INCOME TAXES - Significant components of deferred tax assets and liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred Tax Assets [Abstract]
NOL and capital loss carryforward	$ 48,633	$ 72,485
Allowance for credit losses	102,005	104,014
Alternative Minimum Tax credits available for carryforwards	39,898	40,823
Unrealized loss on OREO valuation	6,360	6,462
Settlement payment - closing agreement	0	7,031
Legal and other reserves	4,059	6,345
Reserve for insurance premium cancellations	824	781
Differences between the assigned values and tax bases of assets and liabilities recognized in purchase business combinations	6,690	5,665
Unrealized loss on available-for-sale securities, net	82,944	100,776
Other	7,833	7,722
Total gross deferred tax asset	299,246	352,104
Deferred Tax Liabilities [Abstract]
Servicing assets	9,002	9,786
Pension plan assets	832	719
Other	97	509
Total gross deferred tax liabilities	9,931	11,014
Valuation allowance	(139,188)	(185,506)
Net deferred tax asset	$ 150,127	$ 155,584