Quarterly report pursuant to Section 13 or 15(d)

WARRANTS - Additional Information (Details)

v3.21.2
WARRANTS - Additional Information (Details)
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 17, 2021
employee
$ / shares
shares
Nov. 20, 2020
shares
Oct. 15, 2020
USD ($)
shares
Jul. 22, 2019
$ / shares
shares
Jun. 05, 2019
$ / shares
shares
Jun. 29, 2018
$ / shares
shares
Oct. 16, 2015
$ / shares
shares
Sep. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
$ / shares
shares
Dec. 31, 2020
$ / shares
shares
Dec. 31, 2019
$ / shares
shares
Class of Warrant or Right [Line Items]                          
Proceeds for exercise of warrants | $                   $ 196,000 $ 0    
Warrants outstanding (in shares) 5,900,000                        
Number of shares of common stock entitled to be purchased by each warrant (in shares) 1                        
Common stock, par value (in usd per share) | $ / shares $ 11.50             $ 0.001   $ 0.001      
Weighted average remaining contractual term (years) 5 years                        
Warrants redemption price (in usd per share) | $ / shares $ 0.01                        
Warrants written notice of redemption threshold 30 days                        
Earnout stock price trigger (in usd per share) | $ / shares $ 18.00                        
Earnout period, threshold trading days | employee 20                        
Earnout period, threshold trading day period | employee 30                        
Earnout period, business days prior to notice of redemption 3 days                        
Class B Preferred Units                          
Class of Warrant or Right [Line Items]                          
Warrants issued (in shares)             211,000            
Warrants exercise price (in usd per share) | $ / shares             $ 1.00   $ 1.00   $ 1.00   $ 1.00
Number of warrants available to purchase, percent             5.00%            
Ownership threshold, percent             2.50%            
Warrants exercised (in shares)     211,000               0    
Proceeds for exercise of warrants | $     $ 1                    
Warrants, fair value | $     18,170,000                    
Loss on warrants exercised | $     $ 211,000                    
Expense (benefit) recognized | $                   $ 0 $ 1,780,000    
Warrants outstanding (in shares)                 211,000   211,000   211,000
Weighted average remaining contractual term (years)                     3 years 6 months 14 days   4 years 3 months 14 days
Class B-1 Preferred Units                          
Class of Warrant or Right [Line Items]                          
Warrants issued (in shares)       5,000 8,000                
Warrants exercise price (in usd per share) | $ / shares       $ 37.61 $ 37.61     $ 0 $ 37.61 $ 0 $ 37.61 $ 37.61 $ 37.61
Warrants exercised (in shares)                   0 0    
Expense (benefit) recognized | $                   $ 0 $ 0    
Warrants outstanding (in shares)               0 5,000 0 5,000 5,000 5,000
Weighted average remaining contractual term (years)                     3 years 9 months 21 days 3 years 6 months 21 days 4 years 6 months 21 days
Class C Profits Units                          
Class of Warrant or Right [Line Items]                          
Warrants issued (in shares)           144,000              
Warrants exercise price (in usd per share) | $ / shares           $ 37.605              
Common Stock                          
Class of Warrant or Right [Line Items]                          
Warrants issued (in shares)   971,000                      
Warrants exercise price (in usd per share) | $ / shares               $ 5.56 $ 5.56 $ 5.56 $ 5.56 $ 5.56 $ 5.56
Warrants exercised (in shares)                   0 0    
Expense (benefit) recognized | $               $ (6,800,000) $ 0 $ 8,200,000 $ 0    
Warrants outstanding (in shares)               971,000 971,000 971,000 971,000 971,000 971,000
Weighted average remaining contractual term (years)                   3 years 3 months 4 years 3 months 4 years 5 years
Public Warrants                          
Class of Warrant or Right [Line Items]                          
Warrants outstanding (in shares)               5,700,000   5,700,000      
Private warrants                          
Class of Warrant or Right [Line Items]                          
Warrants outstanding (in shares)               200,000   200,000