Quarterly report pursuant to Section 13 or 15(d)

EQUITY-BASED COMPENSATION - Additional Information (Details)

v3.21.2
EQUITY-BASED COMPENSATION - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Weighted average grant-date fair value (in usd per share)     $ 11.41 $ 0    
Stock options exercised (in shares)     0 0    
RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expected annual dividend yield     0.00% 0.00%    
Equity-based compensation cost $ 9,200,000 $ 2,000,000 $ 9,700,000 $ 2,600,000    
Awards outstanding (in shares) 2,390,000 829,000 2,390,000 829,000 762,000 680,000
Awards granted (in shares)     2,353,000 1,937,000    
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expected annual dividend yield     0.00% 0.00%    
Equity-based compensation cost $ 583,000 $ 0 $ 1,300,000 $ 0    
PSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expected annual dividend yield     0.00% 0.00%    
Equity-based compensation cost $ 3,500,000 $ 0 $ 3,500,000 $ 0    
Awards outstanding (in shares) 424,000 0 424,000 0 0 0
Awards granted (in shares)     424,000 0    
2020 Equity Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares authorized (in shares) 8,280,000   8,280,000