Finance Receivables And Allowance For Credit Losses (Schedule Of Activity Of Purchased Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Impaired [Line Items]
Outstanding balance	$ 65,684
Carrying amount, net of allowance	63,982
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Purchased impaired loans	1,143
Carrying amount, net of allowance	23,150	14,721
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Purchased impaired loans	23,059
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Purchased impaired loans	41,064
Residential [Member]
Financing Receivable, Impaired [Line Items]
Purchased impaired loans	$ 418