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Summary of Accrued Liabilities (Details) - USD ($)
Mar. 31, 2017
Dec. 31, 2016
Payables And Accruals [Abstract]    
Employee compensation and benefits $ 750,760 $ 1,088,773
Employee compensation for future absences 201,381 173,533
Interest 71,535 82,591
Professional fees 39,145 79,029
Other 219,126 246,360
Total accrued liabilities $ 1,281,947 $ 1,670,286