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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Cumulative Basis Adjustment for Fair Value Hedges (Detail) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
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AFS debt securities |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Amortized Cost | $ 22,500 | $ 22,500
Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items | 508 | 941
Deposits |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Amortized Cost | 1,183,063 | 300,000
Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items | (939) | 1,432
FHLB advances |  |
Derivative Instruments and Hedging Activities Disclosures [Line Items] |  |
Amortized Cost | 1,200,000 | 700,000
Cumulative Amount of Fair Value Hedging Adjustment to Hedged Items | $ (6,651) | $ 3,206

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