Finance Receivables And Allowance For Credit Losses (Schedule Of Recorded Investment On Payment Activity) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Heloc [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	$ 220,565	$ 235,603
Heloc [Member] | Performing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	219,537	234,334
Heloc [Member] | Nonperforming [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	1,028	1,269
Auto [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	511,706	483,575
Auto [Member] | Performing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	510,251	481,632
Auto [Member] | Nonperforming [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	1,455	1,943
Consumer - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	123,115	142,183
Consumer - Other [Member] | Performing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	121,600	140,605
Consumer - Other [Member] | Nonperforming [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	1,515	1,578
Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	1,122,800	995,458
Residential [Member] | Performing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	1,113,928	985,211
Residential [Member] | Nonperforming [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Finance receivable recorded investment	$ 8,872	$ 10,247