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Accrued Liabilities Accrued Liabilities (Details) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Accrued Liabilities [Abstract]    
Salaries, employee benefits and related taxes $ 3,335,900us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent $ 2,807,200us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent
Professional fees 463,600us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent 495,400us-gaap_AccruedProfessionalFeesCurrentAndNoncurrent
Other 1,924,300us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent 1,020,300us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent
Accrued Liabilities $ 5,723,800us-gaap_AccruedLiabilitiesCurrentAndNoncurrent $ 4,322,900us-gaap_AccruedLiabilitiesCurrentAndNoncurrent