Finance Receivables And Allowance For Credit Losses (Schedule Of Impaired Loans That Are Individually Evaluated) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Recorded investment, total commercial	$ 77,237	$ 75,063
Unpaid principal balance, total commercial	94,262	94,076
Related Allowance	7,492	12,608
Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	6,563	10,094
Recorded investment with related allowance	23,417	21,744
Unpaid principal balance with no related allowance	9,280	13,047
Unpaid principal balance with related allowance	28,574	24,928
Related Allowance	4,702	7,143
Commercial [Member] | With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Related Allowance	0	0
Commercial Real Estate - Construction [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	1,179	610
Recorded investment with related allowance	3,227	2,256
Unpaid principal balance with no related allowance	1,287	610
Unpaid principal balance with related allowance	3,227	3,327
Related Allowance	69	12
Commercial Real Estate - Construction [Member] | With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Related Allowance	0	0
Commercial Real Estate - Other [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment with no related allowance	16,944	18,136
Recorded investment with related allowance	25,907	22,223
Unpaid principal balance with no related allowance	23,162	27,372
Unpaid principal balance with related allowance	28,732	24,792
Related Allowance	2,721	5,453
Commercial Real Estate - Other [Member] | With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Related Allowance	$ 0	$ 0