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Accumulated Other Comprehensive Income (Loss) - Activity in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Other comprehensive income (loss) before reclassification | $ 306 |  |
Balance at beginning of period | (35,973) |  |
Balance at end of period | (29,058) | $ (35,973) |
Balance at beginning of period | 637,515 | 643,417 | $ 577,044
Other comprehensive income (loss), net of tax | 17,057 | (80,542) | (11,519)
Balance at end of period | 701,891 | 637,515 | 643,417
Unrealized Gains and Losses on Available for Sale Securities |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Balance at beginning of period | (124,958) | (11,864) | 4,323
Other comprehensive income (loss) before reclassification | 21,795 | (113,094) | (16,686)
Reclassification from accumulated other comprehensive income | 1,871 |  | 499
Net current period other comprehensive income | 23,666 | (113,094) | (16,187)
Balance at end of period | (101,292) | (124,958) | (11,864)
Unrealized Gains and Losses on Cash Flow Hedge |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Other comprehensive income (loss) before reclassification | 306 |  |
Net current period other comprehensive income | 306 |  |
Balance at end of period | 306 |  |
Tax Benefit (Expense) |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Balance at beginning of period | 35,973 | 3,421 | (1,247)
Other comprehensive income (loss) before reclassification | (6,351) | 32,552 | 4,668
Reclassification from accumulated other comprehensive income | (564) |  |
Net current period other comprehensive income | (6,915) | 32,552 | 4,668
Balance at end of period | 29,058 | 35,973 | 3,421
Accumulated Other Comprehensive Income (Loss) |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |
Balance at beginning of period | (88,985) | (8,443) | 3,076
Other comprehensive income (loss) before reclassification | 15,750 | (80,542) | (12,018)
Reclassification from accumulated other comprehensive income | 1,307 |  | 499
Other comprehensive income (loss), net of tax | 17,057 | (80,542) | (11,519)
Balance at end of period | $ (71,928) | $ (88,985) | $ (8,443)

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