Finance Receivables And Allowance For Credit Losses (Schedule Of Impaired Loans That Are Individually Evaluated) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 63,982
Related allowance	1,702
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	23,150	14,721
Commercial Loans [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	75,063	53,321
Unpaid Principal Balance	94,076	64,972
Related allowance	12,608	14,577
Commercial Loans [Member] | Commercial [Member] | Impaired Financing Receivable With No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	10,094	6,116
Unpaid Principal Balance	13,047	8,001
Related allowance	0	0
Commercial Loans [Member] | Commercial [Member] | Impaired Financing Receivable With Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	21,744	17,828
Unpaid Principal Balance	24,928	20,341
Related allowance	7,143	6,063
Commercial Loans [Member] | Commercial Real Estate - Construction [Member] | Impaired Financing Receivable With No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	610	0
Unpaid Principal Balance	610	0
Related allowance	0	0
Commercial Loans [Member] | Commercial Real Estate - Construction [Member] | Impaired Financing Receivable With Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,256	0
Unpaid Principal Balance	3,327	0
Related allowance	12	0
Commercial Loans [Member] | Commercial Real Estate - Other [Member] | Impaired Financing Receivable With No Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	18,136	10,554
Unpaid Principal Balance	27,372	16,781
Related allowance	0	0
Commercial Loans [Member] | Commercial Real Estate - Other [Member] | Impaired Financing Receivable With Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	22,223	18,823
Unpaid Principal Balance	24,792	19,849
Related allowance	$ 5,453	$ 8,514