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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

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Principal Payments and Premium Amortization + References No definition available. + Details
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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Decrease In Allowance for Credit Losses + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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