Finance Receivables And Allowance For Credit Losses (Schedule Of Composition Of Loans) (Details) (USD $)	3 Months Ended		12 Months Ended
	Jun. 30, 2012		Dec. 31, 2011		Jun. 30, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 4,715,630,000		$ 4,767,203,000
Allowance for loan losses	(50,424,000)		(57,117,000)		(70,189,000)
Allowance for loan losses - covered loans	(4,336,000)		(943,000)		0
Net loans	4,660,870,000		4,709,143,000		4,047,152,000
Direct finance leases	68,900,000		79,600,000
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,205,532,000	[1]	1,216,654,000	[1]
Commercial Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	64,910,000		46,141,000
Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	977,671,000		1,021,229,000
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	1,122,800,000		995,458,000
Heloc [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	220,565,000		235,603,000
Auto [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	511,706,000		483,575,000
Consumer - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	123,115,000		142,183,000
Covered Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans	$ 489,331,000		$ 626,360,000

[1] Includes direct finance leases of $68.9 million at June 30, 2012 and $79.6 million at December 31, 2011.