Stock-Based Compensation (Details) - $ / shares |
6 Months Ended | |
---|---|---|
Jun. 30, 2017 |
Jun. 30, 2016 |
|
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Expected dividends | 0.00% | 0.00% |
Expected life of option | 7 years | |
Minimum [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Exercise price | $ 0.83 | $ 1.08 |
Expected volatility | 90.00% | 102.00% |
Risk free interest rate | 1.67% | 1.40% |
Expected life of option | 4 years 2 months 12 days | |
Maximum [Member] | ||
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
Exercise price | $ 0.87 | $ 2.66 |
Expected volatility | 92.00% | 117.00% |
Risk free interest rate | 1.75% | 1.57% |
Expected life of option | 4 years 3 months 18 days |