DERIVATIVE INSTRUMENTS - Amount and Market Value of Mortgage Banking Derivatives (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Gain (loss) on derivatives			$ (285)	$ (8,964)
Gain realized on sale of loans into securitization		$ 8,900
Notional Amount Assets	$ 72,104		72,104		$ 75,317
Derivatives asset, fair values	8,208		8,208		3,583
Notional Amount Liability	72,104		72,104		75,317
Derivatives liability, fair values	8,763		8,763		3,853
Interest rate swaps, Caps on loans, and Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Gain (loss) on derivatives	3	517	(285)	(9,300)
Notional Amount Assets	68,556		68,556		70,674
Derivatives asset, fair values	8,163		8,163		3,445
Notional Amount Liability	68,556		68,556		70,674
Derivatives liability, fair values	8,749		8,749		3,717
Interest rate swaps and caps on loans
Derivatives, Fair Value [Line Items]
Gain (loss) on derivatives		$ 603		$ 9,000
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Notional Amount Assets	3,548		3,548		4,643
Derivatives asset, fair values	45		45		138
Notional Amount Liability	3,548		3,548		4,643
Derivatives liability, fair values	$ 14		$ 14		$ 136

Nominal or face amount used to calculate payments on the derivative asset.

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