Finance Receivables And Allowance For Credit Losses (Schedule Of Past Due Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 18,603	$ 32,070
60-89 Days Past Due	4,325	6,731
Recorded Investment > 90 Days and Accruing	866	3,448
Nonaccrual	240,541	298,208
Total Past Due	264,335	340,457
Current	4,451,295	4,426,746
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,560	2,755
60-89 Days Past Due	262	357
Recorded Investment > 90 Days and Accruing	100	358
Nonaccrual	28,822	34,104
Total Past Due	31,744	37,574
Current	1,173,788	1,179,080
Commercial Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	164
Recorded Investment > 90 Days and Accruing	0	0
Nonaccrual	4,580	5,425
Total Past Due	4,580	5,589
Current	60,330	40,552
Commercial Real Estate - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,660	7,466
60-89 Days Past Due	232	413
Recorded Investment > 90 Days and Accruing	51	279
Nonaccrual	53,189	60,762
Total Past Due	55,132	68,920
Current	922,539	952,309
Heloc [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	450	706
60-89 Days Past Due	167	186
Recorded Investment > 90 Days and Accruing	0	151
Nonaccrual	1,028	1,269
Total Past Due	1,645	2,312
Current	218,920	233,291
Auto [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	3,566	5,745
60-89 Days Past Due	678	1,276
Recorded Investment > 90 Days and Accruing	112	246
Nonaccrual	1,455	1,943
Total Past Due	5,811	9,210
Current	505,895	474,365
Consumer - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,577	2,002
60-89 Days Past Due	513	463
Recorded Investment > 90 Days and Accruing	15	76
Nonaccrual	1,515	1,578
Total Past Due	3,620	4,119
Current	119,495	138,064
Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	6,543	7,950
60-89 Days Past Due	1,671	1,839
Recorded Investment > 90 Days and Accruing	0	0
Nonaccrual	8,872	10,247
Total Past Due	17,086	20,036
Current	1,105,714	975,422
Covered Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,247	5,446
60-89 Days Past Due	802	2,033
Recorded Investment > 90 Days and Accruing	588	2,338
Nonaccrual	141,080	182,880
Total Past Due	144,717	192,697
Current	$ 344,614	$ 433,663