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Notes Payable (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Mar. 31, 2015
Aug. 27, 2014
Sep. 30, 2015
Sep. 30, 2014
Line of Credit Facility        
Proceeds from Issuance of Promissory notes     $ 5,000 $ 5,000
Debt Instruments        
Number of shares after conversion of warrants     24,566  
Exercise price of warrants (in dollars per share)     $ 12.14  
Term Loan B        
Line of Credit Facility        
Proceeds from Issuance of Promissory notes $ 5,000      
Term Loan A        
Line of Credit Facility        
Maximum borrowing capacity 5,000      
Proceeds from Issuance of Promissory notes   $ 5,000    
Other Term Loan        
Line of Credit Facility        
Maximum borrowing capacity 20,000      
Credit Facility        
Line of Credit Facility        
Total borrowings     $ 10,000  
Maximum borrowing capacity $ 25,000      
Number of monthly payments (in number of payments)     36  
Interest rate (as a percent)     7.49%  
Percentage of amount outstanding due as a payment (as a percent)     3.48%  
Effective interest rate (as a percent)     11.20%  
Debt Instruments        
Financial covenants     0  
Final judgment amount that would trigger lender rights for remedy     $ 250,000  
Interest rate increase in the event of a default (as a percent)     5.00%  
Minimum | Credit Facility        
Line of Credit Facility        
Percentage of amount outstanding due as a payment (as a percent)     1.00%  
Maximum | Credit Facility        
Line of Credit Facility        
Percentage of amount outstanding due as a payment (as a percent)     3.00%  
Warrant Liability        
Debt Instruments        
Exercise period     7 years  
2014 Warrants        
Debt Instruments        
Value of warrants     $ 100  
Debt discount     $ 100  
2014 Warrants | Term Loan A        
Debt Instruments        
Number of shares after conversion of warrants     157,844  
Exercise price of warrants (in dollars per share)     $ 0.9503  
2015 Warrants        
Debt Instruments        
Value of warrants     $ 100  
Debt discount     $ 100  
2015 Warrants | Term Loan B        
Debt Instruments        
Number of shares after conversion of warrants     157,844  
Exercise price of warrants (in dollars per share)     $ 0.9503