Finance Receivables And Allowance For Credit Losses (Schedule Of Impaired Loans That Are Individually Evaluated) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded Investment	$ 69,011	$ 75,063
Unpaid Principal Balance	85,815	94,076
Related Allowance	12,592	12,608
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment with no related allowance	6,691	10,094
Recorded investment with related allowance	20,985	21,744
Unpaid principal balance with no related allowance	8,605	13,047
Unpaid principal balance with related allowance	24,912	24,928
Related Allowance	6,569	7,143
Commercial Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment with no related allowance	1,662	610
Recorded investment with related allowance	807	2,256
Unpaid principal balance with no related allowance	2,750	610
Unpaid principal balance with related allowance	915	3,327
Related Allowance	53	12
Commercial Real Estate - Other [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment with no related allowance	13,324	18,136
Recorded investment with related allowance	25,542	22,223
Unpaid principal balance with no related allowance	19,337	27,372
Unpaid principal balance with related allowance	29,296	24,792
Related Allowance	$ 5,970	$ 5,453