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DERIVATIVE INSTRUMENTS - Amount and Market Value of Mortgage Banking Derivatives (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Derivatives, Fair Value [Line Items]
Gain (loss) on derivatives	$ 271	$ (182)
Notional Amount Assets	71,558		$ 74,850
Derivatives asset, fair values	4,707		7,632
Notional Amount Liability	71,558		74,850
Derivatives liability, fair values	4,906		8,102
Interest rate swaps and caps on loans
Derivatives, Fair Value [Line Items]
Gain (loss) on derivatives	271	$ (182)
Notional Amount Assets	64,911		67,840
Derivatives asset, fair values	4,452		7,304
Notional Amount Liability	64,911		67,840
Derivatives liability, fair values	4,663		7,789
Foreign exchange contracts
Derivatives, Fair Value [Line Items]
Notional Amount Assets	6,647		7,010
Derivatives asset, fair values	255		328
Notional Amount Liability	6,647		7,010
Derivatives liability, fair values	$ 243		$ 313

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