XML 43 R32.htm IDEA: XBRL DOCUMENT v3.19.1
Warrant Liabilities - Schedule of Weighted-average Assumptions (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Risk-free interest rate 0.00% 2.42%
Expected dividend yield 0.00% 0.00%
Expected lives 0 years 6 years
Expected volatility 0.00% 91.60%
Gain on warrant liabilities $ 453,412
Warrants [Member]    
Risk-free interest rate 1.83%
Expected dividend yield 0.00%
Expected lives 0 years 3 months 19 days
Expected volatility 76.70%
Number of warrants classified as liabilities 2,834,246
Gain on warrant liabilities $ 453,412