Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Loans, principally due to allowance for loan losses	$ 40,341	$ 61,233
Equity-based compensation	8,201	12,633
Deferred compensation	5,647	7,998
Private equity investments	5,473	9,667
Accrued expenses	5,245	16,638
Unearned fee income	3,701	3,819
Deferred tax assets, Other	4,430	6,071
Total deferred tax assets	73,038	118,059
Equipment lease financing	45,825	71,355
Unrealized gain on securities available for sale	13,603	18,572
Land, buildings and equipment	8,592	10,375
Undistributed earnings of subsidiaries	7,094	23
Intangibles	5,732	9,105
Deferred tax liabilities, Other	6,569	8,765
Total deferred tax liabilities	87,415	118,195
Net deferred tax assets (liabilities)	$ (14,377)	$ (136)