Quarterly report pursuant to Section 13 or 15(d)

Term Loan - Additional Information (Details)

v3.8.0.1
Term Loan - Additional Information (Details) - Secured term loan - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2014
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Aug. 01, 2017
Term Loan            
Secured term loan face amount $ 7,500,000.0          
Final term loan payment       $ 494,231    
Term loan termination fee           $ 187,500
Interest expense including amortization of discount and accrual of termination fee   $ 1,000 $ 110,000 $ 95,000 $ 404,000  
Term loan | Prime rate            
Term Loan            
Margin on interest rate 3.25%          
Term loan | Minimum            
Term Loan            
Interest rate 7.95%          
Term loan | Maximum            
Term Loan            
Interest rate 7.95%