Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Loans, principally due to allowance for loan losses	$ 75,710	$ 86,677
Accrued expenses	15,528	17,652
Equity-based compensation	12,469	13,218
Pension	7,840	3,645
Deferred compensation	6,280	5,739
Deferred tax assets, Other	11,799	10,800
Total deferred tax assets	129,626	137,731
Unrealized gain on securities available for sale	100,215	80,790
Equipment lease financing	54,980	48,451
Land, buildings and equipment	16,433	19,116
Accretion on investment securities	6,613	6,877
Intangibles	4,867	4,642
Prepaid expenses	3,119	2,861
Deferred tax liabilities, Other	5,280	4,823
Total deferred tax liabilities	191,507	167,560
Net deferred tax liabilities	$ (61,881)	$ (29,829)