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Accumulated Other Comprehensive (Loss) Income (Schedule of Changes In Each Component of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning Balance | $ 636,192 | $ 591,993 | $ 578,027 | $ 681,105
Other comprehensive loss | (36,700) | (61,499) |  |
Amounts reclassified from other comprehensive income | 555 |  | (33) |
Other comprehensive (loss) income, net of tax | (36,145) | (61,499) | (35,105) | (159,742)
Ending balance | 610,134 | 548,288 | 610,134 | 548,288
Defined Benefit Pension Plans |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning Balance | (3,422) | (3,485) | (3,422) | (3,485)
Other comprehensive loss | 0 | 0 | 0 | 0
Amounts reclassified from other comprehensive income | 0 |  | 0 |
Other comprehensive (loss) income, net of tax | 0 | 0 | 0 | 0
Ending balance | (3,422) | (3,485) | (3,422) | (3,485)
Securities available-for-sale: |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning Balance | (127,026) | (80,498) | (128,066) | 17,745
Other comprehensive loss | (36,700) | (61,499) | (35,072) | (159,742)
Amounts reclassified from other comprehensive income | 555 |  | (33) |
Other comprehensive (loss) income, net of tax | (36,145) | (61,499) | (35,105) | (159,742)
Ending balance | (163,171) | (141,997) | (163,171) | (141,997)
Total |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Beginning Balance | (130,448) | (83,983) | (131,488) | 14,260
Other comprehensive loss |  |  | (35,072) | (159,742)
Other comprehensive (loss) income, net of tax | (36,145) | (61,499) | (35,105) | (159,742)
Ending balance | $ (166,593) | $ (145,482) | $ (166,593) | $ (145,482)

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