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Stockholders' Equity (Details 3)
3 Months Ended
Mar. 31, 2019
$ / shares
shares
Stockholders' Equity Note [Abstract]  
Warrants outstanding, beginning | shares 863,084
Warrants exercised | shares (277,778)
Warrants outstanding, ending | shares 585,306
Weighted average exercise price outstanding, beginning | $ / shares $ 6.00
Weighted average exercise price exercised | $ / shares 0.06
Weighted average exercise price outstanding, ending | $ / shares $ 8.85
Weighted average remaining contractual life, beginning 2 years 6 months 4 days
Weighted average remaining contractual life, ending 3 years 5 months 12 days