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Other Comprehensive Income (Loss) - Components of Other Comprehensive Income (loss) Pre-Tax and After-Tax (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
After-tax |  |
Other comprehensive income (loss) | $ 13,791 | $ (42,910)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent |  |
Pre-tax |  |
Unrealized holding gains (losses) arising during the period | 17,593 | (57,161)
Less: Reclassification adjustments for (gains) losses realized in net income (loss) | 701 | 264
Other comprehensive income (loss) | 18,294 | (56,897)
Tax |  |
Unrealized holding gains (losses) arising during the period | 4,330 | (14,052)
Less: Reclassification adjustments for (gains) losses realized in net income (loss) | 173 | 65
Other comprehensive income (loss) | 4,503 | (13,987)
After-tax |  |
Unrealized holding gains (losses) arising during the period | 13,263 | (43,109)
Less: Reclassification adjustments for (gains) losses realized in net income (loss) | 528 | 199
Other comprehensive income (loss) | $ 13,791 | $ (42,910)

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