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Long-term Debt (Details) - USD ($)
 3 Months Ended 9 Months Ended
May 29, 2015
Jun. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Jun. 15, 2016
May 10, 2016
Mar. 31, 2016
Debt Instrument [Line Items]              
Number of shares callable by warrants (in shares)         1 1,100,000 16,000,000
Warrant exercise price (in dollars per share)         $ 3.06    
Repayment of long term debt     $ 0 $ 25,032,000      
Loss on debt extinguishment     $ 0 $ (260,000)      
LIBOR [Member] | Interest Rate Floor [Member]              
Debt Instrument [Line Items]              
Basis variable rate 1.00%            
Term Loan [Member]              
Debt Instrument [Line Items]              
Origination date     May 29, 2015        
Original loan amount $ 17,700,000            
Basis variable rate 7.95%            
Maturity date     Jun. 01, 2019        
Fees amount associated with loan $ 1,100,000            
Date from which warrants are exercisable     Nov. 30, 2015        
Number of shares callable by warrants (in shares) 94,441            
Warrant exercise price (in dollars per share) $ 10.35            
Warrant expiration date     May 29, 2025        
Repayment of long term debt $ 25,400,000            
Term Loan remaining balance at date of Amendment 23,400,000            
Accrued but unpaid interest 200,000            
Final payment fee 1,800,000            
Principal amount of previous loan retired 3,100,000            
Unamortized debt discount $ 800,000            
Loss on debt extinguishment   $ 300,000          
Effective interest rate 14.95%            
Minimum liquidity covenant $ 5,000,000            
Debt instrument, covenant compliance     we were in compliance with the debt covenants        
Term Loan [Member] | Final Payment [Member]              
Debt Instrument [Line Items]              
Fees amount associated with loan $ 800,000            
Minimum | Term Loan [Member]              
Debt Instrument [Line Items]              
Interest rate 8.95%