Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ (74,416)
Debt Securities, Available-for-sale, Realized Loss	0	$ 197
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities	(1,927)	(2,060)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	7,268	(19,461)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	1,118	4,823
Labor and Related Expense	123,897	119,395
Other Comprehensive Income (Loss), Net of Tax	39,272	(38,785)
Ending Balance	(35,144)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(48,993)	(148,641)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	31,832	(29,889)
Debt Securities, Available-for-sale, Realized Loss		197
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities	1,927	2,060
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0	0
Labor and Related Expense	0	0
Other Expenses	0	0
Other Comprehensive Income (Loss), Tax	(8,420)	6,885
Other Comprehensive Income (Loss), Net of Tax	25,339	(20,746)
Ending Balance	(23,655)	(169,388)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(1,268)	3,080
Other Comprehensive Income (Loss), before Reclassifications, before Tax	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
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	7,268	(19,461)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	1,118	4,823
Labor and Related Expense	0	0
Other Expenses	0	0
Other Comprehensive Income (Loss), Tax	2,018	(1,688)
Other Comprehensive Income (Loss), Net of Tax	10,403	(16,326)
Ending Balance	9,135	(13,246)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(24,154)	(25,535)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	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
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0	0
Labor and Related Expense	(63)	(72)
Other Expenses	(4)	(7)
Other Comprehensive Income (Loss), Tax	(1,173)	(1,633)
Other Comprehensive Income (Loss), Net of Tax	3,530	(1,712)
Ending Balance	(20,624)	(27,247)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(74,416)	(171,096)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	36,602	(29,889)
Debt Securities, Available-for-sale, Realized Loss		197
Amortization of Net Unrealized Losses on Available-for-Sale Securities Transfered to Held-to-maturity Securities	1,927	2,060
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	7,268	(19,461)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	1,118	4,823
Labor and Related Expense	(63)	(72)
Other Expenses	(4)	(7)
Other Comprehensive Income (Loss), Tax	(7,576)	3,564
Other Comprehensive Income (Loss), Net of Tax	39,272	(38,785)
Ending Balance	$ (35,144)	$ (209,881)