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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2023
After-tax |  |  |  |  |  |
Other comprehensive income (loss) | $ 996 | $ (2,542) | $ (5,866) | $ 13,791 | $ (1,546) | $ 7,925
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent |  |  |  |  |  |
Pre-tax |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | 1,395 |  | (7,803) |  | (2,047) | 9,790
Less: Reclassification adjustments for (gains) losses realized in net income (loss) | (73) |  | 21 |  | (4) | 722
Other comprehensive income (loss) | 1,322 |  | (7,782) |  | (2,051) | 10,512
Tax |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | 344 |  | (1,920) |  | (504) | 2,410
Less: Reclassification adjustments for (gains) losses realized in net income (loss) | (18) |  | 4 |  | (1) | 177
Other comprehensive income (loss) | 326 |  | (1,916) |  | (505) | 2,587
After-tax |  |  |  |  |  |
Unrealized holding gains (losses) arising during the period | 1,051 |  | (5,883) |  | (1,543) | 7,380
Less: Reclassification adjustments for (gains) losses realized in net income (loss) | (55) |  | 17 |  | (3) | 545
Other comprehensive income (loss) | $ 996 |  | $ (5,866) |  | $ (1,546) | $ 7,925

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