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Notes Payable (Details) - Loan And Security Agreement [Member] - USD ($)
1 Months Ended
Nov. 30, 2015
Aug. 31, 2015
Debt Instrument [Line Items]    
Prepayment fee (as a percent) 1.00%  
Restricted cash for loan repayment   $ 8,300,000
Repayments of debt $ 6,600,000  
Gain on extinguishment of debt $ 61,000