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Redeemable Convertible Preferred Stock (Details) - Fair Value, Inputs, Level 3 [Member]
9 Months Ended
Sep. 30, 2015
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]  
Expected life of the redemption in years 1 year
Risk free interest rate 0.33%
Expected annual volatility 93.19%
Annual rate of dividends 0.00%