7Baggers

Healthcare Services Group, Inc
(NASDAQ:HCSG) 

HCSG stock logo

Healthcare Services Group, Inc. provides management, administrative, and operating services to the housekeeping, laundry, linen, facility maintenance, and dietary service departments of nursing homes, retirement complexes, rehabilitation centers, and hospitals in the United States. It operates throu...

Full Time Employees: 51,000
Sector: Healthcare
Industry: Medical Care Facilities

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• Employees:
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At a glance:
Bull Thesis:
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Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2004-09-30 
                                                                                    
      revenues
    462,766,000 466,682,000 464,338,000 458,491,000 447,662,000 437,812,000 428,149,000 426,288,000 423,433,000 423,840,000 411,388,000 418,931,000 417,230,000 424,020,000 414,488,000 424,857,000 426,811,000 420,447,000 415,590,000 398,171,000 407,751,000 423,177,000 435,947,000 452,029,000 449,150,000 446,960,000 455,606,000 462,101,000 476,111,000 496,408,000 506,871,000 503,732,000 501,810,000 499,410,000 491,355,000 470,876,000 404,490,000 398,565,000 392,734,000 386,556,000 384,807,000 366,082,000 360,165,000 355,356,000 355,246,000 341,624,000 320,099,000 319,295,000 312,165,000 303,833,000 298,549,000 273,604,000 273,904,000 277,039,000 272,681,000 267,108,000 260,607,000 250,239,000 218,929,000 211,507,000 208,390,000 202,088,000 195,114,000 192,954,000 183,801,000 182,561,000 178,829,000 170,896,000 160,409,000 154,563,000 152,978,000 147,918,000 147,259,000 148,584,000 146,081,000 142,377,000 140,679,000 139,790,000 130,083,000 112,324,057 
      operating costs and expenses:
                                                                                    
      costs of services provided
    386,932,000 394,611,000 367,933,000 455,533,000 379,691,000 379,209,000 364,730,000 384,742,000 358,911,000 350,383,000 377,554,000 367,728,000 360,978,000 366,810,000 376,894,000 379,370,000 373,262,000 377,230,000 364,822,000 336,411,000 336,619,000 352,201,000 365,443,000 387,517,000 387,156,000 386,723,000 398,404,000 400,485,000 427,265,000 425,256,000 439,203,000 437,618,000 469,904,000 432,694,000 426,924,000 407,322,000 345,570,000 340,897,000 336,340,000 332,211,000 330,044,000 319,310,000 308,645,000 304,217,000 303,936,000 296,350,000 315,757,000 275,815,000 267,371,000 269,347,000 255,964,000 234,602,000 235,191,000 238,832,000 234,281,000 230,206,000 227,496,000 217,190,000 188,041,000 181,742,000 179,985,000 172,953,000 168,384,000 165,240,000 158,573,000 109,737,500 155,228,000 145,830,000 137,892,000 96,789,250 134,228,000 127,074,000 125,854,000 91,468,500 125,476,000 121,085,000 119,314,000 80,055,000 112,195,000 98,643,843 
      selling, general and administrative expense
    41,997,000 36,167,500 50,541,000 49,163,000 44,966,000 44,824,000 46,888,000 44,437,000 46,911,000 46,249,000 39,047,000 41,429,000 40,047,000 39,524,000 35,803,000 29,281,000 35,736,000 44,290,000 38,780,000 50,051,000 39,987,000 41,959,000 37,337,000 41,465,000 30,017,000 28,297,250 33,479,000 38,609,000 41,101,000 26,152,000 36,713,000 34,118,000 33,777,000 23,285,250 32,940,000 31,991,000 28,210,000 19,548,000 27,182,000 25,664,000 25,346,000                                        
      other income:
                                                                                    
      investment and other income
    1,069,000 3,051,000 11,837,000 4,735,000 1,284,000 2,204,000 3,825,000 2,621,000 5,699,000 5,891,000 394,000 3,551,000 3,102,000 3,607,000 1,000 -7,511,000 -1,523,000 3,128,000 462,000 3,684,000 2,165,000 6,155,000 4,279,000 7,745,000 -4,827,000 3,347,000 733,000 1,393,000 5,203,000                                                    
      interest expense
    -365,000 -374,000 -393,000 -418,000 -395,000 -1,178,000 -1,548,000 -1,716,000 -1,996,000 -2,058,000 -2,132,000 -1,915,000 -1,751,000 -1,235,000 -799,000 -445,000 -509,000 -368,000 -329,000 -330,000 -358,000 -312,000 -314,000 -380,000 -368,000 -880,000 -740,000 -783,000 -1,056,000                                                    
      income before taxes
    34,541,000 28,552,000 57,308,000 -41,888,000 23,894,000 14,805,000 18,808,000 -1,986,000                                                                         
      income tax provision
    8,481,000 -2,692,000 14,355,000 -9,522,000 6,666,000 2,885,000 4,778,000 -198,000 6,005,000 8,443,000 -1,457,000 2,812,000 4,872,000 3,899,000 671,000 1,430,000 4,452,000 -418,000 2,581,000 5,498,000 8,299,000 7,113,000 9,488,000 7,311,000 6,592,000 3,384,750 5,372,000 5,431,000 2,736,000 3,232,750 6,896,000 7,502,000 -1,467,000 7,561,750 9,458,000 10,527,000 10,262,000 8,190,250 10,860,000 10,923,000 10,978,000 7,290,500 9,655,000 9,969,000 9,538,000 927,750 -12,901,000                                  
      net income
    26,060,000 31,244,000 42,953,000 -32,366,000 17,228,000 11,920,000 14,030,000 -1,788,000 15,309,000 22,598,000 -5,494,000 8,598,000 12,684,000 16,159,000 322,000 6,820,000 11,329,000 2,105,000 9,540,000 9,565,000 24,653,000 27,747,000 27,644,000 23,101,000 20,190,000 18,895,000 18,344,000 18,186,000 9,156,000 31,552,000 26,086,000 25,814,000 72,000 20,186,000 23,472,000 22,551,000 22,017,000 20,299,000 19,711,000 18,760,000 18,626,000 9,134,000 17,086,000 16,288,000 15,516,000 15,472,000 -22,182,000 13,921,000 14,639,000 5,452,000 13,790,000 12,933,000 14,954,000 12,798,000 11,517,000 11,320,000 8,578,000 10,565,000 9,996,000 9,828,000 7,767,000 9,123,000 9,169,000 8,721,000 7,428,000 6,566,000 8,225,000 7,815,000 7,736,000 7,283,000 5,522,000 6,953,000 6,857,000 7,304,000 7,299,000 7,524,000 7,450,000 6,895,000 6,564,000 3,723,657 
      yoy
    51.27% 162.11% 206.15% 1710.18% 12.54% -47.25% -355.37% -120.80% 20.70% 39.85% -1806.21% 26.07% 11.96% 667.65% -96.62% -28.70% -54.05% -92.41% -65.49% -58.59% 22.11% 46.85% 50.70% 27.03% 120.51% -40.11% -29.68% -29.55% 12616.67% 56.31% 11.14% 14.47% -99.67% -0.56% 19.08% 20.21% 18.21% 122.24% 15.36% 15.18% 20.04% -40.96% -177.03% 17.00% 5.99% 183.79% -260.86% 7.64% -2.11% -57.40% 19.74% 14.25% 74.33% 21.14% 15.22% 15.18% 10.44% 15.81% 9.02% 12.69% 4.56% 38.94% 11.48% 11.59% -3.98% -9.84% 48.95% 12.40% 12.82% -0.29% -24.35% -7.59% -7.96% 5.93% 11.20% 102.06%     
      qoq
    -16.59% -27.26% -232.71% -287.87% 44.53% -15.04% -884.68% -111.68% -32.26% -511.32% -163.90% -32.21% -21.51% 4918.32% -95.28% -39.80% 438.19% -77.94% -0.26% -61.20% -11.15% 0.37% 19.67% 14.42% 6.85% 3.00% 0.87% 98.62% -70.98% 20.95% 1.05% 35752.78% -99.64% -14.00% 4.08% 2.43% 8.46% 2.98% 5.07% 0.72% 103.92% -46.54% 4.90% 4.98% 0.28% -169.75% -259.34% -4.90% 168.51% -60.46% 6.63% -13.51% 16.85% 11.12% 1.74% 31.97% -18.81% 5.69% 1.71% 26.54% -14.86% -0.50% 5.14% 17.41% 13.13% -20.17% 5.25% 1.02% 6.22% 31.89% -20.58% 1.40% -6.12% 0.07% -2.99% 0.99% 8.05% 5.04% 76.28%  
      per share data:
                                                                                    
      basic income per common share
    0.37 0.095 0.59 -0.44                                                                             
      diluted income per common share
    0.37 0.095 0.59 -0.44                                                                             
      weighted-average number of common shares outstanding:
                                                                                    
      basic
    69,860 72,380 72,237 73,161 73,670 73,754 73,687 73,853 73,926 74,288 74,364 74,478 74,497 74,336 74,340 74,337 74,326 74,816 74,943 75,005 75,003 74,696 74,700 74,695 74,658 74,362 74,387 74,352 74,301 74,002 74,019 73,982 73,913 73,355 73,461 73,276 73,074 72,754 72,839,000 72,568,000 72,364,000 71,826,000 72,009,000 71,657,000 71,469,000 70,616,000 70,671,000 70,440,000 70,321,000 69,206,000 69,706,000 68,599,000 68,463,000 67,511,000 67,651,000 67,296,000 67,084,000 66,637,000 66,710,000 66,517,000 66,401,000 65,917,000 44,026,000 43,965,000                 
      diluted
    71,049 73,032 72,966 73,161 73,961 73,988 73,926 73,853 74,055 74,340 74,364 74,567 74,518 74,351 74,348 74,358 74,333 74,962 75,076 75,212 75,224 74,785 74,777 74,761 74,767 74,590 74,507 74,619 74,719 74,612 74,579 74,487 74,725 74,348 74,538 74,269 73,946 73,474 73,592,000 73,316,000 73,014,000 72,512,000 72,691,000 72,286,000 72,159,000 71,341,000 70,671,000 71,206,000 71,072,000 70,045,000 70,531,000 69,370,000 69,361,000 68,485,000 68,635,000 68,228,000 68,085,000 67,585,000 67,530,000 67,545,000 67,454,000 67,008,000 44,719,000 44,652,000                 
      comprehensive income:
                                                                                    
      other comprehensive income
                                                                                    
      unrealized gain on available-for-sale marketable securities, net of taxes
    -387 281 713 372 503 -1,793 2,093 -445 -328   -860 1,207   -1,945  19 -1,014 703  648 873 1,656 -533 97 457 791 1,416 870 -508 97 -1,138 -7 82 602                                             
      total comprehensive income
    25,673 31,525 43,666  17,731 10,127 16,123 -2,233 14,981 25,531 -7,141 7,738 13,891 18,189 -1,971 4,875 6,060 2,124 8,526 10,268 23,382 28,395 28,517 24,757 19,657 18,992 18,801 18,977 10,572 32,422 25,578 25,911 -1,066 20,179 23,554 23,153 22,496 -57,785,466 19,342,000 19,338,000 19,181,000 9,471,000 17,284,000 16,268,000 15,519,000 15,445,000 -22,186,000 13,927,000 14,640,000 5,458,000 13,789,000 12,827,000 14,977,000 12,754,000 11,535,000                          
      total comprehensive loss
       -31,994                                                                             
      basic earnings per common share
        0.23 0.17 0.19 -0.02 0.21 0.31 -0.07 0.12 0.17 0.22  0.09 0.15 0.03 0.13 0.13 0.33 0.37 0.37 0.31 0.27 0.26 0.25 0.24 0.12 0.43 0.35 0.35  0.27 0.32 0.31 0.3 0.27 0.27 0.26 0.26 0.13 0.24 0.23 0.22 0.22 -0.31 0.2 0.21 0.08 0.2 0.19 0.22 0.18 0.17 0.17 0.13 0.16 0.15 0.15 0.12 -0.06 0.21 0.2 0.17 0.15 0.19 0.18 0.18 0.17 0.13 0.16 0.16 0.17 0.17 0.27 0.27 0.25 0.24 0.21 
      diluted earnings per common share
        0.23 0.16 0.19 -0.02 0.21 0.31 -0.07 0.12 0.17 0.22  0.09 0.15 0.03 0.13 0.13 0.33 0.37 0.37 0.31 0.27 0.26 0.25 0.24 0.12 0.42 0.35 0.35  0.27 0.31 0.3 0.3 0.27 0.27 0.26 0.26 0.12 0.24 0.23 0.22 0.22 -0.31 0.2 0.21 0.07 0.2 0.19 0.22 0.19 0.17 0.17 0.13 0.15 0.15 0.15 0.12 -0.06 0.21 0.2 0.17 0.15 0.19 0.18 0.18 0.16 0.13 0.16 0.16 0.16 0.17 0.26 0.26 0.24 0.23 0.2 
      income before income taxes
            21,314,000 31,041,000 -6,951,000 11,410,000 17,556,000 20,058,000 993,000 8,250,000 15,781,000 1,687,000 12,121,000 15,063,000 32,952,000 34,860,000 37,132,000 30,412,000 26,782,000 25,871,000 23,716,000 23,617,000 11,892,000 35,007,000 32,982,000 33,316,000 -1,395,000 34,678,000 32,930,000 33,078,000 32,279,000 30,529,000 30,571,000 29,683,000 29,604,000 11,712,000 26,741,000 26,257,000 25,054,000 21,619,000 -35,083,000 22,043,000 23,129,000 6,481,000 21,193,000 19,858,000 18,957,000 19,625,000 18,573,000 18,283,000 13,782,000 15,567,000 15,189,000 14,717,000 12,339,000 14,437,000 13,424,000 14,181,000 12,077,000 10,676,000 13,374,000 12,707,000 12,578,000 11,842,000 8,978,000 11,305,000 11,150,000 11,877,000 11,868,000 12,234,000 12,115,000 11,266,000 10,419,000 6,005,657 
      other comprehensive income:
                                                                                    
      unrealized loss on available-for-sale marketable securities, net of taxes
             -325 -1,647   -2,376.75 -2,293  -5,269    -1,271                                                            
      other comprehensive gain:
                                                                                    
      other comprehensive loss:
                                                                                    
      other income, net:
                                                                                    
      investment and interest
                                 -4,150,000 2,027,000 1,320,000 476,000 1,553,000 1,439,000 1,515,000 1,569,000 86,000 1,359,000 1,002,000 187,000 1,297,000 -1,334,000 242,000 507,000 494,000 -50,000 803,000 381,000 1,264,000 1,184,000 219,000 1,034,000 400,000 962,000 -95,000 1,653,000 1,189,000 -1,355,000 463,000 714,000 1,073,000 1,182,000 -383,000 750,000 821,000 1,709,000 1,157,000 937,000 596,000 -157,000 585,000  586,000 1,128,000 1,047,000     
      unrealized gain on available for sale marketable securities, net of taxes
                                        479 -765,862 -369,000 578,000 555,000 337,000 198,000 -20,000 3,000 750 -4,000 6,000 1,000 6,000 -1,000  23,000 -44,000 18,000 -17,000 -173,000                        
      selling, general and administrative
                                             36,357,000 23,445,000 25,124,000 26,763,000 24,149,000 39,375,000 22,240,000 22,046,000 29,269,000 22,576,000 19,363,000 20,790,000 18,982,000 20,789,000 18,524,000 20,982,000 18,671,000 14,344,000 15,511,000 16,780,000 15,771,000 14,488,000 13,150,000 13,901,000 13,941,000 11,936,000 13,516,000 10,876,000 9,205,000 9,615,000 10,124,000 10,579,000 9,803,000 9,865,000 10,105,000 10,511,000 11,415,000 8,767,000 7,966,903 
      income taxes
                                                   8,122,000 8,490,000 1,029,000 7,403,000 6,925,000 4,003,000 6,827,000 7,056,000 6,963,000 5,204,000 5,002,000 5,193,000 4,889,000 4,572,000 5,314,000 4,255,000 5,460,000 4,649,000 4,110,000 5,149,000 4,892,000 4,842,000 4,559,000 3,456,000 4,352,000 4,293,000 4,573,000 4,569,000 4,710,000 4,665,000 4,371,000 3,855,000 2,282,000 
      unrealized loss on available for sale marketable securities, net of taxes
                                                       -106,000                             
      cash dividends per common share
                                                        0.17 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.16 -0.06 0.23 0.22 0.21 0.2 0.19 0.18 0.17 0.16 0.15 0.14 0.13 0.12 0.11 0.15 0.14 0.13 0.12 0.07 
      comprehensive income
                                                           11,303,000 8,405,000                        
      weighted-average number of common shares outstanding
                                                                                    
      basic
    69,860 72,380 72,237 73,161 73,670 73,754 73,687 73,853 73,926 74,288 74,364 74,478 74,497 74,336 74,340 74,337 74,326 74,816 74,943 75,005 75,003 74,696 74,700 74,695 74,658 74,362 74,387 74,352 74,301 74,002 74,019 73,982 73,913 73,355 73,461 73,276 73,074 72,754 72,839,000 72,568,000 72,364,000 71,826,000 72,009,000 71,657,000 71,469,000 70,616,000 70,671,000 70,440,000 70,321,000 69,206,000 69,706,000 68,599,000 68,463,000 67,511,000 67,651,000 67,296,000 67,084,000 66,637,000 66,710,000 66,517,000 66,401,000 65,917,000 44,026,000 43,965,000                 
      diluted
    71,049 73,032 72,966 73,161 73,961 73,988 73,926 73,853 74,055 74,340 74,364 74,567 74,518 74,351 74,348 74,358 74,333 74,962 75,076 75,212 75,224 74,785 74,777 74,761 74,767 74,590 74,507 74,619 74,719 74,612 74,579 74,487 74,725 74,348 74,538 74,269 73,946 73,474 73,592,000 73,316,000 73,014,000 72,512,000 72,691,000 72,286,000 72,159,000 71,341,000 70,671,000 71,206,000 71,072,000 70,045,000 70,531,000 69,370,000 69,361,000 68,485,000 68,635,000 68,228,000 68,085,000 67,585,000 67,530,000 67,545,000 67,454,000 67,008,000 44,719,000 44,652,000                 
      basic weighted-average number of common shares outstanding
                                                                    43,899,000 43,584,000 43,626,000 43,537,000 43,457,000 43,131,000 43,143,000 43,080,000 43,016,000 42,286,000 42,606,000 28,087,000 27,771,000 27,451,000 27,460,000 17,393,200 
      diluted weighted-average number of common shares outstanding
                                                                    44,659,000 44,286,000 44,334,000 44,262,000 44,073,000 44,025,000 43,980,000 43,962,000 44,213,000 43,847,000 43,969,000 29,140,000 29,108,000 28,765,000 28,760,000 18,346,738 
      other income :
                                                                                    
      investment and interest income
                                                                            324,000    1,261,000 904,250 1,298,000 292,346 
    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 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 2004-09-30 
                                                                                      
        assets:
                                                                                      
        current assets:
                                                                                      
        cash and cash equivalents
      136,172,000 125,189,000 124,388,000 82,818,000 64,317,000 56,776,000 27,055,000 26,430,000 29,288,000 54,330,000 31,313,000 28,662,000 16,153,000 26,279,000 19,633,000 31,681,000 32,899,000 70,794,000 79,582,000 124,587,000 123,654,000 139,330,000 109,920,000 78,109,000 64,498,000 27,329,000 40,572,000 16,156,000 28,362,000 26,025,000 15,197,000 13,155,000 10,489,000 9,557,000 11,005,000 7,058,000 48,230,000 23,853,000 24,327,000 21,719,000 29,120,000 33,189,000 44,369,000 85,900,000 58,292,000 75,280,000 52,876,000 57,269,000 71,692,000 64,155,000 50,559,000 63,160,000 54,727,000 68,949,000 53,176,000 55,599,000 48,256,000 38,639,000 27,128,000 35,498,000 36,692,000 39,692,000 26,109,000 34,968,000 28,648,000 31,301,000 37,437,000 24,539,000 44,476,000 37,501,000 93,572,000 90,747,000 96,957,000 92,461,000 86,045,000 73,450,000 78,999,000 72,997,000 76,399,000 71,190,394 
        restricted cash equivalents
      97,000 5,577,000 32,000 326,000 65,000 3,355,000 1,084,000 3,117,000 24,695,000                                                                        
        marketable securities, at fair value
      42,442,000 42,774,000 53,073,000 51,674,000 50,496,000 50,535,000 76,776,000 79,134,000 75,618,000 93,131,000 90,004,000 93,185,000 95,985,000 95,200,000 93,748,000 97,488,000 107,171,000 114,396,000 125,583,000 125,843,000 125,773,000 125,012,000 94,042,000 92,318,000 90,497,000 90,711,000 79,714,000 79,533,000 78,508,000 76,362,000 74,704,000 74,928,000 74,372,000 73,221,000 70,384,000 70,082,000 68,260,000 67,730,000 80,623,000 78,919,000 72,358,000 69,496,000 59,199,000 11,799,000 11,855,000 11,799,000 11,875,000 11,104,000 11,647,000 11,445,000 11,562,000 22,026,000 22,559,000 21,322,000 21,354,000 21,398,000 21,350,000 31,337,000 41,174,000 40,782,000 41,199,000 43,437,000 44,498,000 44,099,000 43,901,000 52,648,000 51,594,000 52,651,000 51,946,000 49,414,000           
        restricted marketable securities, at fair value
      35,898,000 30,352,000 30,013,000 29,258,000 29,051,000 25,105,000 25,085,000 22,022,000                                                                         
        accounts receivable
      299,443,000 281,303,000 288,521,000 292,210,000                                                                             
        notes receivable — short–term portion
      29,068,000 31,243,000 25,406,000 31,628,000                                                                             
        inventories and supplies
      15,891,000 16,797,000 17,202,000 17,356,000 17,273,000 16,749,000 17,046,000 17,857,000 18,042,000 18,479,000 19,188,000 19,976,000 20,229,000 21,164,000 22,712,000 23,535,000 24,820,000 26,015,000 26,714,000 28,008,000 29,170,000 31,586,000 32,692,000 33,677,000 36,938,000 36,517,000 38,888,000 39,977,000 40,982,000 41,443,000 41,595,000 41,424,000 42,274,000 42,393,000 41,516,000 40,621,000 37,294,000 37,800,000 37,603,000 37,603,000 37,927,000 36,308,000 35,887,000 35,393,000 35,418,000 35,462,000 32,809,000 32,919,000 32,756,000 32,447,000 30,579,000 28,648,000 28,596,000 28,675,000 27,409,000 27,050,000 25,966,000 25,144,000 22,195,000 21,416,000 20,844,000 20,614,000 18,858,000 18,347,000 17,456,000 16,974,000 16,804,000 16,544,000 15,411,000 16,079,000 15,998,000 15,406,000 15,065,000 15,117,000 14,575,000 13,523,000 13,162,000 12,640,000 12,421,000 10,766,645 
        taxes receivable
      14,227,000  15,562,000        1,168,000 926,000 1,748,000 6,629,000 5,430,000 3,775,000 5,049,000 8,813,000                                                               
        prepaid expenses and other current assets
      27,992,000 20,934,000 26,436,000 27,024,000                                                                             
        total current assets
      601,230,000 576,415,000 580,633,000 532,294,000 574,968,000 556,652,000 578,118,000 573,212,000 580,414,000 571,696,000 533,363,000 549,086,000 510,087,000 508,632,000 512,693,000 521,852,000 524,827,000 546,382,000 566,064,000 590,492,000 572,190,000 572,403,000 537,519,000 523,541,000 520,556,000 515,732,000 531,912,000 509,003,000 525,006,000 508,136,000 508,178,000 500,797,000 489,153,000 527,406,000 515,542,000 476,183,000 451,721,000 414,624,000 424,468,000 410,301,000 391,505,000 365,946,000 361,976,000 352,252,000 330,251,000 334,828,000 312,483,000 320,030,000 324,053,000 309,192,000 287,655,000 289,301,000 266,520,000 267,846,000 249,095,000 250,324,000 232,516,000 232,121,000 215,732,000 221,050,000 216,624,000 221,775,000 203,320,000 210,035,000 201,361,000 212,170,000 217,633,000 205,431,000 215,319,000 206,615,000 209,991,000 199,406,000 203,928,000 195,098,000 197,651,000 181,713,000 178,248,000 168,237,000 170,938,000  
        property and equipment
      27,032,000 27,586,000 26,927,000 28,215,000 29,307,000 28,198,000 28,435,000 29,840,000 29,190,000 28,774,000 29,145,000 26,932,000 23,400,000 22,975,000 24,244,000 25,632,000 26,702,000 28,102,000 27,817,000 26,922,000 27,722,000 26,561,000 27,807,000 28,558,000 29,010,000 28,820,000 28,975,000 29,603,000 30,077,000 12,900,000 13,067,000 13,254,000 13,487,000 13,509,000 13,499,000 13,399,000 13,397,000 13,455,000 13,275,000 13,485,000 13,275,000 13,086,000 13,251,000                                      
        goodwill
      79,797,000 79,797,000 80,059,000 80,042,000 80,042,000 75,529,000 75,529,000 75,529,000 75,529,000 75,529,000 75,529,000 75,529,000 75,529,000 75,529,000 75,529,000 75,529,000 75,529,000 74,755,000 65,545,000 61,659,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 51,084,000 50,473,000 44,438,000 44,438,000 44,438,000 44,438,000 44,438,000 44,438,000 44,438,000 44,438,000 44,438,000 44,438,000 44,438,000 44,438,000 40,183,000 40,183,000 40,183,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000 16,955,000   17,054,000 17,054,000 15,020,000            
        other intangible assets
      6,315,000 6,964,000 7,614,000 8,263,000                                                                             
        notes receivable — long–term portion
      20,628,000 25,209,000 28,351,000 45,084,000                                                                             
        deferred compensation funding, at fair value
      52,995,000 55,909,000 55,391,000 51,548,000 46,832,000 49,639,000 48,647,000 46,043,000 44,269,000 40,812,000 36,408,000 37,020,000 34,312,000 33,493,000 31,627,000 32,320,000 39,012,000 46,691,000 50,711,000 50,434,000 46,981,000 46,825,000 40,969,000 37,217,000 30,008,000 37,247,000 34,385,000 34,065,000 31,812,000 29,113,000 32,946,000 30,697,000 29,443,000 28,885,000 27,387,000 26,326,000 25,082,000 24,119,000 26,332,000 26,362,000 25,659,000 25,391,000 23,905,000 24,985,000 24,291,000 24,742,000 24,204,000 24,003,000 22,998,000 22,200,000 21,239,000 19,757,000 19,254,000 17,831,000 17,113,000 15,795,000 15,541,000 13,780,000 12,387,000 13,462,000 12,948,000 12,080,000 12,510,000 11,238,000 11,553,000  10,241,000 9,157,000 8,254,000            
        deferred tax assets
      17,967,000 18,472,000 21,809,000 53,118,000 39,509,000 38,170,000 36,486,000 38,917,000 35,434,000 35,226,000 32,888,000                                                                      
        other long-term assets
      8,881,000 3,901,000 3,515,000 3,636,000 6,090,000 4,088,000 5,605,000 4,505,000 4,301,000 1,656,000 1,814,000 708,000 760,000 812,000                                                                   
        total assets
      814,845,000 794,253,000 804,299,000 802,200,000 822,963,000 802,772,000 805,841,000 799,702,000 803,880,000 790,652,000 750,716,000 761,758,000 719,133,000 718,334,000 722,164,000 740,058,000 746,516,000 777,529,000 793,603,000 817,994,000 782,809,000 785,031,000 754,331,000 736,688,000 732,077,000 722,592,000 726,359,000 710,131,000 722,924,000 692,603,000 687,972,000 670,878,000 660,807,000 676,003,000 661,542,000 615,746,000 565,108,000 528,446,000 536,823,000 522,549,000 503,095,000 480,949,000 474,798,000 486,734,000 462,251,000 469,579,000 442,206,000 441,217,000 441,139,000 425,342,000 400,214,000 355,410,000 332,376,000 331,183,000 312,836,000 312,424,000 294,962,000 289,695,000 273,315,000 278,889,000 274,311,000 277,934,000 262,272,000 266,554,000 256,737,000 265,892,000 271,687,000 259,112,000 259,695,000 248,561,000 254,590,000 245,677,000 251,708,000 243,368,000 246,523,000 231,757,000 226,731,000 215,556,000 214,164,000  
        liabilities and stockholders’ equity:
                                                                                      
        current liabilities:
                                                                                      
        accounts payable
      83,124,000 77,382,000 81,715,000 77,898,000 78,774,000 81,147,000 76,636,000 72,220,000 72,916,000 83,224,000 70,585,000 65,622,000 64,351,000 68,296,000 67,474,000 66,466,000 64,037,000 64,419,000 50,493,000 51,341,000 47,754,000 52,239,000 53,940,000 59,369,000 60,794,000 54,418,000 59,355,000 59,289,000 60,254,000 61,467,000 75,541,000 69,269,000 70,624,000 74,463,000 62,323,000 69,204,000 47,952,000 42,912,000 39,529,000 44,863,000 39,773,000 41,472,000 37,982,000 35,635,000 42,644,000 43,554,000 48,353,000 47,278,000 47,985,000 43,682,000 36,647,000 31,238,000 30,641,000 22,810,000 25,677,000 20,860,000 21,962,000 10,650,000 10,025,000 9,680,000 12,029,000 11,434,000 7,636,000 7,743,000 8,074,000 9,134,000 8,377,000 9,385,000 9,572,000 9,301,000 7,792,000 8,418,000 8,776,000 8,902,000 9,479,000 7,741,000 7,474,000 10,139,000 10,304,000 5,355,972 
        accrued payroll and related taxes
      50,043,000 31,400,000 50,428,000 66,227,000 45,971,000 51,579,000 42,333,000 57,014,000 38,338,000 56,142,000 24,184,000 39,223,000 20,394,000 42,704,000 45,853,000 61,572,000 42,160,000 68,664,000 42,354,000 58,348,000 37,691,000 70,614,000 16,443,000                                                          
        other accrued expenses and current liabilities
      37,718,000 37,222,000 37,534,000 41,772,000 36,588,000 24,783,000 25,564,000 22,987,000 21,931,000 21,179,000 20,209,000 17,129,000                                                                     
        accrued insurance claims
      22,481,000 24,371,000 23,763,000 24,578,000 25,931,000 25,148,000 21,510,000 21,593,000 23,138,000 22,681,000 25,160,000 24,891,000 23,974,000 23,166,000 26,242,000 26,378,000 25,316,000 24,310,000 24,164,000 23,368,000 22,702,000 21,610,000 25,776,000 24,806,000 23,729,000 23,256,000 23,082,000 22,385,000 21,719,000 20,696,000 24,167,000 23,702,000 22,917,000 22,245,000 24,827,000 23,975,000 23,857,000 23,573,000 23,907,000 22,541,000 21,475,000 19,740,000 19,115,000 17,908,000 18,523,000 17,748,000 13,699,000 8,075,000 7,861,000 7,853,000 7,372,000 7,110,000 6,774,000 6,850,000 6,751,000 6,341,000 5,776,000 5,296,000 5,863,000 5,878,000 5,634,000 5,076,000 6,032,000 5,305,000 5,161,000 4,844,000 4,802,000 4,385,000 4,183,000 3,943,000 4,306,000 4,111,000 3,880,000 4,302,000 4,456,000 4,904,000 4,623,000 4,647,000 4,809,000 3,982,139 
        total current liabilities
      193,366,000 170,375,000 195,644,000 213,932,000 198,749,000 192,547,000 197,204,000 209,483,000 209,375,000 216,928,000 187,774,000 189,664,000 162,164,000 178,619,000 181,822,000 183,929,000 174,304,000 191,125,000 153,854,000 176,623,000 146,907,000 162,260,000 134,296,000 169,495,000 186,284,000 148,651,000 160,009,000 151,391,000 175,482,000 163,391,000 166,372,000 164,394,000 171,643,000 184,168,000 175,382,000 146,935,000 117,664,000 100,871,000 115,669,000 108,863,000 102,596,000 96,065,000 92,843,000 113,895,000 99,969,000 117,959,000 105,243,000 96,140,000 105,794,000 99,103,000 72,474,000 75,268,000 56,968,000 67,664,000 54,980,000 59,438,000 46,135,000 45,387,000 29,752,000 37,204,000 34,453,000 40,531,000 24,218,000 32,542,000 22,962,000 34,717,000 40,625,000 30,860,000 38,319,000 29,042,000 35,182,000 26,323,000 31,753,000 27,881,000 32,908,000 22,947,000 30,054,000 27,610,000 32,470,000  
        accrued insurance claims — long-term
      43,822,000 46,142,000 49,138,000 50,833,000 53,259,000 51,869,000 61,520,000 61,209,000 62,796,000 61,697,000 69,755,000 68,920,000 67,100,000 65,541,000 69,707,000 69,233,000 67,134,000 65,084,000                                                               
        deferred compensation liability — long-term
      52,934,000 56,276,000 55,648,000 51,699,000 46,766,000 50,011,000 48,915,000 46,201,000 44,271,000 41,186,000 36,686,000 37,171,000 34,263,000 33,764,000 31,807,000 32,789,000 39,157,000 46,888,000                                                               
        lease liability — long-term
      9,363,000 9,659,000 6,217,000 7,048,000 7,948,000 8,033,000 9,029,000 10,662,000 10,590,000 11,235,000 11,645,000 11,560,000 8,586,000 8,097,000 8,748,000 9,856,000 10,588,000 11,299,000                                                               
        other long-term liabilities
      1,594,000 1,591,000 1,650,000 1,650,000 2,043,000 385,000 425,000 724,000 2,267,000 2,990,000 3,123,000 3,854,000 6,448,000 6,141,000 8,004,000 6,406,000 8,696,000 10,456,000 10,562,000 5,703,000                                                             
        commitments and contingencies
                                                                                      
        stockholders’ equity:
                                                                                      
        common stock, 0.01 par value...
      773,000 768,000 768,000 768,000 768,000 765,000 765,000 765,000 765,000 763,000 763,000 763,000 763,000 762,000 762,000 762,000 762,000 760,000 760,000 760,000 760,000 758,000 757,000 757,000 757,000 756,000 755,000 755,000                                                     
        additional paid-in capital
      328,745,000 327,956,000 325,726,000 323,189,000 320,731,000 318,363,000 316,334,000 314,146,000 312,080,000 310,436,000 308,151,000 305,853,000 303,582,000 302,304,000 300,241,000 298,405,000 296,304,000 294,124,000 291,899,000 289,138,000 286,522,000 282,206,000 279,408,000 277,482,000 275,447,000 270,614,000 269,598,000 267,853,000 264,936,000 259,440,000 256,129,000 255,894,000 253,692,000 244,363,000 241,008,000 236,275,000 226,075,000 217,664,000 215,531,000 213,233,000 209,450,000 199,294,000 196,333,000 194,416,000 192,068,000 186,022,000 182,031,000 180,441,000 174,074,000 168,329,000 165,575,000 122,148,000 120,104,000 113,495,000 111,318,000 111,795,000 109,849,000 105,727,000 104,924,000 103,257,000 102,416,000 100,138,000 97,474,000 95,749,000 94,960,000 92,339,000    84,421,000    75,064,000    58,809,000   
        retained earnings
      309,731,000 283,668,000 252,424,000 209,471,000 241,836,000 224,556,000 212,631,000 198,595,000 200,381,000 185,010,000 170,301,000 175,794,000 167,190,000 154,495,000 154,501,000 170,267,000 179,427,000 183,957,000 197,550,000 203,793,000 210,020,000 200,893,000 188,578,000 176,268,000 168,404,000 195,455,000 191,515,000 188,025,000 184,592,000 190,092,000 173,033,000 161,269,000 149,743,000 163,860,000 157,678,000 148,134,000 139,333,000 130,940,000 124,134,000 117,821,000 112,354,000 106,886,000 110,789,000 106,626,000 103,098,000 100,237,000 97,244,000 131,761,000 130,026,000 127,464,000 133,959,000 131,998,000 130,581,000 127,042,000 125,471,000 125,017,000 124,652,000 126,921,000 127,090,000 127,686,000 128,358,000 130,993,000 132,130,000 133,085,000 134,040,000 135,837,000 138,011,000 138,078,000 138,089,000 137,741,000 137,364,000 138,317,000 137,388,000 136,110,000 133,931,000 131,170,000 127,831,000 124,268,000 121,818,000 98,555,661 
        accumulated other comprehensive loss, net of taxes
      -835,000 -448,000 -729,000 -1,442,000 -1,814,000 -2,317,000 -524,000 -2,617,000 -2,172,000 -1,844,000 -4,777,000 -3,130,000 -2,270,000                                                 -78,000   -60,000                
        common stock in treasury, at cost, 8,339 and 7,225 shares
      -124,648,000                                                                                
        total stockholders’ equity
      513,766,000 510,210,000 496,002,000 477,038,000 514,198,000 499,927,000 488,748,000 471,423,000 474,581,000 456,616,000 441,733,000 450,589,000 440,572,000 426,172,000 422,076,000 437,845,000 446,637,000 452,677,000 480,205,000 488,304,000 493,102,000 480,461,000 464,750,000 449,687,000 438,179,000 460,305,000 455,299,000 449,648,000 442,549,000 440,780,000 419,580,000 408,134,000 394,344,000 399,952,000 390,456,000 376,077,000 356,477,000 338,842,000 331,104,000 322,734,000 312,955,000 296,456,000 297,118,000 290,879,000 285,072,000 275,830,000 268,877,000 301,847,000 293,791,000 285,143,000 288,871,000 243,520,000 240,208,000 229,570,000 224,517,000 222,057,000 219,625,000 217,726,000 217,096,000 214,242,000 213,617,000 213,079,000 211,143,000 210,156,000 210,053,000 208,774,000 209,372,000 208,700,000 203,281,000 201,682,000 199,772,000 199,835,000 201,142,000 194,718,000 191,989,000 186,801,000 173,394,000 165,477,000 161,870,000  
        total liabilities and stockholders’ equity
      814,845,000 794,253,000 804,299,000 802,200,000 822,963,000 802,772,000 805,841,000 799,702,000 803,880,000 790,652,000 750,716,000 761,758,000 719,133,000 718,334,000 722,164,000 740,058,000 746,516,000 777,529,000 793,603,000 817,994,000 782,809,000 785,031,000 754,331,000 736,688,000 732,077,000 722,592,000 726,359,000 710,131,000 722,924,000 692,603,000 687,972,000 670,878,000 660,807,000 676,003,000 661,542,000 615,746,000 565,108,000 528,446,000 536,823,000 522,549,000 503,095,000 480,949,000 474,798,000 486,734,000 462,251,000 469,579,000 442,206,000 441,217,000 441,139,000 425,342,000 400,214,000 355,410,000 332,376,000 331,183,000 312,836,000 312,424,000 294,962,000 289,695,000 273,315,000 278,889,000 274,311,000 277,934,000 262,272,000 266,554,000 256,737,000 265,892,000 271,687,000   248,561,000   251,708,000 243,368,000    215,556,000   
        income taxes receivable
       22,246,000                                                                               
        income taxes payable
         1,388,000 9,604,000 8,391,000 4,500,000 4,279,000 11,759,000 7,201,000 1,267,000 1,364,000        2,595,000 7,908,000  25,495,000 20,922,000 10,555,000 8,075,000 3,066,000  1,410,000 7,140,000   939,000 15,378,000 10,781,000 12,471,000 8,403,000 7,686,000 9,332,000 9,203,000  3,212,000  11,601,000 6,179,000  656,000 5,381,000  1,878,000 6,270,000 4,479,000  1,906,000 3,196,000 3,335,000 2,655,000   187,000 680,000  215,000 444,000 724,000 35,000 329,000  2,093,000  1,109,000 1,307,000  1,726,000   192,000 274,000 276,000  
        common stock in treasury, at cost; 7,225 and 3,330 shares
       -101,734,000                                                                               
        deferred compensation liability — short-term
        2,204,000 2,069,000 1,881,000 1,499,000 1,661,000 1,390,000 1,293,000 1,501,000 1,369,000 1,435,000 1,357,000 1,618,000 1,220,000 4,694,000 6,294,000 6,991,000                                                               
        common stock in treasury, at cost, 6,150 and 3,330 shares
        -82,187,000                                                                              
        common stock in treasury, at cost, 4,409 and 3,330 shares
         -54,948,000                                                                             
        accounts receivables
          337,896,000 330,907,000                                                                           
        notes receivable — short–term portion, less allowance for doubtful accounts of 10,188 and 10,372 as of march 31, 2025 and december 31, 2024, respectively
          49,121,000                                                                            
        prepaid expenses and other assets
          26,749,000 21,796,000 24,577,000 25,768,000 25,631,000 22,247,000 23,883,000 26,276,000 25,188,000 22,583,000 23,676,000 33,839,000 35,793,000 32,976,000 44,460,000 40,973,000 40,815,000 21,001,000 23,834,000 24,176,000 24,819,000 20,245,000 23,084,000 26,572,000 24,048,000 22,468,000 23,198,000 27,625,000 27,004,000 23,515,000 25,628,000 20,054,000 16,824,000 13,965,000                                           
        other intangible assets, less accumulated amortization of 39,927 and 39,242 as of march 31, 2025 and december 31, 2024, respectively
          10,018,000                                                                            
        notes receivable — long–term portion, less allowance for doubtful accounts of 2,551 and 2,890 as of march 31, 2025 and december 31, 2024, respectively
          36,197,000                                                                            
        common stock in treasury, at cost, 3,890 and 3,330 shares as of march 31, 2025 and december 31, 2024, respectively
          -47,323,000                                                                            
        notes receivable — short–term portion, less allowance for doubtful accounts of 10,372 and 6,433 as of december 31, 2024 and 2023, respectively
           51,429,000                                                                           
        other intangible assets, less accumulated amortization of 39,242 and 36,557 as of december 31, 2024 and 2023, respectively
           9,442,000                                                                           
        notes receivable — long–term portion, less allowance for doubtful accounts of 2,890 and 4,449 as of december 31, 2024 and 2023, respectively
           41,054,000                                                                           
        borrowings under line of credit
            25,000,000 30,000,000 40,000,000 25,000,000 45,000,000 40,000,000 35,000,000 25,000,000 25,000,000 10,000,000 10,000,000        50,000,000 10,000,000 10,000,000 30,000,000 30,000,000 30,000,000 9,959,000 40,505,000 26,000,000 35,382,000 25,000,000 16,182,000                                             
        common stock in treasury, at cost, 3,330 and 2,988 shares as of december 31, 2024 and 2023, respectively
           -41,440,000                                                                           
        accounts and notes receivable
            406,495,000 398,884,000 407,140,000 383,509,000 367,807,000 380,061,000 350,784,000 336,777,000 347,494,000 331,534,000 319,095,000 293,388,000 289,725,000 271,081,000 252,778,000 255,474,000 277,031,000 295,261,000 303,804,000 340,930,000 349,654,000 346,765,000 353,106,000 341,838,000 353,484,000 343,665,000 335,014,000 378,720,000 367,009,000 338,368,000 281,113,000 271,276,000 265,533,000 255,776,000 236,412,000 214,854,000 209,626,000 205,048,000 211,412,000 198,128,000 199,988,000 205,172,000 195,146,000 189,107,000 184,637,000 165,700,000 149,146,000 140,218,000 137,369,000 135,795,000 128,123,000 130,744,000 117,292,000 117,204,000 111,364,000 108,426,000 108,363,000 107,253,000 105,065,000 104,356,000 104,721,000 105,689,000 98,213,000 96,558,000 94,689,000 87,548,000 84,556,000 82,951,000 90,335,000 84,323,000 80,691,000 78,086,000   
        other intangible assets, less accumulated amortization of 38,571 and 36,557 as of september 30, 2024 and december 31, 2023, respectively
            10,113,000                                                                          
        notes receivable — long–term portion, less allowance for doubtful accounts of 2,013 and 4,449 as of september 30, 2024 and december 31, 2023, respectively
            22,908,000                                                                          
        common stock in treasury, at cost, 3,242 and 2,988 shares as of september 30, 2024 and december 31, 2023, respectively
            -40,458,000                                                                          
        other intangible assets, less accumulated amortization of 37,899 and 36,557 as of june 30, 2024 and december 31, 2023, respectively
             10,785,000                                                                         
        notes receivable — long–term portion, less allowance for doubtful accounts of 3,152 and 4,449 as of june 30, 2024 and december 31, 2023, respectively
             20,871,000                                                                         
        common stock in treasury, at cost, 3,150 and 2,988 shares as of june 30, 2024 and december 31, 2023, respectively
             -39,466,000                                                                         
        other intangible assets, less accumulated amortization of 37,228 and 36,557 as of march 31, 2024 and december 31, 2023, respectively
              11,456,000                                                                        
        notes receivable — long–term portion, less allowance for doubtful accounts of 3,720 and 4,449 as of march 31, 2024 and december 31, 2023, respectively
              23,287,000                                                                        
        common stock in treasury, at cost, 2,887 and 2,988 shares as of march 31, 2024 and december 31, 2023, respectively
              -36,473,000                                                                        
        other intangible assets, less accumulated amortization of 36,557 and 32,738 as of december 31, 2023 and 2022, respectively
               12,127,000                                                                       
        notes receivable — long–term portion, less allowance for doubtful accounts of 4,449 and 3,273 as of december 31, 2023 and 2022, respectively
               24,832,000                                                                       
        common stock in treasury, at cost, 2,988 and 2,240 shares as of december 31, 2023 and 2022, respectively
               -37,749,000                                                                       
        other intangible assets, less accumulated amortization of 35,885 and 32,738 as of september 30, 2023 and december 31, 2022, respectively
                12,799,000                                                                      
        notes receivable — long–term portion, less allowance for doubtful accounts of 5,151 and 3,273 as of september 30, 2023 and december 31, 2022, respectively
                28,770,000                                                                      
        common stock in treasury, at cost, 2,480 and 2,073 shares as of september 30, 2023 and december 31, 2022, respectively
                -32,705,000                                                                      
        other intangible assets, less accumulated amortization of 35,145 and 32,738 as of june 30, 2023 and december 31, 2022, respectively
                 13,539,000                                                                     
        notes receivable — long–term portion, less allowance for doubtful accounts of 3,917 and 3,273 as of june 30, 2023 and december 31, 2022, respectively
                 30,740,000                                                                     
        deferred tax asset
                 28,204,000 27,975,000 28,338,000 34,063,000 33,453,000 32,936,000 31,535,000                                                               
        common stock in treasury, at cost, 2,134 and 2,073 shares as of june 30, 2023 and december 31, 2022, respectively
                 -28,691,000                                                                     
        other intangible assets, less accumulated amortization of 33,941 and 32,738 as of march 31, 2023 and december 31, 2022, respectively
                  14,743,000                                                                    
        notes receivable — long–term portion, less allowance for doubtful accounts of 3,837 and 3,273 as of march 31, 2023 and december 31, 2022, respectively
                  32,327,000                                                                    
        other accrued expenses
                  17,088,000 17,835,000 16,033,000 14,819,000 26,497,000 26,741,000 36,843,000 40,971,000 30,852,000 17,797,000 12,642,000 13,904,000 11,443,000 16,489,000 10,413,000 9,500,000 10,740,000 8,890,000 4,088,000 3,495,000 3,123,000 4,561,000 3,665,000 3,319,000 3,118,000 3,075,000 2,767,000 2,627,000 2,889,000 3,115,000 6,742,000 7,232,000 7,253,000 8,961,000 18,135,000 2,609,000 3,283,000 8,528,000 3,168,000 3,081,000 2,804,000 3,526,000 2,256,000 2,128,000 1,496,000 1,657,000 1,643,000 1,422,000 1,487,000 1,988,000 1,841,000 2,859,000 2,629,000 3,057,000 1,433,000 1,280,000 769,000 679,000 1,165,000 535,000 900,000 1,338,000 1,580,000 1,360,000 2,171,000 2,425,000 1,799,000 2,868,643 
        common stock in treasury, at cost, 2,135 and 2,073 shares as of march 31, 2023 and december 31, 2022, respectively
                  -28,693,000                                                                    
        other intangible assets, less accumulated amortization of 32,738 and 27,879 as of december 31, 2022 and 2021, respectively
                   15,946,000                                                                   
        notes receivable — long–term portion, less allowance for doubtful accounts of 3,273 and 6,312 as of december 31, 2022 and 2021, respectively
                   32,609,000                                                                   
        accumulated other comprehensive income, net of taxes
                   -3,477,000 -5,507,000 -3,214,000 -1,269,000 4,000,000 3,981,000 4,995,000 4,292,000 5,563,000 4,915,000 4,042,000 2,386,000 2,919,000 2,822,000 2,365,000 1,574,000 158,000 -712,000 -204,000 -301,000 837,000 844,000 762,000 160,000 -319,000 1,308,000 1,676,000 1,098,000 543,000 206,000 8,000 28,000 25,000 52,000 56,000 50,000 49,000 43,000 44,000 150,000 127,000 171,000 153,000 170,000 343,000 373,000 297,000 12,000  152,000 31,000                 
        common stock in treasury, at cost, 2,073 and 2,240 shares as of december 31, 2022 and 2021, respectively
                   -27,912,000                                                                   
        other intangible assets, less accumulated amortization of 31,530 and 27,879 as of september 30, 2022 and december 31, 2021, respectively
                    17,154,000                                                                  
        notes receivable — long–term portion, less allowance for doubtful accounts of 2,376 and 6,312 as of september 30, 2022 and december 31, 2021, respectively
                    26,854,000                                                                  
        common stock in treasury, at cost, 2,072 and 2,240 shares as of september 30, 2022 and december 31, 2021, respectively
                    -27,921,000                                                                  
        other intangible assets, less accumulated amortization of 30,313 and 27,879 as of june 30, 2022 and december 31, 2021, respectively
                     18,371,000                                                                 
        notes receivable — long–term portion, less allowance for doubtful accounts of 5,222 and 6,312 as of june 30, 2022 and december 31, 2021, respectively
                     32,901,000                                                                 
        common stock in treasury, at cost, 2,106 and 2,240 shares as of june 30, 2022 and december 31, 2021, respectively
                     -28,375,000                                                                 
        other intangible assets, less accumulated amortization of 29,097 and 27,879 as of march 31, 2022 and december 31, 2021, respectively
                      19,587,000                                                                
        notes receivable – long–term portion, less allowance for doubtful accounts of 5,308 and 6,312 as of march 31, 2022 and december 31, 2021, respectively
                      27,923,000                                                                
        common stock in treasury, at cost, 2,122 and 2,240 shares as of march 31, 2022 and december 31, 2021, respectively
                      -28,587,000                                                                
        other intangible assets, less accumulated amortization of 27,879 and 23,466 as of december 31, 2021 and 2020, respectively
                       20,805,000                                                               
        notes receivable — long–term portion, less allowance for doubtful accounts of 6,312 and 7,895 as of december 31, 2021 and 2020, respectively
                       29,259,000                                                               
        accrued payroll and related taxes — noncurrent
                                                                                      
        common stock in treasury, at cost, 2,240 and 1,313 shares as of december 31, 2021 and 2020, respectively
                       -30,164,000                                                               
        other intangible assets, less accumulated amortization of 26,715 and 23,466 as of september 30, 2021 and december 31, 2020, respectively
                        17,039,000                                                              
        notes receivable — long–term portion, less allowance for doubtful accounts of 6,135 and 7,895 as of september 30, 2021 and december 31, 2020, respectively
                        30,651,000                                                              
        deferred income taxes
                        35,776,000 36,123,000 35,891,000 35,554,000 38,265,000 34,150,000 30,642,000 20,364,000 19,726,000 19,985,000 20,177,000 20,552,000 7,974,000 7,753,000 7,802,000 7,498,000 9,196,000 9,240,000 9,564,000 9,822,000 9,198,000 9,206,000 8,664,000 604,000  2,122,000 2,246,000 3,455,000 2,478,000   2,339,000 148,000 537,000 1,220,000 575,000 632,000 384,000 908,000 951,000 192,000 85,000 501,000  667,000 506,000 391,000 115,000 812,000 670,000 848,000  1,479,000 467,000 525,000 465,000 201,000 1,481,000 1,204,000 652,000 818,000 2,092,879 
        accrued insurance claims — long-term portion
                        63,135,000 62,005,000 60,348,000 60,818,000 70,296,000 68,212,000 65,272,000 64,366,000 64,696,000 62,815,000 60,680,000 58,904,000 68,782,000 67,459,000 65,225,000 62,454,000                                               
        deferred compensation liability
                        50,747,000 50,406,000 46,876,000 46,827,000 41,045,000 37,211,000 30,098,000 37,621,000 34,717,000 34,193,000 31,909,000 29,528,000 33,238,000 30,891,000 29,595,000 29,429,000 27,886,000 26,657,000 26,386,000 24,653,000 26,837,000 26,796,000 25,761,000 25,918,000 24,306,000 25,252,000 24,492,000 25,276,000 24,705,000 24,387,000 23,211,000 22,771,000 21,668,000 20,033,000 19,393,000 18,237,000 17,586,000 16,132,000 15,724,000 14,224,000 12,786,000 13,728,000 13,094,000 12,479,000 12,837,000 11,479,000 11,680,000 11,099,000 10,484,000 9,319,000 8,334,000 8,636,000 9,589,000 9,926,000 9,759,000 10,732,000 11,227,000 10,567,000 12,497,000 11,626,000 8,604,000 4,530,485 
        accrued payroll and related taxes - noncurrent
                        23,302,000 23,302,000 23,302,000 23,302,000 32,304,000                                                          
        lease liability — long-term portion
                        11,798,000 11,651,000 12,274,000 11,363,000 11,640,000 12,083,000 12,244,000 11,649,000 11,638,000                                                      
        common stock in treasury, at cost, 1,432 and 1,313 shares as of september 30, 2021 and december 31, 2020, respectively
                        -13,985,000                                                              
        other intangible assets, less accumulated amortization of 25,573 and 23,466 as of june 30, 2021 and december 31, 2020, respectively
                         17,208,000                                                             
        notes receivable — long–term portion, less allowance for doubtful accounts of 6,875 and 7,895 as of june 30, 2021 and december 31, 2020, respectively
                         35,156,000                                                             
        common stock in treasury, at cost, 1,299 and 1,313 shares as of june 30, 2021 and december 31, 2020, respectively
                         -10,382,000                                                             
        other intangible assets, less accumulated amortization of 24,507 and 23,466 as of march 31, 2021 and december 31, 2020, respectively
                          17,146,000                                                            
        notes receivable — long–term portion, less allowance for doubtful accounts of 7,283 and 7,895 as of march 31, 2021 and december 31, 2020, respectively
                          31,795,000                                                            
        common stock in treasury, at cost, 1,237 and 1,313 shares as of march 31, 2021 and december 31, 2020, respectively
                          -8,492,000                                                            
        other intangible assets, less accumulated amortization of 23,466 and 19,300 as of december 31, 2020 and 2019, respectively
                           18,187,000                                                           
        notes receivable — long–term portion, less allowance for doubtful accounts of 7,895 and 6,667 as of december 31, 2020 and 2019, respectively
                           34,417,000                                                           
        common stock in treasury, at cost, 1,313 and 1,408 shares as of december 31, 2020 and 2019, respectively
                           -8,959,000                                                           
        other intangible assets, less accumulated amortization of 22,424 and 19,300 as of september 30, 2020 and december 31, 2019, respectively
                            19,229,000                                                          
        notes receivable — long–term portion, less allowance for doubtful accounts of 5,342 and 6,667 as of september 30, 2020 and december 31, 2019, respectively
                            39,458,000                                                          
        common stock in treasury, at cost, 1,311 and 1,408 shares as of september 30, 2020 and december 31, 2019, respectively
                            -8,908,000                                                          
        other intangible assets, less accumulated amortization of 21,383 and 19,300 as of june 30, 2020 and december 31, 2019, respectively
                             20,270,000                                                         
        notes receivable — long–term portion, less allowance for doubtful accounts of 9,104 and 6,667 as of june 30, 2020 and december 31, 2019, respectively
                             41,868,000                                                         
        accrued payroll, accrued and withheld payroll taxes
                             50,494,000 29,763,000 36,413,000 54,093,000 30,217,000 51,359,000 35,198,000 52,617,000 27,423,000 48,040,000 32,139,000 48,786,000 21,784,000 34,334,000 22,303,000 37,850,000 25,303,000 34,065,000 18,062,000 28,183,000 41,519,000 25,370,000 47,696,000 24,400,000 32,543,000 45,554,000 37,162,000 18,869,000 28,823,000 15,529,000 31,997,000 16,468,000 26,390,000 13,338,000 26,833,000 12,029,000 19,952,000 14,122,000 21,429,000 8,494,000 16,191,000 6,374,000 17,647,000 24,872,000 15,140,000 20,854,000 14,365,000 20,810,000 11,952,000 18,197,000 11,613,000 17,393,000 8,942,000 15,594,000 10,125,000 15,282,000 10,611,465 
        common stock in treasury, at cost, 1,311 and 1,408 shares as of june 30, 2020 and december 31, 2019, respectively
                             -8,862,000                                                         
        other intangible assets, less accumulated amortization of 20,342 and 19,300 as of march 31, 2020 and december 31, 2019, respectively
                              21,311,000                                                        
        notes receivable — long–term portion, less allowance for doubtful accounts of 4,827 and 6,667 as of march 31, 2020 and december 31, 2019, respectively
                              49,466,000                                                        
        common stock in treasury, at cost, 1,309 and 1,408 shares as of march 31, 2020 and december 31, 2019, respectively
                              -8,815,000                                                        
        other intangible assets, less accumulated amortization of 19,300 and 17,216 as of december 31, 2019 and 2018, respectively
                               22,353,000                                                       
        notes receivable – long–term portion, less allowance for doubtful accounts of 6,667 and 10,000 as of december 31, 2019 and 2018, respectively
                               46,992,000                                                       
        other noncurrent assets
                                   1,257,000 1,258,000 1,257,000 1,258,000 1,264,000 1,264,000 1,269,000 48,000 48,000 48,000 44,000 44,000 45,000 42,000 40,000 38,000 38,000 38,000 38,000 38,000 38,000 38,000 38,000 38,000 38,000 38,000 38,000 39,000 40,000 39,000 40,000 42,000 42,000 42,000 42,000 68,000 69,000 68,000 68,000 69,000 89,000 89,000 90,000 90,000 89,000 90,000 104,000 105,000 104,000 104,000 2,527,827 
        common stock in treasury, at cost, 1,408 shares and 1,467 shares as of december 31, 2019 and 2018, respectively
                               -9,439,000                                                       
        other intangible assets, less accumulated amortization of 20,340 and 17,216 as of september 30, 2019 and december 31, 2018, respectively
                                23,394,000                                                      
        notes receivable — long–term portion, less allowance for doubtful accounts of 10,000 as of september 30, 2019 and december 31, 2018
                                36,883,000                                                      
        common stock in treasury, at cost, 1,407 and 1,467 shares as of september 30, 2019 and december 31, 2018, respectively
                                -9,391,000                                                      
        other intangible assets, less accumulated amortization of 19,299 and 17,216 as of june 30, 2019 and december 31, 2018, respectively
                                 24,435,000                                                     
        notes receivable – long–term portion, less allowance for doubtful accounts of 10,000 as of june 30, 2019 and december 31, 2018
                                 41,956,000                                                     
        lease liability - long-term portion
                                 12,084,000 12,304,000                                                    
        common stock in treasury, at cost, 1,407 and 1,467 shares as of june 30, 2019 and december 31, 2018, respectively
                                 -9,350,000                                                     
        other intangible assets, less accumulated amortization of 18,257 and 17,216 as of march 31, 2019 and december 31, 2018, respectively
                                  25,477,000                                                    
        notes receivable – long–term portion, less allowance for doubtful accounts of 10,000 as of march 31, 2019 and december 31, 2018
                                  39,291,000                                                    
        common stock, .01 par value...
                                  755,000 753,000 753,000 752,000 752,000 750,000 748,000 746,000 744,000 742,000 742,000 742,000 740,000 738,000 737,000 733,000 732,000 729,000 725,000 721,000 720,000 719,000 717,000 704,000 703,000 700,000 699,000 698,000 697,000 695,000 694,000 694,000 694,000 693,000 460,000 460,000 459,000 458,000    456,000    447,000    290,000   
        common stock in treasury, at cost, 1,407 and 1,467 shares as of march 31, 2019 and december 31, 2018, respectively
                                  -9,308,000                                                    
        other intangible assets, less accumulated amortization of 17,216 and 12,853 as of december 31, 2018 and 2017, respectively
                                   26,518,000                                                   
        notes receivable – long–term portion, less allowance for doubtful accounts of 10,000 and 0 as of december 31, 2018 and 2017, respectively
                                   43,043,000                                                   
        common stock in treasury, at cost, 1,467 shares and 1,524 shares as of december 31, 2018 and 2017, respectively
                                   -9,663,000                                                   
        other intangible assets, less accumulated amortization of 16,175 and 12,853 as of september 30, 2018 and december 31, 2017, respectively
                                    27,559,000                                                  
        notes receivable – long–term portion, less allowance for doubtful accounts of 10,000 and 0 as of september 30, 2018 and december 31, 2017, respectively
                                    45,906,000                                                  
        common stock in treasury, at cost, 1,468 and 1,524 shares as of september 30, 2018 and december 31, 2017, respectively
                                    -9,623,000                                                  
        other intangible assets, less accumulated amortization of 15,084 and 12,853 as of june 30, 2018 and december 31, 2017, respectively
                                     28,650,000                                                 
        notes receivable — long-term portion
                                     37,386,000  15,476,000                                               
        common stock in treasury, at cost, 1,467 and 1,524 shares as of june 30, 2018 and december 31, 2017, respectively
                                     -9,577,000                                                 
        other intangible assets, less accumulated amortization of 13,969 and 12,853 as of march 31, 2018 and december 31, 2017, respectively
                                      29,766,000                                                
        notes receivable - long-term portion
                                      38,814,000                                                
        common stock in treasury, at cost, 1,469 and 1,524 shares as of march 31, 2018 and december 31, 2017, respectively
                                      -9,542,000                                                
        other intangible assets, less accumulated amortization of 12,853 and 14,672 as of december 31, 2017 and 2016, respectively
                                       30,881,000                                               
        common stock in treasury, at cost, 1,524 shares and 1,603 shares as of december 31, 2017 and 2016, respectively
                                       -9,858,000                                               
        other intangible assets, less accumulated amortization of 11,659 as of september 30, 2017 and 14,672 as of december 31, 2016
                                        32,075,000                                              
        notes receivable — long term portion
                                        11,495,000 7,526,000 7,056,000      2,626,000 3,463,000           2,885,000 2,973,000                         
        accrued insurance claims — long term portion
                                        67,818,000 66,077,000 64,581,000 64,080,000    62,510,000 60,531,000 56,708,000 52,718,000 50,514,000 43,381,000 18,843,000 18,343,000 18,325,000 17,201,000 16,589,000 15,807,000 15,712,000 15,753,000 14,797,000 13,478,000 12,358,000 13,681,000  13,147,000 11,845,000 14,074,000 12,377,000 12,042,000 11,302,000    9,201,000           
        common stock in treasury, at cost, 1,525 shares as of september 30, 2017 and 1,603 shares as of december 31, 2016
                                        -9,822,000                                              
        other intangible assets, less accumulated amortization of 10,651 as of june 30, 2017 and 14,672 as of december 31, 2016
                                         31,330,000                                             
        common stock in treasury, at cost, 1,535 shares as of june 30, 2017 and 1,603 shares as of december 31, 2016
                                         -9,840,000                                             
        other intangible assets, less accumulated amortization of 15,279 as of march 31, 2017 and 14,672 as of december 31, 2016
                                          13,802,000                                            
        common stock in treasury, at cost, 1,541 shares as of march 31, 2017 and 1,603 shares as of december 31, 2016
                                          -9,835,000                                            
        other intangible assets, less accumulated amortization of 14,672 as of december 31, 2016 and 19,473 as of december 31, 2015
                                           14,409,000                                           
        notes receivable — long term portion, net of reserve
                                           7,531,000    2,972,000   2,716,000 5,179,000                                   
        accrued legal expenses
                                           1,322,000 2,284,000 4,326,000 4,394,000 10,464,000                                       
        common stock in treasury, at cost, 1,603 shares as of december 31, 2016 and 1,759 shares as of december 31, 2015
                                           -10,185,000                                           
        prepaid expenses and other
                                            16,382,000 16,284,000 14,773,000 11,495,000 11,809,000 11,990,000 11,028,000 9,792,000 12,457,000 13,566,000 11,805,000 9,699,000 10,318,000 9,767,000 9,864,000 8,682,000 9,787,000 10,482,000 8,821,000 5,852,000 6,808,000 6,150,000 6,525,000 5,628,000 4,825,000 4,862,000 5,900,000 6,776,000 7,077,000 4,769,000 5,273,000 4,225,000 4,253,000 5,238,000 5,002,000 4,104,000 4,191,000 4,762,000 4,192,000 3,862,000 4,026,000 3,780,268 
        other intangible assets, less accumulated amortization of 14,065,000 as of september 30, 2016 and 19,473,000 as of december 31, 2015
                                            15,016,000                                          
        notes receivable - long term portion
                                            4,048,000 3,090,000 3,213,000                                        
        accrued insurance claims - long term portion
                                            63,213,000 64,156,000 61,783,000                                        
        common stock in treasury, at cost; 1,677,000 shares as of september 30, 2016 and 1,759,000 shares as of december 31, 2015
                                            -10,611,000                                          
        other intangible assets, less accumulated amortization of 13,458,000 as of june 30, 2016 and 19,473,000 as of december 31, 2015
                                             15,623,000                                         
        common stock in treasury, at cost; 1,698,000 shares as of june 30, 2016 and 1,759,000 shares as of december 31, 2015
                                             -10,738,000                                         
        prepaid income taxes
                                              915,000  1,086,000   912,000   1,007,000    1,628,000     405,000 1,135,000   3,978,000      1,239,000  2,838,000   1,823,000  2,304,000 4,174,000    237,652 
        other intangible assets, less accumulated amortization of 12,783,000 as of march 31, 2016 and 19,473,000 as of december 31, 2015
                                              16,297,000                                        
        common stock in treasury, at cost; 1,699,000 shares as of march 31, 2016 and 1,759,000 shares as of december 31, 2015
                                              -10,687,000                                        
        other intangible assets, less accumulated amortization of 19,473,000 in 2015 and 16,232,000 in 2014
                                               17,108,000                                       
        deferred income taxes — long term portion
                                               11,963,000 10,642,000 30,042,000 27,914,000 27,233,000 25,054,000 14,376,000 13,649,000 13,274,000 13,156,000 12,535,000 11,539,000 11,215,000 10,740,000 9,919,000 9,027,000 8,181,000 8,472,000  8,425,000 8,109,000 10,040,000 8,990,000 8,481,000 7,907,000    6,386,000           
        common stock in treasury, at cost, 1,759,000 shares in 2015 and 1,821,000 shares in 2014
                                               -11,005,000                                       
        other intangible assets, less accumulated amortization of 18,663,000 as of september 30, 2015 and 16,232,000 as of december 31, 2014
                                                17,918,000                                      
        common stock in treasury, at cost, 1,758,000 shares as of september 30, 2015 and 1,821,000 shares as of december 31, 2014
                                                -10,947,000                                      
        property and equipment:
                                                                                      
        laundry and linen equipment installations
                                                 1,128,000 2,727,000 2,578,000 2,556,000 2,524,000 2,472,000 2,516,000 2,436,000 2,441,000 2,413,000 2,336,000 2,248,000 2,237,000 2,125,000 2,100,000 2,044,000 1,967,000 1,935,000 1,886,000 1,774,000 1,728,000 1,733,000 1,695,000 1,672,000 1,785,000 1,784,000 1,767,000 1,698,000 1,695,000 1,697,000 1,718,000 1,706,000 1,729,000 1,748,000 1,781,000 1,785,000 2,251,913 
        housekeeping and office equipment and furniture
                                                 27,870,000 34,539,000 33,546,000 31,857,000 31,001,000 30,427,000 29,182,000 28,700,000 26,879,000 26,448,000 26,098,000    24,277,000                       
        autos and trucks
                                                 147,000 209,000 232,000 258,000 258,000 305,000 305,000 305,000 310,000 315,000 315,000 325,000 324,000 299,000 299,000 299,000 299,000 299,000 284,000 259,000 278,000 278,000 278,000 278,000 278,000 93,000 93,000 93,000 103,000 103,000 103,000 103,000 94,000 85,000 85,000 79,000 79,639 
        property and equipment: - sum
                                                 29,145,000 37,475,000 36,356,000 34,671,000 33,783,000 33,204,000 32,003,000 31,441,000 29,630,000 29,176,000 28,749,000 28,133,000 27,989,000 27,207,000 26,676,000 25,907,000 24,387,000 23,461,000 22,281,000 21,035,000 19,974,000 19,481,000 18,878,000 18,586,000 18,410,000 18,126,000 18,225,000 18,627,000 18,257,000 17,921,000 18,409,000 18,164,000 18,309,000 18,056,000 17,952,000 19,698,000 16,046,134 
        less accumulated depreciation
                                                 16,360,000 24,411,000 23,584,000 23,197,000 22,299,000 21,377,000 20,699,000 20,199,000 19,427,000 18,907,000 18,477,000 17,869,000 17,857,000 17,338,000 16,913,000 16,534,000 16,209,000 15,869,000 15,625,000 15,444,000 15,043,000 14,907,000 14,487,000 14,321,000 14,299,000 14,220,000 14,296,000 14,643,000 14,271,000 13,826,000 14,106,000 13,773,000 13,824,000 13,308,000 13,077,000 14,643,000 11,210,537 
        other intangible assets, less accumulated amortization of 17,852,000 as of june 30, 2015 and 16,232,000 as of december 31, 2014
                                                 18,729,000                                     
        common stock in treasury, at cost, 1,759,000 shares as of june 30, 2015 and 1,821,000 shares as of december 31, 2014
                                                 -10,904,000                                     
        other intangible assets, less accumulated amortization of 17,042,000 as of march 31, 2015 and 16,232,000 as of december 31, 2014
                                                  19,539,000                                    
        common stock in treasury, at cost, 1,759,000 shares as of march 31, 2015 and 1,821,000 shares as of december 31, 2014
                                                  -10,854,000                                    
        other intangible assets, less accumulated amortization of 16,232,000 in 2014 and 12,909,000 in 2013
                                                   20,349,000                                   
        common stock in treasury, at cost, 1,821,000 shares in 2014 and 1,892,000 shares in 2013
                                                   -11,183,000                                   
        other intangible assets, less accumulated amortization of 15,421,000 as of september 30, 2014 and 12,909,000 as of december 31, 2013
                                                    21,160,000                                  
        notes receivable — long term portion, net of discount
                                                    3,355,000 4,861,000 5,847,000 5,779,000 2,581,000 2,502,000 3,140,000 1,823,000   4,185,000 1,483,000 2,443,000  4,931,000 5,055,000 6,084,000 6,165,000 5,080,000 4,623,000    3,202,000           
        common stock in treasury, at cost, 1,828,000 shares as of september 30, 2014 and 1,892,000 shares as of december 31, 2013
                                                    -11,175,000                                  
        other intangible assets, less accumulated amortization of 14,594,000 as of june 30, 2014 and 12,909,000 as of december 31, 2013
                                                     21,987,000                                 
        common stock in treasury, at cost, 1,829,000 shares as of june 30, 2014 and 1,892,000 shares as of december 31, 2013
                                                     -11,132,000                                 
        other intangible assets, less accumulated amortization of 13,737,000 in 2014 and 12,909,000 in 2013
                                                      22,544,000                                
        common stock in treasury, at cost, 1,828,000 shares in 2014 and 1,892,000 shares in 2013
                                                      -11,079,000                                
        other intangible assets, less accumulated amortization of 12,909,000 in 2013 and 10,078,000 in 2012
                                                       23,372,000                               
        common stock in treasury, at cost, 1,892,000 shares in 2013 and 1,983,000 shares in 2012
                                                       -11,418,000                               
        other intangible assets, less accumulated amortization of 12,161,000 in 2013 and 10,078,000 in 2012
                                                        24,120,000                              
        common stock in treasury, at cost, 1,900,000 shares in 2013 and 1,983,000 shares in 2012
                                                        -11,423,000                              
        other intangible assets, less accumulated amortization of 11,162,000 in 2013 and 10,078,000 in 2012
                                                         4,119,000                             
        common stock in treasury, at cost, 1,899,000 shares in 2013 and 1,983,000 shares in 2012
                                                         -11,374,000                             
        other intangible assets, less accumulated amortization of 10,620,000 in 2013 and 10,078,000 in 2012
                                                          4,661,000                            
        common stock in treasury, at cost, 1,898,000 shares in 2013 and 1,983,000 shares in 2012
                                                          -11,330,000                            
        other intangible assets, less accumulated amortization of 10,078,000 in 2012 and 7,909,000 in 2011
                                                           5,203,000                           
        common stock in treasury, at cost, 1,983,000 shares in 2012 and 2,684,000 shares in 2011
                                                           -11,794,000                           
        assets
                                                                                      
        housekeeping equipment and office furniture
                                                            25,560,000 25,428,000 24,783,000  23,564,000 22,121,000 21,227,000 20,111,000 19,002,000 17,968,000 17,470,000 16,905,000 16,636,000 16,347,000  16,365,000 16,836,000 16,459,000  16,588,000 16,355,000 16,486,000  16,086,000   
        other intangible assets, less accumulated amortization of 9,535,000 in 2012 and 7,909,000 in 2011
                                                            5,746,000                          
        liabilities and stockholders’ equity
                                                                                      
        common stock in treasury, at cost, 2,210,000 shares in 2012 and 2,684,000 shares in 2011
                                                            -13,142,000                          
        other intangible assets, less accumulated amortization of 8,993,000 in 2012 and 7,909,000 in 2011
                                                             6,288,000                         
        common stock in treasury, at cost, 2,624,000 shares in 2012 and 2,684,000 shares in 2011
                                                             -15,606,000                         
        other intangible assets, less accumulated amortization of 8,451,000 in 2012 and 7,909,000 in 2011
                                                              6,830,000                        
        common stock in treasury, at cost, 2,647,000 shares in 2012 and 2,684,000 shares in 2011
                                                              -15,743,000                        
        other intangible assets, less accumulated amortization of 7,909,000 in 2011 and 5,938,000 in 2010
                                                               7,372,000                       
        common stock in treasury, at cost, 2,684,000 shares in 2011 and 3,139,000 shares in 2010
                                                               -15,960,000                       
        other intangible assets, less accumulated amortization of 7,366,000 in 2011 and 5,938,000 in 2010
                                                                7,914,000                      
        liabilities and stockholders' equity
                                                                                      
        common stock in treasury, at cost, 2,688,000 shares in 2011 and 3,139,000 shares in 2010
                                                                -15,985,000                      
        other intangible assets, less accumulated amortization of 6,874,000 in 2011 and 5,938,000 in 2010
                                                                 6,326,000                     
        notes receivable – long term portion, net of discount
                                                                 3,793,000                     
        deferred income taxes – long term portion
                                                                 9,085,000                     
        accrued insurance claims – long term portion
                                                                 13,715,000                     
        common stock in treasury, at cost, 2,975,000 shares in 2011 and 3,139,000 shares in 2010
                                                                 -17,692,000                     
        other intangible assets, less accumulated amortization of 6,406,000 in 2011 and 5,938,000 in 2010
                                                                  6,794,000                    
        common stock in treasury, at cost, 3,003,000 shares in 2011 and 3,139,000 shares in 2010
                                                                  -17,863,000                    
        other intangible assets, less accumulated amortization of 5,938,000 in 2010 and 4,038,000 in 2009
                                                                   7,262,000                   
        common stock in treasury, at cost, 3,139,000 shares in 2010 and 3,316,000 shares in 2009
                                                                   -18,667,000                   
        other intangible assets, less accumulated amortization of 5,470,000 in 2010 and 4,038,000 in 2009
                                                                    7,730,000                  
        common stock in treasury, at cost, 2,123,000 shares in 2010 and 2,211,000 shares in 2009
                                                                    -19,073,000                  
        other intangible assets, less accumulated amortization of 5,002,000 in 2010 and 4,038,000 in 2009
                                                                     8,198,000                 
        common stock in treasury, at cost 2,134,000 shares in 2010 and 2,211,000 shares in 2009
                                                                     -19,169,000                 
        goodwill, less accumulated amortization of 1,743,000 in 2010 and 2009
                                                                      16,955,000                
        other intangible assets, less accumulated amortization of 4,535,000 in 2010 and 4,038,000 in 2009
                                                                      8,665,000                
        common stock in treasury, at cost, 2,154,000 shares in 2010 and 2,211,000 shares in 2009
                                                                      -19,346,000                
        goodwill less accumulated amortization of 1,743,000 in 2009 and 2008
                                                                       17,087,000               
        other intangible assets less accumulated amortization of 4,038,000 in 2009 and 2,467,000 in 2008
                                                                       8,862,000               
        deferred compensation funding
                                                                       10,783,000    8,287,000 9,310,000 9,735,000 9,659,000 10,361,000 10,934,000 10,372,000 8,356,000 7,385,000 6,704,000 3,550,023 
        common stock in treasury, at cost, 2,211,000 shares in 2009 and 2,335,000 shares in 2008
                                                                       -19,860,000               
        other intangible assets, less accumulated amortization of 3,581,000 in 2009 and 2,466,000 in 2008
                                                                        9,319,000              
        notes receivable- long term portion, net of discount
                                                                        5,394,000 6,466,000 5,605,000  4,187,000 5,577,000 7,209,000  6,047,000 7,575,000 8,082,000  4,856,000  
        deferred income taxes- long term portion
                                                                        7,713,000 7,049,000 6,753,000  6,711,000 6,301,000 5,881,000  6,148,000 6,326,000 5,739,000  7,166,000 3,657,410 
        accrued insurance claims- long term portion
                                                                        11,206,000 10,233,000 9,761,000  10,047,000 9,593,000 9,054,000  10,399,000 11,442,000 10,786,000  11,220,000 9,334,813 
        common stock
                                                                        457,000 457,000 457,000  453,000 453,000 451,000  447,000 296,000 292,000    
        additional paid in capital
                                                                        90,699,000 90,046,000 85,229,000  82,914,000 81,920,000 80,419,000  74,734,000 72,268,000 62,565,000  57,561,000 38,600,027 
        common stock in treasury, at cost, 2,206,000 shares in 2009 and 2,335,000 in 2008
                                                                        -19,795,000              
        other intangible assets, less accumulated amortization of 3,124,000 in 2009 and 2,466,000 in 2008
                                                                         9,776,000             
        common stock in treasury, at cost, 2,216,000 shares in 2009 and 2,335,000 in 2008
                                                                         -19,881,000             
        total liabilitities and stockholders’ equity
                                                                         259,112,000 259,695,000  254,590,000 245,677,000   246,523,000 231,757,000 226,731,000  214,164,000  
        housekeeping equipment and office equipment
                                                                          16,249,000    16,121,000    16,223,000    
        other intangible assets, less accumulated amortization of 2,730,000 in 2009 and 2,466,000 in 2008
                                                                          4,769,000            
        common stock in treasury, at cost, 2,284,000 shares in 2009 and 2,335,000 shares in 2008
                                                                          -20,494,000            
        goodwill less accumulated amortization of 1,743,000 in 2008 and 2007
                                                                           15,020,000           
        other intangible assets less accumulated amortization of 2,466,000 in 2008 and 1,409,000 in 2007
                                                                           5,033,000           
        common stock in treasury, at cost, 2,335,000 shares in 2008 and 2,119,000 shares in 2007
                                                                           -20,936,000           
        goodwill, less accumulated amortization of 1,743,000 in 2008 and 2007
                                                                            15,020,000 15,020,000 15,020,000        
        other intangible assets, less accumulated amortization of 2,204,000 in 2008 and 1,409,000 in 2007
                                                                            5,298,000          
        common stock in treasury, at cost, 2,338,000 shares in 2008 and 2,119,000 in 2007
                                                                            -20,959,000          
        other intangible assets, less accumulated amortization of 1,938,000 in 2008 and 1,409,000 in 2007
                                                                             5,562,000         
        common stock in treasury, at cost, 2,332,000 shares in 2008 and 2,119,000 in 2007
                                                                             -20,855,000         
        other intangible assets, less accumulated amortization of 1,673,000 in 2008 and 1,409,000 in 2007
                                                                              5,826,000        
        liabilities and stockholders’ equity current liabilities:
                                                                                      
        common stock in treasury, at cost, 2,089,000 shares in 2008 and 2,119,000 shares in 2007
                                                                              -17,116,000        
        goodwill less accumulated amortization of 1,743,000 in 2007 and 2006
                                                                               15,020,000       
        other intangible assets less accumulated amortization of 1,409,00 in 2007 and 352,000 in 2006
                                                                               6,090,000       
        notes receivable—long term portion, net of discount
                                                                               6,058,000    7,861,000   
        deferred income taxes—long term portion
                                                                               6,349,000    5,403,000   
        accrued insurance claims—long term portion
                                                                               10,037,000    10,843,000   
        common stock in treasury, at cost, 2,119,000 shares in 2007 and 2,276,000 shares in 2006
                                                                               -16,903,000       
        goodwill, less accumulated amortization of 1,743,000 in 2007 and 2006
                                                                                14,907,000 14,563,000 14,570,000    
        other intangible assets, less accumulated amortization of of 1,145,000 in 2007 and 352,000 in 2006
                                                                                6,355,000      
        common stock in treasury, at cost, 2,121,000 shares in 2007 and 2,276,000 in 2006
                                                                                -17,123,000      
        other intangible assets, less accumulated amortization of of 881,000 in 2007 and 352,000 in 2006
                                                                                 6,619,000     
        common stock in treasury, at cost, 1,415,000 shares in 2007 and 1,517,000 in 2006
                                                                                 -16,933,000     
        other intangible assets, less accumulated amortization of 617,000 in 2007 and 352,000 in 2006
                                                                                  6,883,000    
        common stock in treasury, at cost, 1,458,000 shares in 2007 and 1,517,000 shares in 2006
                                                                                  -17,294,000    
        goodwill less accumulated amortization of 1,743,000 in 2006 and 2005
                                                                                   14,543,000   
        other intangible assets less accumulated amortization of 352,000
                                                                                   7,148,000   
        common stock in treasury, at cost, 1,517,000 shares in 2006 and 1,616,000 shares in 2005
                                                                                   -17,890,000   
        accounts of 3,403,000 in 2006 and 2,275,000 in 2005
                                                                                    77,274,000  
        housekeeping and office equipment
                                                                                    17,834,000 13,714,582 
        goodwill and other intangible assets- less accumulated amortization of 1,743,000 in 2006 and 2005
                                                                                    19,341,000  
        liabilities and stockholders' equity current liabilities:
                                                                                      
        stockholders' equity:
                                                                                      
        28,931,000 shares issued in 2006 and 28,677,000 in 2005
                                                                                    289,000  
        common stock in treasury, at cost, 1,515,000 shares in 2006 and
                                                                                      
        1,616,000 in 2005
                                                                                    -17,798,000  
        notes receivable- long term portion
                                                                                     4,683,035 
        total stockholders' equity
                                                                                     127,931,322 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 
                                                                                     
          cash flows from operating activities:
                                                                                     
          net income
        26,060,000 31,244,000 42,953,000 -32,366,000 17,228,000 11,920,000 14,030,000 -1,788,000 15,309,000 22,598,000 -5,494,000 8,598,000 12,684,000 16,159,000 322,000 6,820,000 11,329,000 2,105,000 9,540,000 9,565,000 24,653,000 27,747,000 27,644,000 23,101,000 20,190,000 18,895,000 18,344,000 18,186,000 9,156,000 31,552,000 26,086,000 25,814,000 72,000 20,186,000 23,472,000 22,551,000 22,017,000 20,299,000 19,711,000 18,760,000 18,626,000 9,134,000 17,086,000 16,288,000 15,516,000 15,472,000 -22,182,000 13,921,000 14,639,000 5,452,000 13,790,000 12,933,000 14,954,000 12,798,000 11,517,000 11,321,000 8,578,000 10,565,000 9,996,000 9,828,000 7,767,000 9,123,000 9,169,000 8,721,000 7,428,000 6,566,000 8,225,000 7,815,000 7,736,000 7,283,000 5,521,000 6,953,000 6,857,000 7,304,000 7,300,000 7,524,000 7,450,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                                     
          depreciation and amortization
        3,806,000 3,870,000 4,029,000 5,001,000 3,878,000 3,602,000 3,773,000 3,679,000 3,531,000 3,779,000 3,250,000 3,595,000 3,720,000 3,756,000 3,795,000 3,618,000 4,147,000 3,706,000 3,659,000 3,695,000 3,607,000 3,516,000 3,606,000 3,590,000 3,556,000 3,543,000 3,400,000 3,508,000 3,489,000 2,250,000 2,186,000 2,426,000 2,410,000 2,544,000 2,103,000 2,353,000 1,886,000 1,864,000 1,720,000 1,947,000 1,965,000 1,982,000 1,847,000 1,920,000 1,911,000 1,963,000 1,725,000 1,824,000 1,757,000 1,713,000 1,784,000 1,355,000 1,352,000 1,343,000 1,245,000 1,280,000 1,248,000 1,264,000 1,074,000 1,045,000 1,004,000 1,039,000 885,000 917,000 923,000 893,000 823,000 821,000 692,000 700,000 658,000 746,000 748,000 755,000 713,000 791,000 745,000 
          bad debt provision
        3,784,000 4,067,000 5,631,000 72,293,000 1,088,000 9,912,000 205,000 31,722,000 4,921,000 3,264,000 14,170,000 11,263,000 6,907,000 8,627,000 6,318,000 14,173,000 2,851,000 -307,000 4,081,000 3,294,000 3,415,000 2,880,000 835,000 3,861,000 2,060,000 2,500,000 1,515,000 2,995,000 18,470,000 9,000,000 3,000,000 2,250,000 37,137,000 2,250,000 1,900,000 1,050,000 1,050,000 1,429,000 1,050,000 1,050,000 1,100,000 2,110,000 550,000 750,000 925,000 750,000 2,170,000 800,000 750,000 1,050,000 290,000 200,000 450,000 410,000 400,000 600,000 750,000 350,000 600,000 340,000 1,160,000 650,000 500,000 450,000 600,000 448,000 506,000 750,000 700,000 1,184,000 2,200,000 350,000 500,000 1,025,000 2,290,000 850,000 1,977,000 
          deferred income taxes
        607,000 3,263,000 31,119,000 -13,707,000 -1,473,000 -1,332,000 1,873,000 -3,364,000 -121,000                                                           -474,000 -273,000    408,000     
          share-based compensation expense
        2,764,000 3,124,000 2,602,000 2,541,000 3,738,000 2,337,000 2,231,000 2,113,000 2,484,000 2,192,000 2,384,000 2,351,000 2,058,000 2,058,000 2,388,000 2,372,000 2,396,000 1,859,000 2,399,000 2,298,000 2,271,000 1,955,000 1,992,000 1,952,000 1,973,000                              555,000 584,000 560,000  537,000 533,000 560,000            179,000     
          amortization of premium on marketable securities
        48,000 -64,000 124,000 118,000 117,000 501,000 208,000 336,000 459,000 535,000 536,000 540,000 533,000 546,000 548,000 564,000 561,000 535,000 602,000 602,000 536,000 413,000 459,000 500,000 450,000 415,000 307,000 330,000 382,000 366,000 354,000 314,000 339,000 367,000 360,000 226,000 343,000 670,000 390,000 345,000 318,000 367,000 129,000 92,000 93,000 91,000 89,000 86,000 88,000 88,000 146,000 149,000 154,000 158,000 150,000 148,000 198,000 264,000 256,000 247,000 232,000 217,000 197,000 196,000 230,000 254,000 238,000 234,000 230,000         
          unrealized loss on deferred compensation fund investments
        1,583,000    1,448,000     -4,083,000 1,228,000 -2,288,000 -1,502,000 -2,023,000 825,000 6,546,000 4,074,000    -1,146,000    5,761,000            -1,209,000    278,000 -915,000            -159,000    -880,000 1,532,000     764,000 -394,000 -343,000 -932,000 -780,000 258,000 1,177,000 721,000 -13,000 504,000     
          changes in other long-term liabilities
         -393,000 9,000 -40,000 -190,000 -1,642,000 1,308,000  -731,000 -585,000 336,000    -1,760,000                                                             
          net loss on disposals of property and equipment
        91,000 169,000 92,000 48,000 113,000 147,000 102,000 225,000 180,000 329,000 102,000                                                                   
          share of losses from equity method investment
          4,765,000   335,000                                                                        
          changes in operating assets and liabilities:
                                                                                     
          accounts and notes receivable
        -15,166,000 -28,000 21,014,000 -18,000,000 2,241,000 -3,900,000 -9,853,000 -21,049,000 -27,007,000 -15,029,000 55,000 -38,952,000 -20,633,000 -3,665,000 -16,232,000 -31,588,000 -27,222,000 4,090,000 -18,221,000 -24,957,000 1,903,000 23,718,000 19,805,000 12,280,000 -9,645,000 -4,896,000 669,000 681,000 -25,986,000 5,510,000 -23,631,000 -9,473,000 -16,769,000 -17,942,000 -34,510,000 -58,300,000 -10,887,000 -6,097,000 -11,764,000 -20,291,000 -22,899,000 -7,684,000 -4,291,000 4,867,000 -11,746,000 -1,314,000 4,517,000 -9,840,000 -6,855,000 -4,760,000 -19,307,000 -16,117,000 -10,695,000 -1,858,000 -1,885,000 -7,060,000 -831,000 -13,802,000 -688,000 -6,180,000 -4,099,000 -713,000 -1,610,000 -2,637,000 -1,310,000 -83,000 462,000 -8,225,000 -2,356,000 -3,053,000 -9,342,000 -3,341,000 -2,105,000 6,358,000 -8,302,000 -4,482,000 -4,582,000 
          inventories and supplies
        906,000 405,000 154,000 -82,000 -525,000 297,000 811,000 185,000 438,000 709,000 788,000 253,000 935,000 1,548,000 823,000 1,285,000 1,195,000 727,000 1,294,000 1,162,000 2,416,000 1,106,000 985,000 3,261,000 -421,000 2,371,000 1,089,000 1,005,000 300,000 152,000 -171,000 850,000 119,000 -876,000 -759,000 -744,000 506,000 -197,000 324,000 -1,619,000 -421,000 -494,000 25,000 44,000 -2,654,000 111,000 -163,000 -309,000 -1,868,000 -1,931,000 -52,000 79,000 -1,267,000 -358,000 -1,084,000 -822,000 -2,949,000 -779,000 -573,000 -230,000 -1,756,000 -511,000 -891,000 -481,000 -171,000 -259,000 -859,000 669,000 -82,000 -591,000 -342,000 52,000 -541,000 -1,053,000 -361,000 -522,000 
          prepaid expenses and other assets
        -7,800,000 6,226,000 -4,446,000 4,896,000 -4,053,000 4,207,000 -12,000 -6,841,000 3,350,000 4,130,000 796,000 3,748,000 4,076,000 3,755,000 6,688,000 1,954,000 -2,462,000 11,209,000 -3,487,000 -158,000 -19,814,000 2,832,000 343,000 643,000 -4,574,000 2,839,000 3,488,000 -2,524,000 -323,000 329,000 3,183,000 1,025,000 -3,483,000 2,113,000 -5,569,000 -3,230,000 -2,859,000 2,809,000 -492,000 -1,510,000 -3,277,000 310,000 179,000 -964,000 -1,235,000 2,665,000 1,109,000 -2,085,000 -2,106,000 619,000 1,256,000 97,000 -1,182,000 1,106,000 694,000 -1,661,000 -2,969,000 957,000 -659,000 379,000 -897,000 -803,000 37,000 1,064,000 708,000 268,000 -2,308,000 7,578,000 -1,026,000 27,000 987,000 -237,000 -898,000 88,000 586,000 -571,000 -330,000 
          deferred compensation funding
        1,545,000 -151,000 -246,000 -261,000 976,000 -507,000 -184,000 -496,000 653,000 -321,000 -615,000 -421,000 683,000 -3,180,000 3,342,000 146,000 3,605,000 6,589,000 -372,000 -546,000 990,000 -540,000 -502,000 -488,000 1,478,000 -515,000 -312,000 -655,000 744,000 -395,000 -610,000 -272,000 -259,000 -340,000 -15,000 -148,000 246,000 3,673,000 30,000 -703,000 -268,000 -1,485,000 1,079,000 -694,000 451,000 -538,000 -201,000 -1,005,000 -798,000 -961,000 -1,482,000 -503,000 -1,423,000 -2,430,000 -543,000 -614,000 -464,000 -513,000 -457,000 -395,000 -439,000 1,279,000 -425,000 -450,000 -375,000 -200,000 -152,000 -123,000 -225,000 -153,000 -296,000 -63,000 197,000 -556,000 -392,000 -147,000 -589,000 
          accounts payable and other accrued expenses
        4,490,000  5,577,000 -5,375,000 -5,512,000 1,163,000 4,791,000 -2,202,000 -13,493,000 11,706,000 5,061,000 -2,915,000 -6,422,000 -614,000 2,759,000 -12,842,000 -3,051,000 -450,000 -7,133,000 11,763,000 6,064,000 1,854,000 -8,140,000 -585,000 -379,000 -112,000 -596,000 -3,502,000 -5,322,000 -9,199,000 6,683,000 -1,150,000 -5,478,000 12,299,000 -6,652,000 1,911,000 3,639,000 2,523,000 -7,326,000 4,652,000 -4,100,000 10,106,000 1,776,000 -7,128,000 -2,351,000 -14,099,000 16,533,000 -1,473,000 -469,000 12,095,000 5,412,000 784,000 7,670,000 -1,959,000 4,864,000 -579,000 11,338,000 585,000 496,000 -2,479,000 319,000 3,835,000 -1,187,000 -173,000 -1,169,000 2,195,000 -917,000 260,000 396,000 1,102,000 -33,000 -814,000 -340,000 -912,000 1,951,000 -632,000 -2,541,000 
          accrued payroll, accrued and withheld payroll taxes
        20,319,000  -15,799,000 20,256,000 -4,591,000 9,247,000 -14,682,000 18,677,000 -16,815,000 21,563,000 -15,039,000 18,829,000 -21,167,000 -3,148,000 -15,717,000 19,410,000 -24,933,000 3,896,000 -15,997,000 20,659,000 -30,747,000 45,171,000 -1,748,000 20,730,000 -4,626,000 -17,680,000 23,875,000 -21,143,000 18,465,000 -17,117,000 24,892,000 -20,236,000 18,546,000 -16,648,000 27,003,000 -13,727,000 15,299,000 -15,758,000 12,736,000 -8,741,000 18,070,000 -10,125,000 -13,335,000 16,148,000 -21,002,000 23,293,000 -8,142,000 -13,017,000 9,679,000 18,294,000 -9,956,000 13,293,000 -15,282,000 15,528,000 -9,922,000 13,052,000 -12,516,000 14,803,000 -7,923,000 5,830,000 -6,391,000 12,936,000 -7,698,000 9,818,000 -10,619,000 -7,225,000 9,732,000 -6,856,000 7,149,000 -6,445,000 8,858,000 -6,245,000 7,585,000 -5,780,000 8,451,000 -6,652,000 6,242,000 
          deferred erc credits
         1,000 -7,740,000 7,859,000 12,157,000                                                                         
          income taxes receivable
        8,018,000    1,212,000        -1,748,000    3,764,000                                                             
          accrued insurance claims
        -4,210,000 -2,388,000 -2,510,000 -3,779,000 2,174,000 -6,014,000 228,000 -3,132,000 1,556,000 -10,536,000 1,103,000 2,738,000 2,366,000 -7,242,000 338,000 3,161,000 3,056,000 2,095,000 1,926,000 2,323,000 622,000 -13,644,000 3,054,000 4,017,000 1,379,000 -156,000 2,578,000 2,801,000 2,622,000 -13,348,000 1,788,000 3,018,000 3,443,000 -7,946,000 2,593,000 1,615,000 784,000 534,000 422,000 3,439,000 1,009,000 2,603,000 5,030,000 3,375,000 2,979,000 11,182,000 30,162,000 714,000 26,000 1,605,000 874,000 1,118,000 19,000 58,000 1,365,000 1,884,000 1,601,000 -1,891,000 -48,000 811,000 1,860,000 -3,185,000 2,424,000 479,000 1,057,000 138,000 1,390,000 674,000 800,000 -1,209,000 648,000 771,000 -1,405,000 -516,000 -1,490,000 936,000 -81,000 
          deferred compensation liability
        -3,115,000 515,000 4,655,000 4,932,000 -2,681,000 798,000 2,984,000 2,025,000 3,394,000 4,632,000 -552,000 2,982,000 713,000 2,215,000 -4,462,000 -7,972,000 -7,905,000 2,994,000 340,000 3,531,000 556,000 5,642,000 3,833,000 7,111,000 -6,994,000 2,761,000 521,000 2,283,000 2,917,000 -3,834,000 2,344,000 916,000 1,024,000 1,328,000 1,229,000 1,445,000 1,059,000 -3,015,000 811,000 1,373,000 100,000 2,528,000 -2,367,000 876,000 76,000 1,093,000 124,000 1,801,000 1,230,000 2,211,000 2,588,000 610,000 2,312,000 2,523,000 1,454,000 408,000 1,952,000 1,438,000 -942,000 633,000 1,016,000 -358,000 1,359,000 -202,000 898,000 615,000 1,165,000 984,000 53,000 -952,000 -338,000 168,000 -603,000 -190,000 569,000 -144,000 871,000 
          net cash from operating activities
        43,730,000 17,387,000 71,293,000 28,787,000 27,501,000 36,204,000 4,312,000 16,319,000 -26,033,000 49,445,000 2,940,000 7,403,000 -16,290,000 22,893,000 -9,896,000 9,018,000 -30,182,000 31,377,000 -23,111,000 25,340,000 3,502,000 75,664,000 49,166,000 79,695,000 12,688,000 13,359,000 59,883,000 2,762,000 17,577,000 5,522,000 47,114,000 3,464,000 23,931,000 4,508,000 9,683,000 -41,207,000 34,646,000 3,502,000 17,687,000 10,522,000 9,689,000 10,856,000 18,992,000 39,717,000 -6,204,000 34,079,000 8,824,000 -3,493,000 18,320,000 24,286,000 -6,108,000 19,007,000 -5,027,000 24,957,000 8,037,000 17,941,000 9,441,000 13,561,000 3,869,000 9,576,000 5,942,000 22,071,000 1,464,000 16,473,000 -2,261,000 3,129,000 20,115,000 -1,879,000 16,942,000 -1,764,000 8,912,000 2,535,000 6,979,000 10,800,000 15,551,000 -7,750,000 7,170,000 
          capital expenditures
        -1,398,000 -1,380,000 -1,336,000 -1,359,000 -1,743,000 -1,427,000 -1,399,000 -1,312,000 -2,198,000 -1,433,000 -1,876,000 -1,087,000 -1,010,000 -1,068,000 -1,562,000 -1,173,000 -1,407,000 -1,485,000 -2,109,000 -1,243,000 -850,000 -1,267,000 -1,239,000 -1,047,000 -788,000 -984,000 -888,000 -1,160,000 -1,336,000 -1,201,000 -1,167,000 -1,237,000 -1,335,000 -1,435,000 -1,288,000 -1,349,000 -1,325,000 -1,534,000 -954,000 -1,495,000 -1,459,000 -1,023,000 -1,686,000 -853,000 -1,436,000 -2,139,000 -918,000 -1,225,000 -1,513,000 -1,027,000 -1,033,000 -734,000 -968,000 -816,000 -843,000 -1,012,000 -813,000 -1,114,000 -1,778,000 -1,165,000 -1,488,000 -1,637,000 -1,078,000 -845,000 -614,000 -561,000 -529,000 -645,000 -419,000 -531,000 -317,000 -392,000 -337,000 -24,000 -755,000 -311,000 -415,000 
          free cash flows
        42,332,000 16,007,000 69,957,000 27,428,000 25,758,000 34,777,000 2,913,000 15,007,000 -28,231,000 48,012,000 1,064,000 6,316,000 -17,300,000 21,825,000 -11,458,000 7,845,000 -31,589,000 29,892,000 -25,220,000 24,097,000 2,652,000 74,397,000 47,927,000 78,648,000 11,900,000 12,375,000 58,995,000 1,602,000 16,241,000 4,321,000 45,947,000 2,227,000 22,596,000 3,073,000 8,395,000 -42,556,000 33,321,000 1,968,000 16,733,000 9,027,000 8,230,000 9,833,000 17,306,000 38,864,000 -7,640,000 31,940,000 7,906,000 -4,718,000 16,807,000 23,259,000 -7,141,000 18,273,000 -5,995,000 24,141,000 7,194,000 16,929,000 8,628,000 12,447,000 2,091,000 8,411,000 4,454,000 20,434,000 386,000 15,628,000 -2,875,000 2,568,000 19,586,000 -2,524,000 16,523,000 -2,295,000 8,595,000 2,143,000 6,642,000 10,776,000 14,796,000 -8,061,000 6,755,000 
          cash flows from investing activities:
                                                                                     
          disposals of property and equipment
        55,000  10,000 50,000 26,000 18,000 43,000 125,000 25,000 36,000                                                                   
          additions to property and equipment
        -1,398,000 -1,380,000 -1,336,000 -1,359,000 -1,743,000 -1,427,000 -1,399,000 -1,312,000 -2,198,000 -1,433,000 -1,876,000 -1,087,000 -1,010,000 -1,068,000 -1,562,000 -1,173,000 -1,407,000 -1,485,000 -2,109,000 -1,243,000 -850,000 -1,267,000 -1,239,000 -1,047,000 -788,000 -984,000 -888,000 -1,160,000 -1,336,000 -1,201,000 -1,167,000 -1,237,000 -1,335,000 -1,435,000 -1,288,000 -1,349,000 -1,325,000 -1,534,000 -954,000 -1,495,000 -1,459,000 -1,023,000 -1,686,000 -853,000 -1,436,000 -2,139,000 -918,000 -1,225,000 -1,513,000 -1,027,000 -1,033,000 -734,000 -968,000 -816,000 -843,000 -1,012,000 -813,000 -1,114,000 -1,778,000 -1,165,000 -1,488,000 -1,637,000 -1,078,000 -845,000 -614,000 -561,000 -529,000 -645,000 -419,000 -531,000 -317,000 -392,000 -337,000 -24,000 -755,000 -311,000 -415,000 
          cash paid for acquisition
         134,000 -7,287,000                             -2,000,000                                   -113,000 -344,000 7,000 -27,000 
          cash paid for investments
        -4,575,000 -500,000 -2,125,000                                                                         
          purchases of marketable securities
        -7,313,000 -4,833,000 -9,273,000 -1,175,000 -3,436,000 -600,000 -13,610,000       -1,350,000 -1,525,000 -3,652,000 -1,545,000 -7,236,000 -7,902,000 -30,805,000 -1,303,000 -4,269,000 -2,670,000 -14,917,000 -10,393,000 -3,957,000 -4,277,000 -1,228,000 -3,616,000 -4,056,000 -5,397,000 -11,712,000 -6,210,000 -8,081,000 -7,858,000 -10,698,000 -4,123,000 -9,662,000 -4,966,000 -22,931,000 -49,194,000 -2,036,000 -989,000 -1,507,000 -1,696,000 -709,000 -1,228,000 -1,799,000 -202,000 -3,060,000 -1,537,000 -2,088,000 -2,383,000 -5,139,000 -1,223,000 -1,658,000 -8,673,000 -3,895,000 -4,708,000 -4,910,000 -7,874,000 -11,466,000 -14,623,000 -1,392,000 1,035,000 -1,211,000 -2,118,000         
          sales of marketable securities
        1,682,000 15,123,000 7,853,000 134,000 95,000 23,807,000 15,254,000 11,312,000 16,639,000 50,000 567,000 1,165,000 210,000 570,000 290,000 8,007,000 1,519,000 14,329,000 337,000 7,036,000 4,995,000 290,000 200,000 4,022,000 1,757,000 3,628,000 10,483,000 3,606,000 3,539,000 305,000 2,931,000 3,308,000 2,467,000 8,183,000 5,673,000 6,958,000 7,723,000 20,027,000 1,853,000 3,644,000 2,640,000 12,781,000 1,973,000 1,967,000 846,000 1,447,000 830,000 1,176,000 939,000 1,837,000 10,520,000 3,265,000 185,000 1,888,000 2,306,000 4,889,000 10,895,000 11,094,000 7,975,000 4,244,000 6,658,000 5,291,000 7,208,000 11,103,000 22,481,000             
          net cash from investing activities
        -11,549,000 8,563,000 -2,746,000 -2,350,000 -14,470,000 21,798,000 288,000 -27,755,000 11,716,000    -743,000 -292,000 -1,286,000 5,533,000 -1,375,000 -8,674,000 -3,200,000 -7,413,000 -3,703,000 -31,983,000 -2,174,000 -1,116,000 -1,572,000 -12,201,000 -758,000 -1,488,000 -2,010,000 -1,965,000 -1,593,000 -1,826,000 -4,202,000 -4,890,000 -3,730,000 -4,991,000 -1,356,000 7,893,000 -3,174,000 -7,500,000 -3,671,000 -11,154,000 -48,726,000 -896,000 -1,538,000 -2,509,000 -1,754,000 -455,000 -1,742,000 -989,000 4,293,000 -543,000 -2,156,000    8,859,000 8,324,000 -3,474,000 -813,000 477,000 -1,256,000 -1,744,000 -1,170,000 7,250,000 -1,952,000 514,000 -6,273,000 -2,522,000 -48,822,000 -393,000 -372,000 -275,000 -515,000 -698,000 -256,000 -381,000 
          cash flows from financing activities:
                                                                                     
          purchases of treasury stock
        -23,964,000 -19,604,000 -27,271,000 -7,675,000 -7,036,000 -1,010,000 -1,008,000   -5,044,000 -4,016,000 -2,223,000     -16,138,000 -3,562,000                                                           
          payments of statutory withholding on net issuance of restricted stock units
        -4,162,000  -1,744,000 -1,030,000 -1,000 -870,000 -2,000 -1,069,000 -9,000 100,000 -1,501,000 -14,000 -661,000 -8,000 -579,000                                                 
          proceeds from the exercise of stock options
        1,448,000             410,000 187,000 383,000 380,000 1,475,000 1,027,000 31,000 138,000 1,724,000 462,000 67,000 1,186,000 1,913,000 1,662,000 1,395,000 750,000 4,710,000 2,470,000 3,081,000 2,570,000 4,687,000 368,000 823,000 2,243,000 2,534,000 1,314,000 852,000 1,201,000 2,884,000 1,674,000 688,000 1,275,000 2,559,000 959,000 789,000 1,040,000 3,640,000 1,663,000 1,246,000 824,000 1,840,000 283,000 739,000 420,000 921,000 2,320,000 1,077,000 545,000 848,000 1,054,000 403,000 405,000 18,000 493,000 647,000 676,000 1,731,000 127,000 1,125,000 2,513,000 1,697,000 
          net cash from financing activities
        -26,678,000 -19,604,000 -27,271,000 -7,675,000 -8,780,000 -26,010,000 -6,008,000 -13,000,000 13,970,000 -25,045,000 984,000 5,000,000 6,907,000 -15,955,000 -866,000 -15,769,000 -6,338,000 -31,491,000 -18,694,000 -16,994,000 -15,475,000 -14,271,000 -15,181,000 -64,968,000 26,053,000 -14,401,000 -34,709,000 -13,480,000 -13,230,000 7,271,000 -43,479,000 1,028,000 -18,797,000 -1,066,000 -2,006,000 5,026,000 -8,913,000 -11,869,000 -11,905,000 -10,423,000 -10,087,000 -10,882,000 -11,797,000 -11,213,000 -9,246,000 -9,166,000 -11,463,000 -10,475,000 -9,041,000 -9,701,000 -10,786,000 -10,031,000 -7,039,000 -8,175,000 -9,549,000 -9,346,000 -8,683,000 -10,374,000 -8,765,000 -9,957,000 -9,419,000 -7,232,000 -8,579,000 -8,983,000 -7,642,000 -7,313,000 -7,731,000 -11,785,000 -7,445,000 -5,485,000 -5,694,000 -8,373,000 -2,208,000 -3,869,000 -2,258,000 2,457,000 -787,000 
          net increase in cash, cash equivalents and restricted cash equivalents
        5,503,000  41,276,000 18,762,000 4,251,000  -1,408,000                                                                       
          cash, cash equivalents and restricted cash equivalents at beginning of the period
        130,766,000 60,131,000 54,330,000                                                                     
          cash, cash equivalents and restricted cash equivalents at end of the period
        136,269,000 6,346,000 41,276,000 18,762,000 64,382,000 31,992,000 -1,408,000 -24,436,000 53,983,000                                                                     
          adjustments to reconcile net income to net cash from operating activities
                                                                                     
          unrealized gain on deferred compensation fund investments
         -400,000 -3,731,000   -359,000 -2,421,000 -1,278,000 -4,110,000         -2,439,000 95,000    -3,249,000    -7,000 -1,596,000 -3,445,000  -1,812,000 -959,000 -300,000  -1,047,000    -959,000         -624,000 -264,000  -952,000 30,000 -789,000                     364,000 -170,000 -238,000 -382,000 
          share of loss from equity method investment
                                                                                     
          accounts payable and other accrued expenses and current liabilities
                                                                                     
          accrued payroll and related taxes
                                                                                     
          proceeds from disposals of property and equipment
                                                                                     
          repayments of short-term borrowings
                                                                                   
          payments of statutory withholding on net issuance of common stock
                                                                                     
          net increase in cash, cash equivalents, and restricted cash equivalents
                                                                                     
          supplementary cash flow information:
                                                                                     
          cash paid for interest
                                            204,000 133,000 187,000 99,000 155,000 121,000 102,000 13,000 22,000 34,000 49,000 60,000 13,000                             
          income taxes receivable/payable
                                                                                     
          income taxes payable
             3,890,000 221,000 -851,000 -2,070,000           -5,313,000 7,908,000 -25,495,000 4,573,000 10,367,000 2,480,000 5,009,000 3,066,000 -1,410,000 -5,730,000  1,441,000 -2,664,000 -13,291,000 5,536,000 522,000 5,491,000 1,852,000 -415,000 772,000 9,801,000 -2,703,000 6,170,000 -12,685,000 6,333,000 6,179,000 -1,567,000 -4,725,000 5,381,000 -1,878,000 -4,393,000 1,792,000 4,479,000 -1,906,000 -1,290,000   2,655,000      -229,000 -280,000 689,000 -294,000   4,931,000 -1,110,000 -198,000 1,308,000 -1,726,000 1,726,000 -192,000 -82,000 
          proceeds from short-term borrowings
               -10,000,000 15,000,000  5,000,000 5,000,000 10,000,000  15,000,000 10,000,000        40,000,000                                                     
          share of income from equity method investment
            -43,000                                                                         
          acquisition of equity method investment
             -2,750,000                                                                     
          cash paid for acquisitions
                     -114,000                                                             
          dividends paid
                     -15,984,000 -15,890,000 -15,795,000 -15,704,000 -15,554,000 -15,638,000 -15,562,000 -15,472,000 -15,322,000 -15,222,000 -15,128,000 -15,033,000 -14,886,000 -14,789,000 -14,688,000 -14,588,000 -14,453,000 -14,350,000 -14,249,000 -14,149,000 -13,942,000 -13,928,000 -13,750,000 -13,624,000 -13,493,000 -13,398,000 -13,293,000 -13,158,000 -13,037,000 -12,923,000 -12,760,000 -12,655,000 -12,479,000 -12,335,000 -12,186,000 -12,077,000 -11,947,000 -11,829,000 -11,516,000 -11,415,000 -11,227,000 -11,063,000 -10,956,000 -10,847,000 -10,734,000 -10,592,000 -10,500,000 -10,402,000 -10,260,000 -10,124,000 -9,676,000 -9,225,000 -8,740,000 -8,292,000 -7,826,000 -7,388,000 -6,906,000 -6,474,000 -6,024,000 -5,579,000 -5,125,000 -4,539,000 -4,185,000 -3,887,000 
          reissuance of treasury stock pursuant to dividend reinvestment plan
                     29,000 26,000 26,000 25,000 23,000 23,000 23,000 23,000 24,000 24,000 22,000 23,000 23,000 21,000 22,000 24,000 21,000 22,000 22,000 24,000 24,000 23,000 24,000 24,000 25,000 27,000 29,000 28,000 30,000 29,000 28,000 26,000 55,000 27,000   27,000 27,000 26,000 27,000 29,000 30,000 29,000 30,000 30,000 32,000 31,000 35,000 32,000 33,000 29,000 27,000  21,000 22,000 21,000  15,000 14,000 17,000  15,000 15,000 14,000 
          (repayments of) proceeds from short-term borrowings
                                                                                     
          cash paid for income taxes
                                                                                     
          cash flows from operating activities
                                                                                     
          net decrease in cash, cash equivalents and restricted cash equivalents
                -347,000                                                                     
          deferred income tax expense
                                             253,000 207,000                                       
          changes in fair value of other long-term liabilities
                                                                                     
          income taxes receivable and payable
                                                                                     
          cash flows (used in) from investing activities:
                                                                                     
          short-term borrowings, net of repayments
                                                                                     
          net change in cash and cash equivalents
                   12,509,000 -10,126,000 6,646,000 -12,048,000 -1,218,000 -37,895,000 -8,788,000 -45,005,000 933,000 -15,676,000 29,410,000 31,811,000 13,611,000 37,169,000 -13,243,000 24,416,000 -12,206,000 2,337,000 10,828,000 2,042,000 2,666,000 932,000 -1,448,000 3,947,000 -41,172,000 24,377,000 -474,000 2,608,000 -7,401,000 -4,069,000 -11,180,000 -41,531,000 27,608,000 -16,988,000 22,404,000 -4,393,000 -14,423,000 7,537,000 13,596,000                            
          cash and cash equivalents at beginning of the period
                 26,279,000 70,794,000 139,330,000 27,329,000 26,025,000 9,557,000 23,853,000 33,189,000 75,280,000 64,155,000 68,949,000 38,639,000 39,692,000 31,301,000  37,501,000  92,461,000  72,997,000 
          cash and cash equivalents at end of the period
                 23,017,000 2,651,000 12,509,000 16,153,000 6,646,000 -12,048,000 -1,218,000 32,899,000 -8,788,000 -45,005,000 933,000 123,654,000 29,410,000 31,811,000 13,611,000 64,498,000 -13,243,000 24,416,000 -12,206,000 28,362,000 10,828,000 2,042,000 2,666,000 10,489,000 -1,448,000 3,947,000 -41,172,000 48,230,000 -474,000 2,608,000 -7,401,000 29,120,000 -11,180,000 -41,531,000 27,608,000 58,292,000 22,404,000 -4,393,000 -14,423,000 71,692,000 13,596,000 -12,601,000 8,433,000 54,727,000 15,773,000 -2,423,000 7,343,000 48,256,000 11,511,000 -8,370,000 -1,194,000 36,692,000 13,583,000 -8,859,000 6,320,000 28,648,000  12,898,000 -19,937,000 44,476,000  2,825,000 -6,210,000 96,957,000  12,595,000 -5,549,000 78,999,000 
          accrued variable consideration for acquisition of businesses
                                                                                     
          deferred income tax benefit
                  -4,247,000 -1,000 43,000              137,000                                                   
          income taxes payable and receivable
                  145,000                                                                   
          net cash (used in) from investing activities
                  -1,273,000                                                                   
          net increase in cash and cash equivalents
                                                           8,433,000 -14,222,000 15,773,000 -2,423,000 7,343,000 9,617,000       6,320,000 -2,653,000    6,975,000 -56,071,000 2,825,000 -6,210,000 4,496,000 6,416,000 12,595,000 -5,549,000 6,002,000 
          net loss on disposals of fixed assets
                    128,000  382,000 387,000 173,000                                                             
          disposals of fixed assets
                    57,000 206,000 -14,000 49,000 152,000 10,000 117,000 30,000 54,000 -201,000 168,000 178,000 129,000 72,000 40,000 23,000 64,000 159,000 259,000 159,000 63,000 74,000 95,000 65,000 104,000 98,000 50,000 13,000 114,000 19,000 181,000 26,000 41,000 -310,000 30,000 303,000 60,000 8,000 -14,000 164,000 7,000 9,000      15,000 38,000 6,000 -1,000 8,000 196,000 15,000 151,000 -76,000 20,000 62,000 -378,000 401,000 48,000 61,000 
          loss on sale of assets
                         312,000 560,000 329,000 268,000                                                         
          income taxes receivable / payable
                                                                                     
          changes in contingent consideration
                      -358,000                                                               
          taxes receivable
                                                                                     
          supplemental disclosure of non-cash investing activities
                                                                                     
          accrued variable consideration from acquisition of a business
                          4,859,000                                                           
          cash flows from (used in) investing activities:
                                                                                     
          cash paid for income taxes, net of refunds
                                            9,544,000 10,391,000 9,879,000 1,061,000 11,201,000 393,000 -135,000 6,219,000 1,424,000 9,270,000 5,073,000 2,916,000 7,821,000                             
          contingent shares settled pursuant to acquisition
                                                                                     
          stock-based compensation expense
                                 1,397,000 1,809,000 1,821,000 1,838,000         1,139,000 1,022,000 973,000 1,118,000 974,000 834,000 849,000 884,000 803,000 746,000 769,000 762,000 816,000 595,000 613,000 583,000         385,000 338,000 345,000 264,000 335,000 240,000 242,000 257,000 34,000 148,000   -14,000 103,000 99,000 103,000 
          net (repayments) proceeds from short-term borrowings
                                     20,041,000                                                
          net repayments from short-term borrowings
                                                                                     
          stock-based compensation expense1
                                                                                     
          tax benefit from equity compensation plans1
                                                                                     
          income taxes payable1
                                                                                     
          stock-based compensation expense, net of tax impact from equity compensation plans
                                                                                     
          stock-based compensation expense, net of tax benefit from equity compensation plans
                                       1,605,000 421,000 908,000 -947,000 -130,000 445,000                                         
          net proceeds from short-term borrowings
                                         10,382,000 8,818,000                                           
          net repayments of short-term borrowings
                                        -9,382,000                                             
          deferred income tax
                                                3,395,000  22,233,000          305,000                         
          tax benefit from equity compensation plans
                                                -509,000 -2,935,000 245,000 318,000 499,000 1,584,000 157,000 408,000 477,000 1,260,000 227,000 419,000 709,000     47,000 1,056,000   676,000 435,000   349,000 137,000   899,000 233,000   210,000 1,339,000 3,760,000 1,307,000 
          notes receivable - long term
                                            475,000                                         
          notes receivable — long term
                                                                                     
          tax benefit from equity compensation plans, gross
                                              -643,000                                       
          prepaid income taxes
                                                -915,000    912,000    -1,007,000    -1,628,000 -3,335,000 3,335,000 405,000 731,000 -1,322,000 -494,000 4,659,000     1,239,000      -1,823,000  1,870,000   
          adjustments to reconcile net income to net cash from operatingactivities:
                                                                                     
          issuance of common stock in 2015 and 2014, respectively, pursuant to employee stock purchase plan
                                                  1,701,000                                 
          unrealized gains on deferred compensation fund investments
                                                   -117,000 -365,000                                 
          deferred income tax benefits
                                                    525,000          -585,000 -1,404,000 -1,001,000   -1,075,000 -419,000  -1,211,000 -624,000 -850,000             
          unrealized loss on marketable securities
                                                                109,000 125,000   234,000 191,000               
          deferred income benefits
                                                        3,075,000  -1,007,000                           
          issuance of common stock in 2014 and 2013, respectively, pursuant to employee stock purchase plan
                                                      1,851,000                             
          deferred income (benefits) tax
                                                                                     
          income taxes cash payments, net of refunds
                                                          6,392,000 2,008,000 6,523,000  7,634,000 6,930,000 2,852,000  4,757,000 6,372,000 311,000  5,260,000 6,244,000 4,103,000    5,064,000  819,000 5,064,000  109,000 6,180,000 4,328,000 
          issuance of common stock in 2013 and 2012, respectively, pursuant to employee stock plans
                                                          1,842,000                         
          issuance of common stock in 2012 and 2011, respectively, related to prior year acquisitions
                                                                                     
          issuance of common stock in 2012, 2011 and 2010, respectively, pursuant to employee stock plans
                                                                                     
          net cash provided (used) by investing activities
                                                              -911,000                       
          tax benefits arising from stock option transactions
                                                              238,000                       
          issuance of 70,000 and 76,000 shares in 2012 and 2011, respectively, of common stock pursuant to employee stock plans
                                                              1,250,000                     
          unrealized gain on marketable securities
                                                               26,000 56,000    145,000     84,000 -216,000 272,000 -645,000         
          unrealized (gain) on deferred compensation fund investments
                                                               360,000 -1,297,000    -429,000                 
          tax benefits transactions in equity compensation plans
                                                                294,000    27,000            2,369,000     
          repayment of debt assumed in acquisition
                                                                                   
          issuance of 27,000 and 99,000 shares of common stock related to acquisition in 2011 and 2009, respectively
                                                                                     
          issuance of 76,000, 73,000 and 73,000 shares of common stock in 2011, 2010 and 2009, respectively, pursuant to employee stock plans
                                                                                     
          change in deferred income taxes
                                                                                     
          notes receivable - long term portion
                                                                                     
          proceeds from disposals of fixed assets
                                                                  2,000                   
          net decrease in cash and cash equivalents
                                                                    -3,000,000      12,898,000           
          issuance of 76,000 and 73,000 shares in 2011 and 2010, respectively, of common stock pursuant to employee stock plans
                                                                  1,233,000                 
          notes receivable – long term portion
                                                                                     
          notes receivable — long term portion
                                                                    124,000  81,000 -1,085,000 -457,000         -11,000    
          acquisition of treasury stock
                                                                             14,000 -115,000 -3,805,000 -746,000     
          issuance of 99,000 shares of common stock related to acquisition in 2009
                                                                                     
          issuance of 73,000, 73,000 and 92,000 shares of common stock in 2010, 2009 and 2008, respectively, pursuant to employee stock plans
                                                                                     
          issuance of 66,000 shares of common stock related to acquisition in 2009
                                                                                     
          issuance of 49,000 shares of common stock in both 2010 and 2009 pursuant to employee stock plans
                                                                      1,047,000             
          unrealized (gain) loss on marketable securities
                                                                        597,000             
          tax benefits (expense) transactions in equity compensation plans
                                                                        708,000    -96,000         
          treasury stock transactions in benefit plans
                                                                                 904,000 -198,000 354,000 82,000 
          reissuance of treasury stock pursuant to dividend
                                                                                     
          reinvestment plan
                                                                                     
          cash and cash equivalents at beginning of the year
                                                                                     
          cash and cash equivalents at end of the year
                                                                                     
          issuance of 49,000, 61,000, and 65,000 shares of common stock in 2009, 2008 and 2007, respectively, pursuant to employee stock plans
                                                                                     
          reclassification of deferred compensation obligation pursuant to plan amendment
                                                                                 -706,000 146,000   
          issuance of 66,000 shares of common stock related to acquisition
                                                                                   
          notes receivable- long term portion
                                                                          1,072,000 -860,000 -2,404,000    -1,151,000   507,000 -221,000 
          cash payments for income taxes, net of refunds
                                                                          3,966,000           
          issuance of 49,000 shares of common stock in 2009 and 61,000 shares of common stock in 2008 pursuant to employee stock plans
                                                                          777,000         
          issuance of 61,000, 65,000, and 96,000 shares of common
                                                                                     
          stock in 2008, 2007 and 2006, respectively, pursuant to employee stock plans
                                                                                     
          issuance of 554,000 shares of common stock related to acquisition
                                                                                     
          deferred income taxes benefits
                                                                              -1,422,000   -604,000 1,597,000 -864,000 -888,000 
          issuance of 61,000 shares of common stock in 2008 and 65,000 shares of common stock in 2007 pursuant to employee stock plans
                                                                              1,293,000     
          notes receivable— long term portion
                                                                                     
          tax benefit of stock option transactions
                                                                                     
          issuance of 65,000, 96,000, and 135,000 shares of common
                                                                                     
          stock in 2007, 2006 and 2005, respectively, pursuant to employee stock plans
                                                                                     
          issuance of 554,000 shares of common stock related to
                                                                                     
          acquisition
                                                                                     
          issuance of 65,000 shares of common stock in 2007 and 96,000 shares of common stock in 2006 pursuant to employee stock plans
                                                                                     
          issuance of 43,000 shares of common stock in 2007 and 64,000 shares of common stock in 2006 pursuant to employee stock plans
                                                                                   1,254,000 
          notes receivable—long term portion
                                                                                     
          issuance of 64,000, 90,000, and 72,000 shares of common stock in 2006, 2005 and 2004, respectively, pursuant to employee stock plans
                                                                                     
          issuance of 369,000 shares of common stock related to acquisition
                                                                                     
          depreciation
                                                                                     
          repayments of debt assumed in acquisition
                                                                                     
          issuance of 64,000 shares of common stock in 2006 and 90,000 shares of common stock in 2005 pursuant to employee stock plans
                                                                                     
          adjustments to reconcile net income
                                                                                     
          to net cash from operating activities:
                                                                                     
          unrealized gain on deferred compensation
                                                                                     
          fund investments
                                                                                     
          notes receivable- long term
                                                                                     
          purchase of treasury stock
                                                                                     
          reissue of treasury stock pursuant to dividend
                                                                                     
          issuance of 48,224 shares of common stock in 2004 and 36,212 shares of common stock in 2003 pursuant to employee stock plans