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Warrants - Additional Information (Details) - USD ($)
9 Months Ended
Dec. 02, 2016
Sep. 30, 2016
Sep. 30, 2015
Class Of Warrant Or Right [Line Items]      
Warrants to purchase common stock   3,999,998  
Purchase price per share   $ 0.0045  
Warrants expiration duration   8 years  
Expense recognized for warrants performance criteria.   $ 70,000 $ 0
Subsequent Event      
Class Of Warrant Or Right [Line Items]      
Accelerated recognition of remaining warrant expense $ 279,000