Finance Receivables And Allowance For Credit Losses (Schedule Of Recorded Investment On Payment Activity) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Residential [Member] | Performing [Member]
Financing Receivable Recorded Investment	$ 785,635	$ 655,986
Performing [Member] | Consumer, Heloc [Member]
Financing Receivable Recorded Investment	254,035	246,390
Performing [Member] | Consumer, Auto [Member]
Financing Receivable Recorded Investment	484,155	494,771
Performing [Member] | Consumer, Other [Member]
Financing Receivable Recorded Investment	138,521	177,470
Residential [Member] | Nonperforming [Member]
Financing Receivable Recorded Investment	9,807	8,719
Nonperforming [Member] | Consumer, Heloc [Member]
Financing Receivable Recorded Investment	1,038	1,903
Nonperforming [Member] | Consumer, Auto [Member]
Financing Receivable Recorded Investment	2,261	2,331
Nonperforming [Member] | Consumer, Other [Member]
Financing Receivable Recorded Investment	1,881	2,087
Consumer, Heloc [Member]
Financing Receivable Recorded Investment	255,073	248,293
Consumer, Auto [Member]
Financing Receivable Recorded Investment	486,416	497,102
Consumer, Other [Member]
Financing Receivable Recorded Investment	140,402	179,557
Residential [Member]
Financing Receivable Recorded Investment	$ 795,442	$ 664,705