INVESTMENT SECURITIES - Summary of Amortized Cost and Fair Value by Contractual Maturity (Detail) $ in Thousands	Dec. 31, 2024 USD ($)
Amortized Cost
Due in one year or less	$ 0
Due after one year through five years	42,402
Due after five years through ten years	51,758
Due after ten years	151,383
CMOs and MBSs	530,927
Asset-backed	88,450
Totals	864,920
Fair Value
Due in one year or less	0
Due after one year through five years	39,164
Due after five years through ten years	46,721
Due after ten years	137,407
CMOs and MBSs	518,316
Asset-backed	88,103
Totals	$ 829,711