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Term Loan (Details) - USD ($)
2 Months Ended 3 Months Ended
Jul. 28, 2017
Feb. 08, 2016
Feb. 05, 2016
Sep. 30, 2017
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Debt Instrument [Line Items]              
Term Loan, Net         $ 10,007,149   $ 10,599,795
Debt instrument, repayment of principal and unpaid interest         1,040,771 $ 614,165  
Interest expense         $ 692,787 1,322,715  
Hercules Capital, Inc. and Hercules Technology III, L.P. [Member]              
Debt Instrument [Line Items]              
Amount received under initial loan agreement   $ 25,000,000          
Debt instrument, interest rate     10.75%        
Debt instrument, maturity date         Aug. 01, 2018    
Debt instrument, minimum cash balance required to be maintained     $ 10,000,000        
Term Loan Principal         $ 8,945,592   9,986,362
End Fee Payable         1,771,250   1,771,250
Issuance Cost/Loan Discount         (709,693)   (1,157,817)
Term Loan, Net         10,007,149   $ 10,599,795
Debt instrument, repayment of principal and unpaid interest $ 5,000,000     $ 5,000,000      
Prepayment charge $ 100,000            
Second prepayment charge         $ 100,000    
Maturity date of amended loan servicing agreement         Aug. 01, 2018    
Percentage of stock issuable upon exercise of the warrants 80.00%            
Number of days to calculate volume-weighted average price of common stock         30 days    
Interest expense         $ 692,787 $ 1,322,715  
Warrants repriced in connection with the sale of licenses         77,000    
Additional loan discount         200,000    
Hercules Capital, Inc. and Hercules Technology III, L.P. [Member] | Warrants [Member]              
Debt Instrument [Line Items]              
Number of warrants issued (in shares)     105,691        
Warrants exercise price (in dollars per share) $ 4.62   $ 12.30        
Fair value of warrants classified as equity warrants         $ 633,749    
Hercules Capital, Inc. and Hercules Technology III, L.P. [Member] | Prime Rate [Member]              
Debt Instrument [Line Items]              
Debt instrument, basis spread on variable rate     6.00%