Finance Receivables And Allowance For Credit Losses (Schedule Of Average Balance And Interest Income Recognized On Impaired Loans) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment, Total	$ 76,154	$ 64,194
Interest income recognized with an allowance recorded	979
Interest Income Recognized		2,214	[1]
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	8,329	8,105
Average recorded investment with an allowance recorded	22,581	19,786
Interest income recognized with no related allowance	166	357	[1]
Interest income recognized with an allowance recorded	116	679	[1]
Commercial Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	895	305
Average recorded investment with an allowance recorded	2,742	1,128
Interest income recognized with no related allowance	0	0	[1]
Interest income recognized with an allowance recorded	0	89	[1]
Commercial Real Estate - Other [Member]
Financing Receivable, Impaired [Line Items]
Average recorded investment with no related allowance	17,541	14,346
Average recorded investment with an allowance recorded	24,066	20,524
Interest income recognized with no related allowance	224	463	[1]
Interest income recognized with an allowance recorded	$ 473	$ 626	[1]

[1] The Company does not record interest on nonaccrual loans until principal is recovered.