Finance Receivables And Allowance For Credit Losses (Schedule Of Composition Of Loans) (Details) (USD $) In Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2011		Dec. 31, 2010		Jun. 30, 2011	Sep. 30, 2010	Jun. 30, 2010	Dec. 31, 2009
Total Loans	$ 4,851,326		$ 3,743,451
Allowance for loan losses	(65,219)		(72,309)			(72,149)
Net loans	4,785,804		3,671,142			3,630,991
Direct finance leases	87,000		106,100
Commercial [Member]
Allowance for loan losses	(23,868)		(26,204)		(26,029)	(26,909)	(28,559)	(26,869)
Direct finance leases	1,246,289	[1]	1,211,399	[1]
Commercial Real Estate - Construction [Member]
Direct finance leases	50,116		101,016
Commercial Real Estate - Other [Member]
Direct finance leases	1,078,258		841,379
Residential Real Estate [Member]
Direct finance leases	865,951		664,705
Heloc [Member]
Direct finance leases	245,686		248,293
Auto [Member]
Direct finance leases	487,983		497,102
Other [Member]
Direct finance leases	165,777		179,557
Covered Loans [Member]
Direct finance leases	$ 711,266		$ 0

[1] Includes direct finance leases of $87.0 million at September 30, 2011 and $106.1 million at December 31, 2010.