,435,000 3,000,000  440,000       250,000 258,000 33,000 2,000,000 83,000                                             
        total liabilities
      644,447,000 589,770,000 577,107,000 622,500,000 757,238,000 746,434,000 676,203,000 712,982,000 724,186,000 733,613,000 733,460,000 604,334,000 587,088,000 550,263,000 512,098,000 515,940,000 497,180,000 501,225,000 501,917,000 448,726,000 438,785,000 423,764,000 420,174,000 444,608,000 445,008,000 482,763,000 471,773,000 480,438,000 466,514,000 310,433,000 316,560,000 329,427,000 326,310,000 335,918,000 341,852,000 349,313,000 381,972,000 406,645,000 390,412,000 393,871,000 384,626,000 392,825,000 402,533,000 415,900,000 432,350,000 149,841,000 160,773,000 164,806,000 181,358,000 193,726,000 200,226,000 216,979,000 228,354,000 245,876,000 278,361,000 292,858,000 305,111,000 310,912,000 301,456,000 350,695,000 141,725,000 164,650,000 151,895,000 103,005,000 121,285,000 152,680,000 
        commitments and contingencies
                                                                        
        stockholders' equity:
                                                                        
        common stock
      1,403,000 1,170,000 1,034,000 1,034,000 1,033,000 1,030,000 921,000 921,000 792,000 788,000 787,000 645,000 644,000 641,000 640,000 640,000 638,000 636,000 635,000 635,000 635,000 553,000 552,000 552,000 551,000 549,000 549,000 549,000 547,000 544,000 544,000 544,000 544,000 542,000 542,000 542,000 542,000 540,000 540,000 270,000 270,000 269,000 269,000 269,000 269,000 268,000 268,000 268,000 268,000 267,000 267,000 267,000 267,000 265,000 264,000 264,000 264,000 262,000 262,000 262,000 262,000 260,000 260,000 260,000 260,000 258,000 
        additional paid-in capital
      2,241,751,000 1,041,483,000 597,210,000 595,001,000 591,650,000 591,600,000 404,983,000 403,666,000 230,805,000 229,103,000 227,083,000 96,471,000 94,577,000 92,620,000 91,706,000 91,051,000 89,830,000 88,515,000 87,322,000 85,844,000 85,296,000 31,870,000 31,494,000 31,494,000 31,244,000 29,411,000 29,411,000 29,411,000 28,788,000 26,632,000 26,490,000 26,490,000 26,490,000 24,470,000 24,455,000 24,455,000 24,455,000 22,876,000 22,866,000 23,136,000 23,136,000 21,637,000 21,597,000 21,597,000 21,597,000 20,348,000 20,223,000 20,199,000 20,199,000 19,139,000 19,139,000 19,139,000 19,139,000 18,193,000 18,040,000 18,040,000 18,040,000 17,069,000 16,871,000 16,871,000 16,898,000 15,692,000 15,557,000 15,562,000 15,521,000 15,720,000 
        retained earnings
      421,891,000 395,643,000 384,416,000 382,572,000 381,443,000 392,484,000 381,680,000 371,872,000 376,505,000 384,702,000 374,672,000 366,690,000 359,124,000 351,297,000 347,730,000 339,592,000 333,324,000 328,358,000 323,431,000 315,555,000 329,064,000 325,097,000 320,080,000 312,965,000 336,584,000 334,246,000 327,191,000 317,652,000 308,742,000 301,073,000 292,930,000 283,767,000 275,887,000 267,902,000 252,061,000 245,422,000 238,374,000 231,733,000 225,844,000 218,756,000 213,436,000 207,478,000 200,916,000 194,442,000 189,555,000 184,873,000 181,781,000 177,898,000 172,769,000 167,598,000 163,152,000 157,827,000 151,444,000 146,614,000 144,671,000 139,130,000 133,258,000 126,961,000 121,279,000 115,525,000 111,681,000 107,824,000 103,168,000 96,261,000 90,470,000 85,332,000 
        accumulated other comprehensive income
      1,171,000 512,000 680,000 920,000 1,618,000 3,072,000 212,000 4,857,000 4,636,000 2,132,000 6,978,000 5,331,000 2,970,000 4,968,000 5,352,000           -1,105,000 -1,291,000 -1,275,000 -546,000 146,000 543,000 515,000 392,000 181,000 134,000 114,000 138,000 45,000                             
        total stockholders' equity
      2,666,216,000 1,438,808,000 983,340,000 979,527,000 975,744,000 988,186,000 787,796,000 781,316,000 612,738,000 616,725,000 609,520,000 469,137,000 457,315,000 449,526,000 445,428,000 431,283,000 423,792,000 417,333,000 411,021,000 401,494,000 414,303,000 356,317,000 350,457,000 342,954,000 366,401,000 363,101,000 355,860,000 346,337,000 337,531,000 328,395,000 320,507,000 311,316,000 303,313,000 293,095,000 277,192,000 270,533,000 263,509,000 255,194,000 248,940,000 241,515,000 236,294,000 229,309,000 222,156,000 216,130,000 211,120,000 205,489,000 202,272,000 198,365,000 193,140,000 186,803,000 182,241,000 176,800,000 170,271,000 164,335,000             
        total liabilities and stockholders' equity
      3,310,663,000 2,028,578,000 1,560,447,000 1,602,027,000 1,732,982,000 1,734,620,000 1,463,999,000 1,494,298,000 1,336,924,000 1,350,338,000 1,342,980,000 1,073,471,000 1,044,403,000 999,789,000 957,526,000 947,223,000 920,972,000 918,558,000 912,938,000 850,220,000 853,088,000 780,081,000 770,631,000 787,562,000 811,409,000 845,864,000 827,633,000 826,775,000 804,045,000 638,828,000 637,067,000 640,743,000 629,623,000 629,013,000 619,044,000 619,846,000 645,481,000 661,839,000 639,352,000 635,386,000 620,920,000 622,134,000 624,689,000 632,030,000 643,470,000 355,330,000 363,045,000 363,171,000 374,498,000 380,529,000 382,467,000 393,779,000 398,625,000 410,211,000             
        current assets held-for-sale
          259,511,000     93,002,000 98,021,000 107,059,000                                                       
        current liabilities held-for-sale
          53,034,000     53,391,000 60,398,000 64,070,000                                                       
        long-term debt, less current portion
       285,304,000 348,596,000 371,656,000 459,381,000 400,173,000 420,341,000 433,508,000 451,622,000 406,844,000 441,770,000 365,110,000 341,855,000 276,300,000 288,531,000 294,448,000 289,683,000 270,407,000 280,047,000 261,391,000 232,247,000 230,714,000 230,580,000 241,612,000 255,880,000 253,128,000 257,815,000 268,985,000 265,681,000 151,133,000 165,393,000 171,857,000 152,938,000 165,614,000 155,083,000 175,609,000 194,068,000 193,621,000 211,371,000 212,909,000 201,675,000 216,125,000 228,214,000 226,384,000 228,800,000 23,563,000 25,889,000 39,108,000 52,682,000 64,487,000 79,638,000 93,446,000 102,092,000 116,377,000 126,511,000 138,525,000 151,970,000 144,759,000         
        earn-out receivable
         23,300,000                                                               
        other current assets
            41,403,000 48,198,000 55,053,000 36,389,000 21,937,000 14,797,000 24,169,000 26,193,000 28,154,000 24,958,000 26,966,000 32,304,000 37,454,000 32,255,000 29,169,000 23,328,000 24,874,000 30,257,000 17,332,000 19,071,000 12,652,000 15,232,000 18,456,000 13,407,000 13,933,000 13,551,000 14,580,000 16,988,000 24,376,000 10,932,000 15,747,000 20,477,000 14,886,000 13,648,000 13,184,000 9,423,000 10,635,000 12,557,000 15,106,000 11,517,000 12,239,000 10,515,000 12,276,000 10,641,000 12,908,000 10,211,000 9,842,000 8,641,000 15,258,000 14,409,000 17,233,000 17,083,000 17,644,000 12,755,000 9,894,000 9,552,000 10,355,000 7,426,000 8,113,000 7,979,000 
        non-current assets held-for-sale
                                                                        
        non-current liabilities held-for-sale
                                                                        
        unbilled receivables
                6,257,000 6,229,000 35,884,000 38,307,000 44,084,000 41,310,000 31,211,000 31,882,000 30,824,000 30,718,000 43,694,000 22,358,000 26,953,000 41,859,000 43,928,000 46,279,000 54,151,000 45,961,000 44,450,000 41,255,000 35,771,000 37,955,000 33,970,000                                  
        operating lease - right-of-use assets
                 20,194,000 33,284,000 34,412,000 23,950,000 25,241,000 26,061,000 27,327,000 26,410,000 24,149,000 22,181,000 20,515,000 21,399,000 21,395,000 21,334,000                                          
        accumulated other comprehensive loss
                       -176,000 -367,000 -540,000 -692,000 -1,203,000 -1,669,000 -2,057,000 -1,978,000              -310,000 -647,000 -548,000 -75,000 -626,000 -178,000 -301,000    -96,000 -201,000 -317,000 -433,000 -579,000 -737,000 -901,000 -912,000 -887,000 -692,000 -830,000        
        current portion of earn-out obligation
                            1,905,000 3,600,000 5,300,000  10,700,000 10,700,000 10,700,000           10,500,000 8,015,000  9,038,000   9,455,000 9,154,000                    
        earn-out obligation, less current portion
                                              10,445,000  12,576,000 12,281,000 30,200,000                      
        long-term lease obligations under operating leases
                              25,014,000 24,441,000                                         
        operating lease - right-of-use asset
                               20,943,000                                         
        current portion of earn-out obligations
                               31,700,000                9,678,000  23,807,000 14,565,000   1,486,000 588,000      1,127,000 7,281,000 8,660,000          
        long-term lease obligations, less current portion
                                   18,913,000 19,344,000 19,765,000 20,175,000 20,581,000 20,917,000 21,292,000 21,652,000 21,959,000 22,321,000 22,632,000 22,914,000 23,251,000 23,635,000 23,988,000 24,296,000 24,584,000 24,863,000 25,139,000 25,399,000 25,721,000 26,820,000 26,935,000 27,190,000 27,435,000 33,289,000 34,238,000 34,136,000 33,938,000         
        earn-out obligations, less current portion
                               5,000,000                10,166,000        9,062,000    9,098,000 7,779,000 12,574,000 11,356,000 16,415,000         
        long-term operating lease liabilities
                                25,124,000 25,716,000 26,845,000                                      
        earn-out obligation
                                14,300,000 14,300,000 14,300,000                   8,363,000 8,648,000  8,987,000 8,941,000 9,375,000              
        deferred tax assets
                                               3,613,000 4,897,000 4,577,000 4,489,000 1,834,000 1,660,000 1,101,000 460,000 863,000 1,145,000 1,386,000 1,219,000 767,000 287,000 5,000 385,000 1,355,000 1,877,000 1,037,000 403,000 1,602,000 1,522,000 1,421,000 1,586,000 2,036,000 
        deferred income taxes
                                                38,767,000 38,525,000 38,648,000 1,634,000 928,000         1,069,000 1,010,000        182,000 324,000 
        receivables, principally u.s. government
                                                   59,391,000 63,839,000 62,134,000 72,936,000 78,387,000 71,460,000 80,772,000 80,850,000 90,621,000 109,763,000 112,292,000 112,850,000 117,568,000 114,441,000 153,514,000 137,931,000 156,938,000 145,076,000 138,533,000 154,209,000 175,185,000 
        other liabilities
                                                    1,499,000 1,386,000 1,273,000 1,267,000 1,047,000 934,000 1,283,000 1,283,000 605,000 490,000 376,000 261,000 158,000 31,000 5,528,000 7,960,000 8,031,000 1,088,000 1,106,000 1,100,000 
        current assets of discontinued operations
                                                                        
        current liabilities of discontinued operations
                                                                        
        assets held for sale
                                                        2,112,000 2,112,000 2,792,000 2,890,000             
        liabilities held for sale
                                                        385,000 380,000 511,000 551,000             
        liabilities and stockholders’ equity
                                                                        
        stockholders’ equity:
                                                                        
        total stockholders’ equity
                                                            162,074,000 156,522,000 150,675,000 143,600,000 137,582,000 132,658,000 128,841,000 123,776,000 118,985,000 112,083,000 106,251,000 101,310,000 
        total liabilities and stockholders’ equity
                                                            440,435,000 449,380,000 455,786,000 454,512,000 439,038,000 483,353,000 270,566,000 288,426,000 270,880,000 215,088,000 227,536,000 253,990,000 
        accrued expenses
                                                                35,916,000 29,965,000 29,413,000 36,584,000 34,379,000 28,991,000 28,849,000 34,069,000 
        long-term lease obligations
                                                                23,875,000 22,584,000 21,868,000 20,258,000 17,500,000    
        earn-out obligations
                                                                17,236,000 29,634,000       
        bank notes payable
                                                                        
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-06-30 2016-03-31 2015-12-31 2015-06-30 2015-03-31 2014-12-31 2014-06-30 2014-03-31 2013-12-31 2013-06-30 2013-03-31 2012-12-31 2012-06-30 2012-03-31 2011-12-31 2011-06-30 2011-03-31 2010-12-31 2010-06-30 2010-03-31 
                                                                  
          cash flows from operating activities:
                                                                  
          net income
        29,055,000 13,567,000   -8,973,000 13,062,000 11,650,000 -2,777,000 -6,611,000 11,605,000 9,557,000 8,855,000 9,117,000 4,848,000 9,419,000 7,548,000 6,244,000 6,200,000   5,111,000 6,013,000 8,108,000 -22,624,000 3,332,000 9,996,000 10,527,000 9,898,000 6,603,000 9,243,000 10,034,000 8,751,000 7,052,000 17,357,000 6,639,000 7,807,000 7,293,000 7,184,000 12,521,000 6,552,000 7,745,000 10,699,000 5,220,000 4,163,000 11,319,000 5,654,000 5,406,000 12,120,000 5,258,000 2,367,000 12,963,000 6,668,000 6,049,000 8,383,000 4,172,000 4,968,000 11,501,000 5,398,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                  
          depreciation and amortization
        12,747,000 10,194,000 10,190,000 9,635,000 9,905,000 8,351,000 7,543,000 6,923,000 5,945,000 5,955,000 5,450,000 5,764,000 6,247,000 6,293,000 6,427,000 6,303,000 6,547,000 6,604,000 6,729,000 6,323,000 5,944,000 5,922,000 5,810,000 5,928,000 6,475,000 6,305,000 6,985,000 6,207,000 7,430,000 6,240,000 6,261,000 6,239,000 6,484,000 6,298,000 6,380,000 6,493,000 6,711,000 6,531,000 12,935,000 6,241,000 6,326,000 12,778,000 6,101,000 4,496,000 9,554,000 4,795,000 4,961,000 10,102,000 5,099,000 5,486,000 10,180,000 4,850,000 5,085,000 5,409,000 2,382,000 2,458,000 4,267,000 2,152,000 
          amortization of debt issuance cost
        440,000  199,000 735,000 332,000  332,000 333,000 332,000  608,000 207,000 213,000                                              
          deferred taxes
        5,415,000 19,059,000 -15,643,000 2,290,000 -5,764,000 -156,000 -2,915,000 -3,162,000 -3,763,000 -800,000 354,000 -2,073,000 540,000 -360,000 11,000 -1,967,000 1,177,000 447,000 -931,000 -5,329,000 1,457,000 2,195,000 891,000 -4,572,000 1,592,000 725,000 -918,000 252,000 -564,000 362,000 -845,000 -1,171,000 283,000 -8,587,000 -973,000 -751,000 -223,000 1,901,000 -1,161,000 -129,000 1,484,000 -1,602,000 -1,313,000 532,000 -812,000 249,000 -451,000 -577,000 -48,000 -2,374,000 2,786,000 2,331,000 861,000 80,000 1,079,000 -434,000 -51,000 308,000 
          stock-based compensation
        4,581,000 2,927,000 3,245,000 3,141,000 3,522,000 1,818,000 1,685,000 2,314,000 2,498,000 1,927,000 1,917,000 1,813,000 2,081,000 868,000 922,000 1,367,000 1,308,000 964,000 712,000 841,000 1,415,000 1,135,000 410,000 416,000 897,000 672,000 610,000 342,000 1,640,000 881,000 470,000 413,000 1,263,000 1,133,000 471,000 380,000 1,084,000 362,000 1,361,000 1,028,000 383,000 1,416,000 788,000 129,000 1,488,000 1,048,000 660,000 650,000 410,000 52,000 467,000 185,000 247,000 307,000 164,000 875,000 392,000 205,000 
          impairment and loss on sale of business segments
         -157,000 13,251,000 33,952,000                                                      
          loss on sale of property and equipment
        3,000 35,000 10,000 58,000 421,000                                   46,000 34,000  11,000 233,000     -67,000 -1,000 3,000 7,000   
          gain on settlement of corporate-owned life insurance
        -357,000                                                          
          interest income on note receivable
        -694,000 -699,000                                                         
          changes in operating assets and liabilities, net of impact of acquisitions:
                                                                  
          receivables
        -25,772,000 -3,288,000 6,808,000 -10,658,000 -19,393,000 -7,519,000 5,572,000 -13,688,000 -24,604,000 -619,000 -4,222,000 -11,281,000 -9,801,000 -12,100,000 11,101,000 -18,236,000 -7,371,000 -92,000 8,237,000 -14,771,000 -2,787,000 3,664,000 -520,000 4,751,000 -163,000 -951,000 4,219,000 -9,266,000 2,667,000 -4,492,000 -393,000 2,109,000 -978,000 -25,463,000 8,071,000 9,602,000 10,671,000 -15,111,000 -12,547,000 1,593,000 -2,872,000 -6,190,000 -9,195,000 4,448,000 16,253,000 5,451,000 -5,727,000 10,545,000 9,869,000 17,246,000 5,276,000 4,718,000 -3,127,000 15,377,000 19,007,000 -11,862,000 36,652,000 20,976,000 
          contract assets
        -4,755,000 -5,616,000 15,000 -2,049,000 -920,000 2,514,000 -973,000 -1,583,000 7,823,000                                                  
          inventories
        -71,544,000 -30,348,000 -1,044,000 -19,119,000 -6,359,000 -4,860,000 -1,400,000 -5,497,000 -19,911,000 -26,662,000 -15,287,000 -12,350,000 -33,230,000 -30,790,000 -12,164,000 -6,824,000 -9,321,000 -13,503,000 -21,361,000 -16,247,000 -28,910,000 -22,606,000 -7,682,000 -11,629,000 -8,255,000 -14,679,000 -5,598,000 -16,144,000 -7,798,000 890,000 -2,096,000 -15,457,000 -18,895,000 2,934,000 287,000 5,310,000 -4,782,000 -7,405,000 -8,250,000 -4,510,000 -1,560,000 -8,792,000 -1,298,000 -2,376,000 -4,793,000 -1,110,000 948,000 264,000 908,000 1,814,000 -1,129,000 -464,000 -1,951,000 -1,081,000     
          prepaid expenses and other current assets and other assets
        515,000 4,459,000 17,153,000 3,766,000 -29,910,000                                                      
          operating lease assets and liabilities
        396,000 1,539,000 2,410,000 -1,945,000 372,000 195,000 -10,080,000 -196,000 -166,000 -128,000 -195,000 -135,000 68,000                                              
          accounts payable and deferred compensation
        -10,847,000 31,135,000 -28,343,000 -2,832,000 -10,892,000 36,104,000 -20,813,000 -21,371,000 -25,676,000 40,630,000 10,712,000 -9,172,000 -18,257,000 36,364,000 4,677,000 16,149,000 -20,997,000 15,255,000 25,972,000 -9,068,000 1,051,000 6,793,000 -14,802,000 11,117,000 395,000 -4,068,000 -2,356,000 11,496,000 2,653,000 7,567,000 -8,808,000 -17,845,000 11,681,000 18,854,000 -2,930,000 -18,556,000 -20,955,000 35,092,000 15,474,000 13,097,000 2,873,000 -721,000 -1,246,000 -3,653,000 -5,201,000 2,343,000 5,215,000 -2,875,000 -1,237,000 -13,881,000 -10,446,000 -9,324,000 -897,000 -14,060,000 -13,267,000 10,085,000 -44,315,000 -26,041,000 
          accrued expenses and other liabilities
        -1,447,000  3,386,000 6,579,000 -12,514,000  13,875,000 5,522,000 -14,834,000                                                  
          net cash from operating activities
        -62,264,000 37,642,000 24,089,000 11,891,000 -46,632,000 55,375,000 10,176,000 -17,528,000 -79,060,000 27,942,000 15,320,000 -16,417,000 -48,674,000 12,257,000 15,932,000 -1,964,000 -18,174,000 12,921,000 23,445,000 -17,601,000 -36,367,000 526,000 12,427,000 16,050,000 6,758,000 555,000 13,387,000 1,281,000 2,771,000 15,434,000 7,045,000 -16,917,000 13,293,000 10,909,000 20,474,000 18,386,000 651,000 18,801,000 15,115,000 15,392,000 19,072,000 3,930,000 -580,000 9,997,000 25,936,000 13,838,000 17,213,000 23,910,000 14,919,000 18,427,000 21,928,000 6,693,000 3,518,000 1,250,000 -309,000 7,702,000 4,001,000 -4,114,000 
          capital expenditures
        -6,457,000 -6,768,000 -6,049,000 -5,589,000 -2,875,000 -3,265,000 -5,765,000 -3,945,000 -7,729,000 -7,871,000 -4,658,000 -3,297,000 -2,840,000 -3,796,000 -4,670,000 -1,477,000 -1,269,000 -2,914,000 -2,448,000 -3,049,000 -2,109,000 -1,471,000 -1,128,000 -1,104,000 -724,000 -1,941,000 -1,386,000 -5,702,000 -601,000 -595,000 -642,000 -827,000 -1,053,000 -1,356,000 -1,135,000 -838,000 -414,000 -1,108,000 -4,224,000 -1,428,000 -2,743,000 -5,212,000 -3,384,000 -689,000 -1,828,000 -859,000 -1,157,000 -2,489,000 -1,631,000 -9,228,000 -11,141,000 -8,620,000 -2,815,000 -2,101,000 -904,000 -1,174,000 -2,565,000 -1,019,000 
          free cash flows
        -68,721,000 30,874,000 18,040,000 6,302,000 -49,507,000 52,110,000 4,411,000 -21,473,000 -86,789,000 20,071,000 10,662,000 -19,714,000 -51,514,000 8,461,000 11,262,000 -3,441,000 -19,443,000 10,007,000 20,997,000 -20,650,000 -38,476,000 -945,000 11,299,000 14,946,000 6,034,000 -1,386,000 12,001,000 -4,421,000 2,170,000 14,839,000 6,403,000 -17,744,000 12,240,000 9,553,000 19,339,000 17,548,000 237,000 17,693,000 10,891,000 13,964,000 16,329,000 -1,282,000 -3,964,000 9,308,000 24,108,000 12,979,000 16,056,000 21,421,000 13,288,000 9,199,000 10,787,000 -1,927,000 703,000 -851,000 -1,213,000 6,528,000 1,436,000 -5,133,000 
          cash flows from investing activities:
                                                                  
          purchases of property and equipment
        -6,457,000 -6,768,000 -6,049,000 -5,589,000 -2,875,000 -3,265,000 -5,765,000 -3,945,000 -7,729,000 -7,871,000 -4,658,000 -3,297,000 -2,840,000 -3,796,000 -4,670,000 -1,477,000 -1,269,000 -2,914,000 -2,448,000 -3,049,000 -2,109,000 -1,471,000 -1,128,000 -1,104,000 -724,000 -1,941,000 -1,386,000 -5,702,000 -601,000 -595,000 -642,000 -827,000 -1,053,000 -1,356,000 -1,135,000 -838,000 -414,000 -1,108,000 -4,224,000 -1,428,000 -2,743,000 -5,212,000 -3,384,000 -689,000 -1,828,000 -859,000 -1,157,000 -2,489,000 -1,631,000 -9,228,000 -11,141,000 -8,620,000 -2,815,000 -2,101,000 -904,000 -1,174,000 -2,565,000 -1,019,000 
          proceeds from the sale of business segments, net of cash divested
         157,000                                                        
          cash paid for acquisitions, net of cash acquired
        -5,391,000 -346,399,000 -6,000   -170,916,000 58,000   93,000 -206,963,000 43,000 -11,754,000     -104,000 -38,447,000 -14,785,000     -521,000 -112,660,000           -3,954,000 -188,771,000 -188,771,000         -4,607,000 -12,000      
          purchases of intangible assets
        -16,000,000                                                          
          proceeds from corporate owned life insurance settlements
        760,000                                                          
          net cash from investing activities
        -27,088,000 -353,010,000 -6,055,000   -176,142,000 -5,707,000   -7,778,000 -211,621,000 -1,697,000 -14,594,000 804,000 -3,508,000 -1,066,000 1,393,000 -1,793,000 -41,048,000 -2,323,000 -16,468,000 -425,000 -705,000 -1,478,000 22,827,000 -2,462,000 -1,386,000 -5,701,000 -113,258,000 -524,000 1,063,000 -781,000 -1,053,000 -1,313,000 -846,000 -438,000 -414,000 -1,039,000 -4,196,000 -1,422,000 -6,463,000 -193,756,000 -191,948,000 -689,000 -1,828,000 -859,000 -1,157,000 -2,489,000 -1,631,000 -9,228,000 -15,748,000 -13,541,000 -2,797,000 -178,410,000 -1,172,000 -1,367,000 -4,410,000 -1,464,000 
          cash flows from financing activities:
                                                                  
          borrowings on bank credit facilities
        47,273,000 19,269,000 23,185,000 550,392,000 74,489,000 212,071,000 107,284,000 208,799,000 211,082,000 234,074,000                                                 
          repayments on bank credit facilities
        -49,148,000 -82,760,000 -46,444,000 -634,392,000 -39,989,000 -232,571,000 -120,784,000 -227,246,000 -159,135,000 -264,574,000                                                 
          proceeds from issuance of common stock
        829,457,000 441,704,000   164,306,000 1,000   454,000 129,110,000 208,000 248,000 413,000                                            
          proceeds from issuance of tangible equity units
        445,386,000                                                          
          payment of debt financing costs
        -1,313,000       -1,442,000                -1,702,000 -10,000 106,000 -1,798,000        -2,699,000 -2,280,000          -13,000 -1,707,000     
          payment of taxes for equity transactions
        -8,930,000 -61,000 -829,000 -47,000 -4,201,000 125,000 -213,000 -466,000 -2,079,000 -82,000 -1,031,000                              -341,000   -314,000             
          dividends paid
        -2,340,000 -2,068,000 -2,068,000 -2,067,000 -2,060,000 -2,041,000 -1,843,000 -1,599,000 -1,577,000 -1,575,000 -1,290,000 -1,288,000 -1,283,000 -1,279,000 -1,280,000 -1,277,000 -1,275,000 -1,143,000 -1,145,000 -1,142,000 -997,000 -995,000 -994,000 -993,000 -988,000 -988,000 -988,000 -878,000 -872,000 -869,000 -871,000 -763,000 -759,000 -757,000 -759,000 -650,000 -650,000 -647,000 -1,186,000 -591,000 -592,000 -1,075,000 -535,000 -535,000 -963,000 -481,000 -480,000 -850,000 -424,000 -424,000 -738,000 -368,000 -367,000 -627,000 -313,000 -312,000 -518,000 -258,000 
          other
        -984,000                                                          
          net cash from financing activities
        1,259,401,000 375,942,000 -26,156,000 -88,235,000 28,239,000 141,890,000 -15,555,000 141,180,000 48,291,000 -33,063,000 212,790,000 21,922,000 63,322,000 -12,673,000 -12,705,000 2,903,000 16,761,000 -10,993,000 17,649,000 19,914,000 52,804,000 -274,000 -11,384,000 -14,902,000 -29,776,000 1,546,000 -11,666,000 4,351,000 111,154,000  -7,843,000 17,701,000 -12,243,000 -9,444,000 -19,873,000 -17,688,000 -208,000 -17,887,000 -10,979,000 -14,123,000 -12,063,000 190,007,000 192,733,000 -9,373,000 -24,026,000 -12,842,000 -16,116,000 -22,656,000 -13,360,000   6,765,000 -586,000 172,044,000 -1,980,000 -2,534,000 -518,000 -258,000 
          net increase in cash and cash equivalents
        1,170,049,000   6,398,000 -18,522,000 21,123,000 -11,086,000 8,424,000 2,639,000 -12,899,000 16,489,000 3,808,000 54,000 388,000    135,000    -173,000 338,000 -330,000 -191,000 -361,000 335,000 -69,000 667,000 -727,000   -3,000 152,000 -245,000 260,000 29,000  -60,000 -153,000 546,000 181,000 205,000 -65,000 82,000 137,000 -60,000   635,000      3,801,000   
          cash and cash equivalents, beginning of period
        69,358,000 29,030,000 7,930,000                                                
          cash and cash equivalents, end of period
        1,239,407,000 60,574,000 -8,122,000 6,398,000 10,508,000 21,123,000 -11,086,000 8,424,000 10,569,000 -12,899,000 16,489,000                                                
          (a) the cash flows related to discontinued operations and held-for-sale assets and liabilities have not been segregated, and remain included in the major classes of assets and liabilities. accordingly, the consolidated statements of cash flows include the results of continuing and discontinued operations. see note "discontinued operations".
                                                                  
          amortization of debt issuance costs
                                                                  
          specific provision for inventory
                                                                  
          lease abandonment and termination costs
                                                                 
          earn-out receivable adjustments
                                                                  
          accrued expenses and other current and noncurrent liabilities
                 1,092,000 -2,489,000 6,429,000 -9,484,000 11,946,000 1,008,000 -25,000 -2,590,000 -6,545,000 -2,561,000 2,020,000 7,999,000  728,000 8,687,000 -4,961,000  4,675,000 -1,069,000 -1,675,000                              
          proceeds from payments on notes receivable
                     4,600,000 1,162,000 411,000 2,662,000 1,356,000 412,000 726,000 412,000                                      
          (a) the cash flows related to discontinued operations and held-for-sale assets and liabilities have not been segregated and remain included in the major classes of assets and liabilities. accordingly, the consolidated statements of cash flows include the results of continuing and discontinued operations. see note "discontinued operations".
                                                                  
          earn-out receivable fair value adjustments
                                                                  
          net decrease in cash and cash equivalents
                           -10,000 -31,000                           -1,235,000 -72,000  -9,000 -83,000  -5,116,000 -3,461,000  -927,000 -5,836,000 
          supplemental disclosure of noncash investing and financing activities:
                                                                  
          note receivable from the sale of business segment
                                                                 
          net loss
                                                                  
          adjustments to reconcile net loss to net cash from operating activities:
                                                                  
          lease abandonment costs
                                                                  
          earn-out receivable adjustment
                                                                  
          earn-out receivable from the sale of business segment
                                                                  
          proceeds from the sale of business segment
            2,746,000 -1,961,000 981,000 41,137,000                                                  
          net cash (used) provided in investing activities
            -129,000                                                      
          impairment and loss on sale of business segment
             2,536,000 16,867,000                                                  
          earn-out obligation payments
                       -500,000 -500,000    -31,701,000                      660,000 -314,000 -314,000 -1,384,000     
          provision for inventory
                                                                
          other current assets and other assets
              6,352,000 2,797,000 -17,381,000 -5,313,000 3,396,000 -2,683,000 1,409,000                                              
          proceeds from the payment on notes receivable
                                                                 
          (a) the cash flows related to discontinued operations and held-for-sale assets and liabilities have not been segregated, and remain included in the major classes of assets and liabilities. accordingly, the consolidated statements of cash flows include the results of continuing and discontinued operations.
                                                                  
          net cash provided (used) in investing activities
                33,408,000                                                  
          gain on sale of property and equipment
                         -16,000    -123,000 72,000 127,000 -1,127,000                                  
          proceeds from the sale of property and equipment
                         -131,000 185,000 14,000 28,000 423,000 2,424,000 1,000 3,000 71,000 5,000   43,000 289,000   69,000 28,000 6,000 234,000 227,000 207,000          30,000 7,000 2,000    
          (a) the cash flows related to discontinued operations and held-for-sale assets and liabilities have not been segregated and remain included in the major classes of assets and liabilities. accordingly, the consolidated statements of cash flows include the results of continuing and discontinued operations.
                                                                  
          unbilled receivables
                  5,519,000 -2,533,000 2,423,000 5,777,000 -2,774,000 -10,099,000 671,000 -1,058,000 -106,000 12,963,000 -17,341,000 4,595,000 14,906,000 2,234,000 -2,041,000 8,303,000 -8,190,000 -1,511,000 -3,195,000 -6,592,000 1,694,000 -3,985,000 13,589,000                          
          borrowings on loan agreement
                   146,062,000 176,751,000 162,172,000 121,857,000 124,123,000 112,071,000 97,488,000 135,582,000 112,066,000 146,431,000 92,320,000 105,561,000 103,970,000 131,148,000 369,758,000 81,775,000 106,128,000 194,598,000 70,522,000 109,395,000 111,885,000 247,669,000 90,018,000 76,984,000 85,549,000 96,124,000 90,491,000 133,279,000 49,699,000                   
          repayments on loan agreement
                   -123,060,000 -111,363,000 -172,793,000 -132,982,000 -119,567,000 -93,005,000 -107,338,000 -115,980,000 -90,719,000 -144,257,000 -91,544,000 -115,951,000 -117,151,000 -127,692,000 -367,224,000 -92,453,000 -102,333,000 -80,183,000 -84,915,000 -115,987,000 -93,166,000 -256,368,000 -98,372,000 -95,771,000 -102,267,000 -94,875,000 -107,438,000 -134,012,000 -62,468,000                   
          cash and cash equivalents at beginning of year
                    478,000                                              
          cash and cash equivalents at end of year
                    532,000                                              
          loss on sale of a business entity and certain assets
                             678,000 7,536,000                                  
          goodwill and intangible asset impairment
                                                                
          earn-out obligation fair value adjustment
                             -1,905,000 -1,695,000                                    
          other current assets and noncurrent assets
                     -10,711,000 -2,695,000 2,726,000 6,158,000 4,665,000 -2,219,000 -6,387,000 -10,306,000 397,000 6,201,000 -11,097,000 2,777,000 -6,924,000 3,433,000 1,076,000 -4,990,000 1,271,000 -709,000 1,058,000 3,169,000 7,073,000 -13,117,000 4,715,000 5,010,000 -5,005,000 -5,762,000 -5,330,000 1,921,000 1,443,000 -741,000 1,933,000 -1,026,000 -2,395,000 2,541,000 -3,110,000 -2,760,000 6,300,000 720,000 -2,708,000 3,611,000 -4,531,000 -4,456,000 523,000 738,000 -544,000 
          proceeds from sale of a business entity and certain assets
                                                                  
          inventory valuation adjustment
                                                                
          loss on sale of ppe
                                                                  
          payments of taxes for equity transactions
                      -50,000 -362,000 -530,000  -291,000 -390,000  -92,000 -543,000  -268,000 -687,000  -641,000  -500,000  -499,000 -499,000  -342,000   -314,000              
          cash and cash equivalents at beginning of period
                      518,000  378,000  734,000  162,000  624,000  428,000  740,000 740,000  263,000 263,000  220,000 220,000  1,501,000 1,501,000  451,000 451,000  5,764,000 5,764,000  8,024,000 8,024,000 
          cash and cash equivalents at end of period
                      -281,000 -127,000 498,000  46,000 -10,000 347,000  338,000 -330,000 543,000  335,000 -69,000 829,000  265,000 3,000 621,000  -245,000 260,000 457,000  680,000 587,000  444,000 468,000  302,000 357,000  266,000 1,429,000  442,000 368,000  648,000 2,303,000  7,097,000 2,188,000 
          earn-out obligation in connection with acquisitions
                                                                  
          net decreases in cash and cash equivalents
                       -127,000 -20,000                                          
          proceeds from issuance of common stock, net of underwriters' discounts and issuance costs
                         52,017,000                                      
          proceeds from the sale of a business entity and certain assets
                              -374,000 21,127,000                                  
          gain on sale of contract
                                                                 
          accrued expenses and other current liabilities
                                     495,000 3,558,000 3,381,000 -9,949,000 -8,354,000 16,021,000 3,746,000 -3,851,000 -4,386,000 2,492,000 -1,429,000 3,730,000 -5,047,000 1,074,000 1,749,000 -1,219,000 -2,057,000 3,788,000 -2,814,000 -2,612,000 -4,880,000 1,595,000 976,000       
          long-term lease obligations
                                     -431,000 -421,000 -410,000 -406,000 -336,000 -375,000 -360,000 -307,000 -362,000 -619,000 -337,000 -349,000 -581,000 -280,000 -272,000 -567,000 -314,000 -1,061,000 -500,000 -245,000 443,000  -102,000 -108,000 26,000 10,000    
          other long-term liabilities
                                                                  
          proceeds from the sale of contract
                                                                 
          payments on financing lease obligations
                                                                  
          earn-out obligation adjustment
                                301,000             -1,329,000 -1,384,000 -609,000 527,000 310,000 301,000 787,000 174,000 75,000 58,000 277,000 192,000 -713,000 -552,000 -953,000 -955,000     
          payments on capital lease obligations
                                      -370,000 -361,000 -346,000  -327,000 -320,000 -307,000 -293,000 -546,000 -264,000 -256,000 -479,000 -233,000 -221,000 -413,000 -201,000 -188,000 -356,000 -173,000 -188,000 -384,000 -37,000       
          net cash from by financing activities
                                                                  
          changes in operating assets and liabilities:
                                                                  
          earn-out obligations
                                                                  
          changes in operating assets and liabilities, net of impact of acquisition:
                                                                  
          other liabilities
                                                   -1,499,000 119,000  220,000 -349,000  648,000 229,000 115,000 103,000 -122,000 -2,432,000 -71,000 -12,000 6,000 
          earn-out obligation payment
                                              -8,015,000                    
          impairment of goodwill and intangible assets
                                                         5,014,000         
          earn-out obligation
                                                                  
          borrowings on loan arrangement
                                                 351,596,000 300,471,000 84,961,000 142,039,000 72,288,000 72,840,000 139,037,000 69,245,000 61,246,000 147,624,000 59,616,000 59,830,000 314,517,000 78,661,000 15,312,000 120,366,000 56,808,000 
          repayments on loan arrangement
                                                 -156,994,000 -104,349,000 -93,578,000 -164,375,000 -84,134,000 -88,031,000 -160,487,000 -82,008,000 -69,858,000 -152,377,000 -52,446,000 -60,036,000 -140,139,000 -80,328,000 -17,534,000 -120,366,000 -56,808,000 
          assets held for sale
                                                       163,000           
          cash paid for acquisition, net of cash acquired
                                                          -4,607,000   -174,932,000  -363,000   
          adjustments to reconcile net income to net cash
                                                                  
          provided by operating activities:
                                                                  
          net cash (used in) provided by financing activities
                                                          -6,189,000        
          from operating activities:
                                                                  
          excess tax benefits on stock-based compensation
                                                                  
          changes in operating assets and liabilities,
                                                                  
          net of impact of acquisitions:
                                                                  
          proceeds from the exercise of stock options
                                                                  
          accrued expenses
                                                             -7,582,000 -6,971,000 1,195,000 -5,181,000 -6,577,000 
          used in operating activities:
                                                                  
          contingent consideration payments
                                                              -270,000 -1,845,000 -445,000 
          supplemental disclosure of cash flow information:
                                                                  
          non-cash financing and investing activities:
                                                                  
          landlord financed construction in progress
                                                                  
          loss (gain) on sale of property and equipment
                                                                10,000 3,000 
          (gain) loss on sale of property and equipment
                                                                  
          contract inventories
                                                                  
          cash paid for acquired businesses, net of cash acquired