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NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Weighted-Averages of Key Economic Assumptions in Valuation Model (Detail) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Jun. 30, 2022
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Transfers and Servicing [Abstract]            
Carrying amount of servicing assets $ 29,690 $ 30,986 $ 30,277 $ 31,685 $ 32,335 $ 33,071
Fair value $ 44,621 $ 42,132        
Weighted-average expected life 7 years 10 months 9 days 7 years 11 months 15 days        
Constant prepayment rate 6.45% 6.55%        
Decrease in fair value due to 10% adverse change $ 1,048 $ 1,027        
Decrease in fair value due to 20% adverse change $ 2,052 $ 2,011        
Discount rate 10.68% 11.17%        
Decrease in fair value due to 10% adverse change $ 1,923 $ 1,852        
Decrease in fair value due to 20% adverse change $ 3,700 $ 3,561