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Fair Value Measurements (Details) - Warrants
3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Risk-free interest rate 0.91% 0.70%
Expected volatility 55.00% 55.00%
Expected term 5 months 1 day 8 months 1 day
Expected dividend yield 0.00% 0.00%
Fair value of warrant liabilities valuation method Black Scholes Monte Carlo