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Accounts Payable and Accrued Expenses (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Payables and Accruals [Abstract]    
Trade accounts payable $ 2,003,091us-gaap_AccountsPayableTradeCurrentAndNoncurrent $ 1,865,723us-gaap_AccountsPayableTradeCurrentAndNoncurrent
Accrued compensation 2,982,090us-gaap_AccruedSalariesCurrent 2,586,806us-gaap_AccruedSalariesCurrent
Other accrued expenses 1,397,989us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent 991,979us-gaap_OtherAccruedLiabilitiesCurrentAndNoncurrent
Accounts payable and accrued liabilities $ 6,383,170us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent $ 5,444,508us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent