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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | $ (74,416) |  |  | $ (74,416) |
Debt Securities, Available-for-sale, Realized Loss | $ 0 |  | $ 0 |  | 0 | $ (197)
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities | (2,059) |  | (2,122) |  | (3,986) | (4,182)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 1,264 |  | (6,787) |  | 8,532 | (26,248)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax | 1,437 |  | 4,769 |  | 2,555 | 9,592
Labor and Related Expense | 126,994 |  | 121,581 |  | 250,890 | 240,976
Other Comprehensive Income (Loss), Net of Tax | 20,847 | 39,272 | (9,333) | $ (38,785) | 60,119 | (48,117)
Ending Balance | (14,297) |  |  |  | (14,297) |
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Beginning Balance | (23,655) | (48,993) | (169,388) | (148,641) | (48,993) | (148,641)
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 21,317 |  | (11,126) |  | 53,149 | (41,014)
Debt Securities, Available-for-sale, Realized Loss |  |  |  |  |  | 197
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities | 2,059 |  | 2,122 |  | 3,986 | 4,182
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 | (5,830) |  | 2,253 |  | (14,251) | 9,138
Other Comprehensive Income (Loss), Net of Tax | 17,545 |  | (6,751) |  | 42,884 | (27,498)
Ending Balance | (6,109) | (23,655) | (176,139) | (169,388) | (6,109) | (176,139)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Beginning Balance | 9,135 | (1,268) | (13,246) | 3,080 | (1,268) | 3,080
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 | 1,264 |  | (6,787) |  | 8,532 | (26,248)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax | 1,437 |  | 4,769 |  | 2,555 | 9,592
Labor and Related Expense | 0 |  | 0 |  | 0 | 0
Other Expenses | 0 |  | 0 |  | 0 | 0
Other Comprehensive Income (Loss), Tax | 650 |  | (503) |  | 2,668 | (2,192)
Other Comprehensive Income (Loss), Net of Tax | 3,352 |  | (2,522) |  | 13,755 | (18,848)
Ending Balance | 12,487 | 9,135 | (15,768) | (13,246) | 12,487 | (15,768)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Beginning Balance | (20,624) | (24,154) | (27,247) | (25,535) | (24,154) | (25,535)
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 0 |  | 0 |  | 4,770 | 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 | (63) |  | (73) |  | 126 | 144
Other Expenses | (4) |  | (7) |  | (8) | (14)
Other Comprehensive Income (Loss), Tax | 17 |  | 20 |  | (1,157) | (1,614)
Other Comprehensive Income (Loss), Net of Tax | (50) |  | (60) |  | 3,480 | (1,772)
Ending Balance | (20,674) | (20,624) | (27,307) | (27,247) | (20,674) | (27,307)
AOCI Attributable to Parent [Member] |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Beginning Balance | (35,144) | (74,416) | (209,881) | (171,096) | (74,416) | (171,096)
Other Comprehensive Income (Loss), before Reclassifications, before Tax | 21,317 |  | (11,126) |  | 57,919 | (41,014)
Debt Securities, Available-for-sale, Realized Loss |  |  |  |  |  | 197
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities | 2,059 |  | 2,122 |  | 3,986 | 4,182
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 1,264 |  | (6,787) |  | 8,532 | (26,248)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax | 1,437 |  | 4,769 |  | 2,555 | 9,592
Labor and Related Expense | (63) |  | (73) |  | 126 | 144
Other Expenses | (4) |  | (7) |  | (8) | (14)
Other Comprehensive Income (Loss), Tax | (5,164) |  | 1,769 |  | (12,740) | 5,333
Other Comprehensive Income (Loss), Net of Tax | 20,847 | 39,272 | (9,333) | (38,785) | 60,119 | (48,117)
Ending Balance | $ (14,297) | $ (35,144) | $ (219,214) | $ (209,881) | $ (14,297) | $ (219,214)

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