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Accounts Payable and Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2016
Payables and Accruals [Abstract]  
Schedule of accounts payable and accrued expenses
Accounts payable and accrued expenses at December 31, 2016 and 2015 consist of the following:
 
 
As of December 31,
 
2016
 
2015
Trade accounts payable, including from affiliated entity
$
5,920,642

 
$
4,292,374

Accrued compensation
6,531,983

 
4,157,440

Accrued subcontract costs
5,475,359

 
946,597

Accrued license fees

 
2,300,000

Other accrued expenses
1,669,803

 
1,368,488

 
$
19,597,787

 
$
13,064,899