NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Weighted-Averages of Key Economic Assumptions in Valuation Model (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Transfers and Servicing [Abstract]
Carrying amount of servicing assets	$ 30,986	$ 33,071	$ 26,762	$ 27,428
Fair value	$ 42,132	$ 40,294
Weighted-average expected life	7 years 11 months 15 days	7 years 10 months 9 days
Constant prepayment rate	6.55%	6.73%
Decrease in fair value due to 10% adverse change	$ 1,027	$ 1,006
Decrease in fair value due to 20% adverse change	$ 2,011	$ 1,970
Discount rate	11.17%	11.20%
Decrease in fair value due to 10% adverse change	$ 1,852	$ 1,772
Decrease in fair value due to 20% adverse change	$ 3,561	$ 3,409