XML 68 R44.htm IDEA: XBRL DOCUMENT v3.19.3
Warrants (Details) - Warrant [Member]
9 Months Ended
Sep. 30, 2019
Summary of assumptions used to estimate fair value of stock warrants granted  
Expected dividend yield 0.00%
Expected volatility 90.00%
Risk-free interest rate 2.40%
Expected life of warrants 4 years