XML 61 R46.htm IDEA: XBRL DOCUMENT v3.20.1
LONG-TERM DEBT - Estimated fair value of warrants (Details) - Warrant [Member]
3 Months Ended
Mar. 31, 2020
$ / shares
Measurement Input, Exercise Price [Member]  
Exercise Price $ 4.08
Measurement Input, Share Price [Member]  
Common share price on date of issuance $ 6.80
Measurement Input, Price Volatility [Member]  
Volatility 195.90%
Measurement Input, Risk Free Interest Rate [Member]  
Risk-free interest rate 2.63%
Measurement Input, Expected Term [Member]  
Warrants, contractual term 7 years