Quarterly report pursuant to Section 13 or 15(d)

WARRANTS - Class B-1 Warrant Activity (Details)

v3.21.2
WARRANTS - Class B-1 Warrant Activity (Details) - $ / shares
9 Months Ended 12 Months Ended
Mar. 17, 2021
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Number of warrants          
Ending balance, Number of warrants (in shares) 5,900,000        
Additional disclosures          
Weighted average remaining contractual term (years) 5 years        
Class B-1 Preferred Units          
Number of warrants          
Beginning balance, Number of warrants (in shares)   5,000 5,000 5,000  
Granted, Number of warrants (in shares)   0 0    
Exercised, Number of warrants (in shares)   0 0    
Cancelled, Number of warrants (in shares)   (5,000)      
Ending balance, Number of warrants (in shares)   0 5,000 5,000 5,000
Exercisable, Number of warrants (in shares)   0      
Weighted average exercise price          
Beginning balance, Weighted average exercise price (in usd per share)   $ 37.61 $ 37.61 $ 37.61  
Granted, Weighted average exercise price (in usd per share)   0 0    
Exercised, Weighted average exercise price (in usd per share)   0 0    
Cancelled, Weighted average exercise price (in usd per share)   37.61      
Ending balance, Weighted average exercise price (in usd per share)   0 37.61 37.61 $ 37.61
Weighted average grant date fair value          
Beginning balance, Weighted average grant date fair value (in usd per share)   15.52 15.52 15.52  
Granted, Weighted average grant date fair value (in usd per share)   0 0    
Exercised, Weighted average grant date fair value (in usd per share)   0 0    
Cancelled, Weighted average grant date fair value (in usd per share)   15.52      
Ending balance, Weighted average grant date fair value (in usd per share)   $ 0 $ 15.52 $ 15.52 $ 15.52
Additional disclosures          
Weighted average remaining contractual term (years)     3 years 9 months 21 days 3 years 6 months 21 days 4 years 6 months 21 days
Weighted average remaining contractual term, cancelled (years)   3 years 6 months 21 days