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EQUITY-BASED COMPENSATION - Additional Information (Details) - USD ($)
3 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
May 31, 2021
May 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Income tax (expense) benefits related to equity-based compensation $ 47,000 $ 27,000      
Granted, weighted average grant date fair value (in USD per share) $ 12.12        
Unrecognized compensation expense related to unvested options at end of period $ 31,271,000        
Period for recognition of unrecognized compensation cost 1 year 9 months 10 days        
Fair value of stock options that vested $ 7,022,000        
Restricted stock units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Period for recognition of unrecognized compensation cost 3 years 6 months 18 days        
Cost not yet recognized, amount $ 7,373,000        
Vested in period, fair value $ 0        
2018 Equity Incentive Award Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for grant under the plan (in shares) 434,500       3,500,000
Additional Class A common shares added at the beginning of calendar year as percentage of common stock outstanding at end of previous year (percent)         4.00%
2020 Equity Incentive Award Plan          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares available for grant under the plan (in shares) 1,035,338   1,500,000 3,000,000