XML 47 R36.htm IDEA: XBRL DOCUMENT v3.21.2
CONVERTIBLE NOTES - Bridge Notes (Details) - USD ($)
3 Months Ended 9 Months Ended
Mar. 26, 2020
Mar. 25, 2020
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Debt Instrument [Line Items]              
Loss on extinguishment of convertible notes         $ (1,225,000)    
Conversion of convertible debt, plus interest, into common stock         $ 2,176,000    
Convertible notes       $ 0   $ 0  
April 2019 Bridge Notes And May 2019 Bridge Notes              
Debt Instrument [Line Items]              
Guaranteed interest period 18 months 12 months          
Convertible Debt [Member] | Convertible Bridge Loan              
Debt Instrument [Line Items]              
Debt discount             $ 1,796,000
Number of shares converted from debt instrument (in shares)     0   3,908,145    
Conversion of convertible debt, plus interest, into common stock     $ 0   $ 2,200,000    
Amendment Agreement | Convertible Debt [Member] | April 2019 Bridge Notes And May 2019 Bridge Notes              
Debt Instrument [Line Items]              
Loss on extinguishment of convertible notes       1,200,000      
Floor price $ 0.40 $ 2.25          
Debt premium on debt       $ 800,000