Finance Receivables And Allowance For Credit Losses (Schedule Of Past Due Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 2,755	$ 2,543
60-89 Days Past Due	357	583
Recorded Investment > 90 Days and Accruing	358	79
Nonaccrual	34,104	25,488
Total Past Due	37,574	28,693
Current	1,179,080	1,182,706
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	164	0
Recorded Investment > 90 Days and Accruing	0	0
Nonaccrual	5,425	0
Total Past Due	5,589	0
Current	40,552	101,016
Commercial Real Estate - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	7,466	992
60-89 Days Past Due	413	98
Recorded Investment > 90 Days and Accruing	279	0
Nonaccrual	60,762	30,416
Total Past Due	68,920	31,506
Current	952,309	809,873
Consumer, Heloc [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	706	849
60-89 Days Past Due	186	477
Recorded Investment > 90 Days and Accruing	151	189
Nonaccrual	1,269	1,903
Total Past Due	2,312	3,418
Current	233,291	244,875
Consumer, Auto [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	5,745	5,791
60-89 Days Past Due	1,276	1,316
Recorded Investment > 90 Days and Accruing	246	120
Nonaccrual	1,943	2,331
Total Past Due	9,210	9,558
Current	474,365	487,544
Consumer - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,002	1,129
60-89 Days Past Due	463	972
Recorded Investment > 90 Days and Accruing	76	184
Nonaccrual	1,578	2,088
Total Past Due	4,119	4,373
Current	138,064	175,184
Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	7,950	9,126
60-89 Days Past Due	1,839	1,589
Recorded Investment > 90 Days and Accruing	0	0
Nonaccrual	10,247	8,719
Total Past Due	20,036	19,434
Current	975,422	645,271
Covered Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	5,446
60-89 Days Past Due	2,033
Recorded Investment > 90 Days and Accruing	2,338
Nonaccrual	182,880
Total Past Due	192,697
Current	433,663
Total Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	32,070	20,430
60-89 Days Past Due	6,731	5,035
Recorded Investment > 90 Days and Accruing	3,448	572
Nonaccrual	298,208	70,945
Total Past Due	340,457	96,982
Current	$ 4,426,746	$ 3,646,469