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Other Comprehensive Income - Summary of Components of OCI (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023
Equity [Abstract] |  |
Net change in fair value recorded in accumulated OCI, Before-tax | $ (35,856) | $ 40,424
Net change in fair value recorded in accumulated OCI, Tax effect | 10,600 | (11,951)
Net change in fair value recorded in accumulated OCI, After-tax | (25,256) | 28,473
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity, Before-tax | 163 | 278
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity, Tax effect | (48) | (82)
Amortization of net unrealized losses on securities transferred from available-for-sale to held-to-maturity, After-tax | 115 | 196
Fair value hedges: Net change in fair value recorded in accumulated OCI, Before-tax | 17,831 | 0
Fair value hedges: Net change in fair value recorded in accumulated OCI, Tax effect | (4,962) | 0
Other Comprehensive Income (Loss), Fair Value Hedge, Gain (Loss), after Tax, Total | 12,869 | 0
Cash flow hedges: Net change in fair value recorded in accumulated OCI, Before-tax | 789 | 0
Cash flow hedges: Net change in fair value recorded in accumulated OCI, Tax effect | (233) | 0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax, Total | 556 | 0
Net change, Before-tax | (17,073) | 40,702
Net change, Tax effect | 5,357 | (12,033)
Other comprehensive (loss), net of tax | $ (11,716) | $ 28,669

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