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Fair Value of Financial Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2017
Jun. 30, 2017
Sep. 30, 2016
Debt Instrument [Line Items]      
Derivative Liability, Current $ 253 $ 253 $ 204
Charge (benefit) from revaluation of warrant liability $ (3) $ 49  
Wynnefiled Capital, Bank Term Loan      
Debt Instrument [Line Items]      
Class of Warrant or Right, Outstanding   53,619