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Accounts Payable and Accrued Expenses (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Payables and Accruals [Abstract]    
Trade accounts payable $ 4,292,374 $ 2,003,091
Accrued compensation 4,157,440 2,982,090
Accrued license fees 2,300,000 0
Other accrued expenses 2,315,085 1,397,989
Accounts payable and accrued liabilities $ 13,064,899 $ 6,383,170