DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Statement of Changes in Level 3 Assets Measured at Fair Value on a Recurring Basis (Detail) - Significant Unobservable Inputs (Level 3) - Asset-backed securities - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Asset-backed securities
Balance at beginning of period	$ 228,698	$ 21,862	$ 13,236	$ 34,949
Purchases	85,776	0	322,032	0
Principal payments and premium amortization	(34,242)	(5,704)	(55,241)	(19,652)
Increase in allowance for credit losses	(19)	(24)	(485)	(24)
Decrease in allowance for credit losses	407	84	651	200
Change in fair value recognized in OCI	1,219	607	1,646	1,352
Balance at end of period	$ 281,839	$ 16,825	$ 281,839	$ 16,825