Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	$ (10,317)
HTM investment securities, net, at amortized cost	9,870	$ 1,551	$ 3,359
Personnel	(454,101)	(426,687)	(432,151)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(54)	0	0
Net other comprehensive income (loss) during period	(262,483)	(22,935)	45,801
Ending Balance	(272,799)	(10,317)
Fair value adjustment on cash flow hedge	3,626	0	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	(212)	0	0
Investment Securities AFS
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(5,266)	41,325	3,989
Other comprehensive income before reclassifications	(250,273)	(63,714)	55,628
Unrealized (losses) on AFS securities transferred to HTM securities	(67,604)
Investment securities losses, net	1,922	16	(9,222)
HTM investment securities, net, at amortized cost	9,870	1,551	3,359
Personnel	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss), Tax	78,159	15,557	(12,429)
Net other comprehensive income (loss) during period	(227,926)	(46,591)	37,336
Ending Balance	(233,192)	(5,266)	41,325
Fair value adjustment on cash flow hedge	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0
Defined Benefit Pension and Postretirement Obligations
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(5,051)	(28,707)	(37,172)
Other comprehensive income before reclassifications	(51,745)	25,519	7,780
Unrealized (losses) on AFS securities transferred to HTM securities	0
Investment securities losses, net	0	0	0
HTM investment securities, net, at amortized cost	0	0	0
Personnel	(325)	1,346	(148)
Other Expenses	658	4,594	3,897
Other Comprehensive Income (Loss), Tax	13,495	(7,803)	(3,064)
Net other comprehensive income (loss) during period	(37,917)	23,656	8,465
Ending Balance	(42,968)	(5,051)	(28,707)
Fair value adjustment on cash flow hedge	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	0
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	(10,317)	12,618	(33,183)
Other comprehensive income before reclassifications	(302,018)	(38,195)	63,408
Unrealized (losses) on AFS securities transferred to HTM securities	(67,604)
Investment securities losses, net	1,922	16	(9,222)
HTM investment securities, net, at amortized cost	9,870	1,551	3,359
Personnel	(325)	1,346	(148)
Other Expenses	658	4,594	3,897
Other Comprehensive Income (Loss), Tax	91,601	7,754	(15,493)
Net other comprehensive income (loss) during period	(262,483)	(22,935)	45,801
Ending Balance	(272,799)	(10,317)	12,618
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance	0	0	0
Other comprehensive income before reclassifications	0	0	0
Unrealized (losses) on AFS securities transferred to HTM securities	0
Investment securities losses, net	0	0	0
HTM investment securities, net, at amortized cost	0	0	0
Personnel	0	0	0
Other Expenses	0	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	(54)
Other Comprehensive Income (Loss), Tax		0	0
Net other comprehensive income (loss) during period	3,360	0	0
Ending Balance	3,360	$ 0	$ 0
Fair value adjustment on cash flow hedge	3,626
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	$ (212)