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Other Comprehensive Income (Loss) - Schedule of Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | $ 657,492 | $ 709,936 | $ 728,941 | $ 717,689
Other comprehensive (loss) income before reclassifications | (43,449) | 8,489 | (123,854) | (16,757)
Amounts reclassified from accumulated other comprehensive (loss) income | 429 | 579 | 935 | 949
Other comprehensive (loss) income | (43,020) | 9,068 | (122,919) | (15,808)
Ending balances | 624,318 | 728,253 | 624,318 | 728,253
Available-for- Sale Debt Securities |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | (94,965) | (4,886) | (14,560) | 20,609
Other comprehensive (loss) income before reclassifications | (43,449) | 8,489 | (123,854) | (16,757)
Amounts reclassified from accumulated other comprehensive (loss) income | 0 | 0 | 0 | (249)
Other comprehensive (loss) income | (43,449) | 8,489 | (123,854) | (17,006)
Ending balances | (138,414) | 3,603 | (138,414) | 3,603
Employee Benefit Plans |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | (40,884) | (52,064) | (41,390) | (52,683)
Other comprehensive (loss) income before reclassifications | 0 | 0 | 0 | 0
Amounts reclassified from accumulated other comprehensive (loss) income | 429 | 579 | 935 | 1,198
Other comprehensive (loss) income | 429 | 579 | 935 | 1,198
Ending balances | (40,455) | (51,485) | (40,455) | (51,485)
Accumulated Other Comprehensive (Loss) Income |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning balances | (135,849) | (56,950) | (55,950) | (32,074)
Other comprehensive (loss) income | (43,020) | 9,068 | (122,919) | (15,808)
Ending balances | $ (178,869) | $ (47,882) | $ (178,869) | $ (47,882)

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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