Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Unrealized losses on available-for-sale securities	$ 305,001	$ 374,973
Loans, principally due to allowance for credit losses	44,702	43,553
Unearned fee income	10,810	5,534
Accrued expenses	10,531	6,748
Equity-based compensation	8,082	7,491
Deferred compensation	7,894	7,864
Deferred tax assets, Other	812	1,737
Total deferred tax assets	387,832	447,900
Equipment lease financing	99,453	91,913
Land, buildings and equipment	21,016	17,210
Cash flow hedges	9,468	19,747
Intangible assets	7,545	7,519
Private equity investments	6,888	9,393
Deferred tax liabilities, Other	7,235	8,138
Total deferred tax liabilities	151,605	153,920
Net deferred tax assets (liabilities)	$ 236,227	$ 293,980