Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets - Goodwill (Details)

v2.4.0.6
Goodwill and Intangible Assets - Goodwill (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2012
Goodwill [Line Items]    
Acquisitions $ 0 $ 0
Goodwill [Roll Forward]    
December 31, 2011   47,881,346
Foreign Currency Translation and Other Adjustments   (3,216)
June 30, 2012 47,878,130 47,878,130
U.S Federal [Member]
    
Goodwill [Roll Forward]    
December 31, 2011   3,374,967
Foreign Currency Translation and Other Adjustments   0
June 30, 2012 3,374,967 3,374,967
Central U.S Region [Member]
    
Goodwill [Roll Forward]    
December 31, 2011   1,972,415
Foreign Currency Translation and Other Adjustments   0
June 30, 2012 1,972,415 1,972,415
Other U.S Regions [Member]
    
Goodwill [Roll Forward]    
December 31, 2011   21,736,140
Foreign Currency Translation and Other Adjustments   0
June 30, 2012 21,736,140 21,736,140
Canada [Member]
    
Goodwill [Roll Forward]    
December 31, 2011   2,874,383
Foreign Currency Translation and Other Adjustments   (3,216)
June 30, 2012 2,871,167 2,871,167
All Other [Member]
    
Goodwill [Roll Forward]    
December 31, 2011   17,923,441
Foreign Currency Translation and Other Adjustments   0
June 30, 2012 $ 17,923,441 $ 17,923,441