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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Cumulative Basis Adjustment for Fair Value Hedges (Detail) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
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AFS debt securities |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Amortized Cost | $ 0 | $ 10,000
Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items | 0 | 0
Deposits |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Amortized Cost | 1,815,082 | 1,794,923
Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items | 13,511 | (6,042)
FHLB advances |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Amortized Cost | 1,200,000 | 1,200,000
Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items | $ 3,456 | $ (1,648)

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