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Stockholders' Equity - Schedule of Weighted Average Assumptions (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]        
Weighted average risk-free rate 1.61% 1.16% 1.62% 1.20%
Weighted average volatility 114.33% 111.27% 114.70% 111.02%
Dividend yield 0.00% 0.00% 0.00% 0.00%
Expected life 7 years 4 months 17 days 6 years 3 months 15 days 7 years 2 months 30 days 6 years 2 months 1 day