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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |  |
Beginning Balance |  |  | $ (171,096) |  |  |  | $ (171,096) |
Debt Securities, Available-for-Sale, Realized Loss | $ 0 |  |  | $ 0 |  |  | (197) | $ 0
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities | (2,147) |  |  | (2,327) |  |  | (6,329) | (6,883)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 25,609 |  |  | (13,592) |  |  | (639) | (33,976)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax | 4,705 |  |  | 4,516 |  |  | 14,297 | 9,097
Labor and Related Expense | (121,036) |  |  | (117,159) |  |  | (362,012) | (347,669)
Other Comprehensive Income (Loss), Net of Tax | 107,466 | $ (9,333) | (38,785) | (47,497) | $ (58,054) | $ 39,211 | 59,348 | (66,340)
Ending Balance | (111,748) |  |  |  |  |  | (111,748) |
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |  |
Beginning Balance | (176,139) |  | (148,641) | (239,273) |  | (233,192) | (148,641) | (233,192)
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 90,858 |  |  | (56,924) |  |  | 49,844 | (69,512)
Debt Securities, Available-for-Sale, Realized Loss |  |  |  |  |  |  | 197 |
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities | 2,147 |  |  | 2,327 |  |  | 6,329 | 6,883
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 0 |  |  | 0 |  |  | 0 | 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax | 0 |  |  | 0 |  |  | 0 | 0
Labor and Related Expense | 0 |  |  | 0 |  |  | 0 | 0
Other Expenses | 0 |  |  | 0 |  |  | 0 | 0
Other Comprehensive Income (Loss), Tax | (23,198) |  |  | 13,928 |  |  | (14,060) | 15,879
Other Comprehensive Income (Loss), Net of Tax | 69,807 |  |  | (40,669) |  |  | 42,309 | (46,751)
Ending Balance | (106,332) | (176,139) |  | (279,943) | (239,273) |  | (106,332) | (279,943)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |  |
Beginning Balance | (15,768) |  | 3,080 | (9,270) |  | 3,360 | 3,080 | 3,360
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 0 |  |  | 0 |  |  | 0 | 0
Debt Securities, Available-for-Sale, Realized Loss |  |  |  |  |  |  | 0 |
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities | 0 |  |  | 0 |  |  | 0 | 0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 25,609 |  |  | (13,592) |  |  | (639) | (33,976)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax | 4,705 |  |  | 4,516 |  |  | 14,297 | 9,097
Labor and Related Expense | 0 |  |  | 0 |  |  | 0 | 0
Other Expenses | 0 |  |  | 0 |  |  | 0 | 0
Other Comprehensive Income (Loss), Tax | 7,405 |  |  | 2,315 |  |  | 5,213 | 5,488
Other Comprehensive Income (Loss), Net of Tax | 37,718 |  |  | (6,762) |  |  | 18,871 | (19,391)
Ending Balance | 21,951 | (15,768) |  | (16,032) | (9,270) |  | 21,951 | (16,032)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |  |
Beginning Balance | (27,307) |  | (25,535) | (43,099) |  | (42,968) | (25,535) | (42,968)
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 0 |  |  | 0 |  |  | 0 | 0
Debt Securities, Available-for-Sale, Realized Loss |  |  |  |  |  |  | 0 |
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities | 0 |  |  | 0 |  |  | 0 | 0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 0 |  |  | 0 |  |  | 0 | 0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax | 0 |  |  | 0 |  |  | 0 | 0
Labor and Related Expense | (73) |  |  | (81) |  |  | (217) | (244)
Other Expenses | (7) |  |  | (7) |  |  | (21) | 15
Other Comprehensive Income (Loss), Tax | 20 |  |  | 23 |  |  | (1,594) | 31
Other Comprehensive Income (Loss), Net of Tax | (60) |  |  | (66) |  |  | (1,832) | (198)
Ending Balance | (27,367) | (27,307) |  | (43,166) | (43,099) |  | (27,367) | (43,166)
AOCI Attributable to Parent [Member] |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |  |  |
Beginning Balance | (219,214) |  | (171,096) | (291,642) |  | (272,799) | (171,096) | (272,799)
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 90,858 |  |  | (56,924) |  |  | 49,844 | (69,512)
Debt Securities, Available-for-Sale, Realized Loss |  |  |  |  |  |  | 197 |
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities | 2,147 |  |  | 2,327 |  |  | 6,329 | 6,883
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 25,609 |  |  | (13,592) |  |  | (639) | (33,976)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax | 4,705 |  |  | 4,516 |  |  | 14,297 | 9,097
Labor and Related Expense | (73) |  |  | (81) |  |  | (217) | (244)
Other Expenses | (7) |  |  | (7) |  |  | (21) | 15
Other Comprehensive Income (Loss), Tax | (15,773) |  |  | 16,266 |  |  | (10,440) | 21,398
Other Comprehensive Income (Loss), Net of Tax | 107,466 | (9,333) | $ (38,785) | (47,497) | (58,054) | $ 39,211 | 59,348 | (66,340)
Ending Balance | $ (111,748) | $ (219,214) |  | $ (339,140) | $ (291,642) |  | $ (111,748) | $ (339,140)

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