Quarterly report pursuant to Section 13 or 15(d)

Business Segment Information (Details)

v2.4.0.8
Business Segment Information (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
segment
region
Sep. 30, 2012
Dec. 31, 2012
Segment Reporting Information [Line Items]          
Number of reportable segments     4    
Number of U.S. regions reported in aggregate     4    
Income before taxes and unallocated corporate expenses $ 3,353,990 $ 6,311,328      
Total revenue 161,648,813 163,906,205 398,037,030 474,579,479  
Interest income 9,252 4,392 200,744 13,469  
Interest expense 1,205,341 1,162,943 3,230,475 3,301,273  
Depreciation and amortization of intangible assets 5,226,314 4,738,264 15,504,794 14,446,767  
Income (loss) before taxes 5,992,603 9,396,057 1,088,041 18,558,988  
Total assets 597,156,445 681,699,498 597,156,445 681,699,498 675,472,003
Capital expenditures 4,926,865 12,925,369 36,506,167 31,166,814  
U.S Federal [Member]
          
Segment Reporting Information [Line Items]          
Total revenue 19,259,566 16,193,420 45,196,541 59,382,736  
Depreciation and amortization of intangible assets 117,480 85,664 340,436 220,721  
Income (loss) before taxes 1,970,868 2,319,011 1,851,276 5,577,321  
Total assets 41,593,748 157,420,358 41,593,748 157,420,358  
Capital expenditures 31,956 244,672 398,757 945,626  
Central U.S Region [Member]
          
Segment Reporting Information [Line Items]          
Total revenue 23,735,134 23,954,729 54,293,581 66,675,906  
Depreciation and amortization of intangible assets 161,300 4,955 176,319 14,996  
Income (loss) before taxes 2,320,240 2,822,955 3,677,780 7,319,844  
Total assets 19,921,894 21,676,637 19,921,894 21,676,637  
Capital expenditures 0 0 72,297 0  
Other U.S Regions [Member]
          
Segment Reporting Information [Line Items]          
Total revenue 60,673,050 67,335,319 137,494,639 183,083,818  
Income (loss) before taxes 8,904,325 9,040,364 17,343,529 28,213,926  
Total assets 269,954,505 278,036,272 269,954,505 278,036,272  
Capital expenditures 424,235 1,455,735 1,246,105 2,654,946  
Canada [Member]
          
Segment Reporting Information [Line Items]          
Total revenue 20,059,253 16,141,540 49,844,725 44,407,228  
Interest income 8,657 0 34,232 2,754  
Interest expense 335,326 264,254 1,007,753 503,979  
Depreciation and amortization of intangible assets 198,981 149,753 584,612 350,534  
Income (loss) before taxes (127,377) 147,273 (2,061,367) (3,735,331)  
Total assets 52,726,154 69,962,338 52,726,154 69,962,338  
Capital expenditures 831,617 1,281,673 1,218,312 3,587,951  
All Other [Member]
          
Segment Reporting Information [Line Items]          
Number of U.S. regions reported in aggregate     4    
Income before taxes and unallocated corporate expenses     14,017,019 15,082,850  
Total revenue 37,921,810 40,281,197 111,207,544 121,029,791  
Interest income 595 4,392 166,512 10,715  
Interest expense 870,015 898,689 2,222,722 2,797,294  
Depreciation and amortization of intangible assets 4,748,553 4,497,892 14,403,427 13,860,516  
Income (loss) before taxes (7,075,453) (4,933,546) (19,723,177) (18,816,772)  
Total assets 212,960,144 154,603,893 212,960,144 154,603,893  
Capital expenditures 3,639,057 9,943,289 33,570,696 23,978,291  
Unallocated Amount to Segment [Member]
          
Segment Reporting Information [Line Items]          
Unallocated corporate expenses 10,429,443 11,244,873      
Indirect expenses     $ 33,740,196 $ 33,899,622