Income Taxes (Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Allowance for loan losses	$ 77,045	$ 85,118
Loan purchase accounting adjustments	485	1,838
Tax credit carryforward		2,326
Federal/state net operating loss	3,591	3,646
Lease liability	26,207	27,553
Net unrealized losses on securities available-for-sale and cash flow hedges	195,090
Derivatives	38,082	1,735
Other	10,085	8,883
Gross deferred tax assets	350,585	131,099
State valuation allowance	(3,591)	(3,646)
Net deferred tax assets	346,994	127,453
Employee compensation and benefits	(8,399)	(11,137)
Net unrealized gains on securities available-for-sale an cash flow hedges		(10,136)
Fixed assets & intangibles	(26,589)	(35,705)
Lease Financing	(52,385)	(52,896)
Right-of-use Asset	(21,809)	(23,075)
Other	(26,394)	(13,938)
Gross deferred tax liabilities	(135,576)	(146,887)
Net deferred tax liability	$ (211,418)	$ (19,434)