BORROWINGS - Schedule of Subordinated Borrowing (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Mar. 15, 2022	Dec. 31, 2021	Nov. 05, 2019
Subordinated Borrowing [Line Items]
Long-term borrowings	$ 370,205		$ 172,712
Subordinated Debt
Subordinated Borrowing [Line Items]
Subordinated debt, gross	375,000		175,000
Less: Debt issuance costs	(4,795)		(2,288)
Subordinated Debt | Fixed Floating Rate Subordinated Notes Due 2032
Subordinated Borrowing [Line Items]
Subordinated debt, gross	$ 200,000		0
Long-term borrowings		$ 200,000
Interest rate	3.875%	3.875%
Subordinated Debt | Fixed Floating Rate Subordinated Notes Due 2029
Subordinated Borrowing [Line Items]
Subordinated debt, gross	$ 175,000		$ 175,000
Long-term borrowings				$ 175,000
Interest rate	4.25%			4.25%