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Stockholders' Equity (Details 2) - Warrant [Member]
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected warrant life (years) 3 years 3 years
Risk-free weighted average interest rate 1.47% 1.37%
Stock price volatility 75.90% 68.20%
Dividend yield 0.00% 0.00%