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Stock-Based Compensation - Summary of Stock Option Activity (Details) - $ / shares
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Number of shares, options outstanding, at the beginning 6,850,000 3,150,000
Number of shares, granted 1,700,000 4,700,000
Number of shares, exercised
Number of shares, expired (600,000) (1,000,000)
Number of shares, options outstanding, at the end 7,950,000 6,850,000
Number of shares, options exercisable, at the beginning 4,675,000  
Number of shares, options exercisable, at the end 6,800,000 4,675,000
Weighted average exercise price, options outstanding, at the beginning $ 0.582 $ 0.818
Weighted average exercise price, granted $ 1.015 $ 0.473
Weighted average exercise price, exercised
Weighted average exercise price, expired $ 0.942 $ 0.803
Weighted average exercise price, options outstanding, at the end 0.697 0.582
Weighted average exercise price, options exercisable, at the beginning 0.626  
Weighted average exercise price, options exercisable, at the end $ 0.586 $ 0.626
Weighted average remaining contractual life (in years), options outstanding 2 years 11 months 9 days  
Weighted average remaining contractual life (in years), options exercisable 2 years 7 months 24 days