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Long-Term Related Party Payable - Warrant Fair Value Assumptions (Details) - Warrant - $ / shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Schedule of Capitalization, Long-term Debt [Line Items]    
Weighted average exercise price per share $ 8.63 $ 8.63
Expected term (years) 1 year 3 months 2 years 3 months
Expected volatility 54.20% 64.54%
Risk-free interest rate 0.94% 0.93%
Expected dividend yield 0.00% 0.00%