INVESTMENTS - Narrative (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Accrued interest receivable	$ 45,627	$ 46,583
Book value of debt securities pledged as collateral	1,470,068	1,456,984
Asset Pledged as Collateral | Deposits
Schedule of Investments [Line Items]
Book value of debt securities pledged as collateral	468,900	729,000
Collateralized mortgage obligations
Schedule of Investments [Line Items]
Mortgage-backed securities	505,100
Mortgage-backed securities
Schedule of Investments [Line Items]
Mortgage-backed securities	557,600
SBA asset-backed securities
Schedule of Investments [Line Items]
Mortgage-backed securities	41,200
Investment Securities
Schedule of Investments [Line Items]
Accrued interest receivable	$ 5,300	$ 5,400