Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (171,096)
Net unrealized (losses) on AFS securities transferred to HTM, prior to transfer	0	$ 0	$ (67,604)
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax	(8,360)	(9,025)	(9,870)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(21,537)	(13,254)	3,626
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	16,478	13,930	(212)
Labor and Related Expense	(487,956)	(468,355)	(454,101)
Other Comprehensive Income (Loss), Net of Tax, Total	96,681	101,703	(262,483)
Ending Balance		(171,096)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(148,641)	(233,192)	(5,266)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(23,978)	41,145	(250,273)
Net unrealized (losses) on AFS securities transferred to HTM, prior to transfer			(67,604)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	148,380	64,940	1,922
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax	(8,360)	(9,025)	(9,870)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0	0	0
Labor and Related Expense	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss), Tax	(33,114)	(30,560)	78,159
Other Comprehensive Income (Loss), Net of Tax, Total	99,648	84,550	(227,926)
Ending Balance	(48,993)	(148,641)	(233,192)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	3,080	3,360	0
Other Comprehensive Income (Loss), before Reclassifications, before Tax	0	0	0
Net unrealized (losses) on AFS securities transferred to HTM, prior to transfer			0
Debt Securities, Available-for-Sale, Realized Gain (Loss)	0	0	0
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax	0	0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(21,537)	(13,254)	3,626
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	16,478	13,930	(212)
Labor and Related Expense	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss), Tax	710	(956)	(54)
Other Comprehensive Income (Loss), Net of Tax, Total	(4,348)	(280)	3,360
Ending Balance	(1,268)	3,080	3,360
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(25,535)	(42,968)	(5,051)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	2,210	24,091	(51,745)
Net unrealized (losses) on AFS securities transferred to HTM, prior to transfer			0
Debt Securities, Available-for-Sale, Realized Gain (Loss)	0	0	0
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax	0	0	0
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0	0	0
Labor and Related Expense	(290)	(326)	(325)
Other Expenses	(28)	(29)	658
Other Comprehensive Income (Loss), Tax	(511)	(6,304)	13,495
Other Comprehensive Income (Loss), Net of Tax, Total	1,381	17,432	(37,917)
Ending Balance	(24,154)	(25,535)	(42,968)
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(171,096)	(272,799)	(10,317)
Other Comprehensive Income (Loss), before Reclassifications, before Tax	(21,768)	65,236	(302,018)
Net unrealized (losses) on AFS securities transferred to HTM, prior to transfer			(67,604)
Debt Securities, Available-for-Sale, Realized Gain (Loss)	148,380	64,940	1,922
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax	(8,360)	(9,025)	(9,870)
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(21,537)	(13,254)	3,626
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	16,478	13,930	(212)
Labor and Related Expense	(290)	(326)	(325)
Other Expenses	(28)	(29)	658
Other Comprehensive Income (Loss), Tax	(32,915)	(37,820)	91,601
Other Comprehensive Income (Loss), Net of Tax, Total	96,681	101,703	(262,483)
Ending Balance	$ (74,416)	$ (171,096)	$ (272,799)