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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
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Transfers and Servicing [Abstract]        
Carrying amount of servicing assets $ 30,753 $ 30,986 $ 32,710 $ 33,071
Fair value $ 43,037 $ 42,132    
Weighted-average expected life 7 years 11 months 19 days 7 years 11 months 15 days    
Constant prepayment rate 6.59% 6.55%    
Decrease in fair value due to 10% adverse change $ 1,051 $ 1,027    
Decrease in fair value due to 20% adverse change $ 2,057 $ 2,011    
Discount rate 11.17% 11.17%    
Decrease in fair value due to 10% adverse change $ 1,911 $ 1,852    
Decrease in fair value due to 20% adverse change $ 3,671 $ 3,561