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Stockholders' Equity (Details) - Equity Incentive Plan [Member]
3 Months Ended
Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected life 5 years 10 months 20 days
Weighted average volatility 71.00%
Forfeiture rate 20.00%
Weighted average risk-free interest rate 2.55%
Expected dividend rate 0.00%