Allowance For Non-Covered Loan Loss And Credit Quality (Non-Covered Non-Accrual Loans And Loans Past Due) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Total Non-covered Loans and Leases	$ 5,888,098	$ 5,658,987
Deferred loan fees, net	(11,080)	(11,031)
Non-covered loans and leases	5,888,098	5,658,987
Consumer & Other [Member]
30-59 Days Past Due	67	361
60-89 Days Past Due	16	233
Greater Than 90 Days and Accruing	679	441
Total Past Due	762	1,035
Nonaccrual
Current	38,098	32,008
Total Non-covered Loans and Leases	38,860	33,043
Total Loan [Member]
30-59 Days Past Due	19,774	28,128
60-89 Days Past Due	15,453	20,089
Greater Than 90 Days and Accruing	10,821	7,071
Total Past Due	46,048	55,288
Nonaccrual	80,562	138,177
Current	5,772,568	5,476,553
Total Non-covered Loans and Leases	5,899,178	5,670,018
Commercial [Member] | Term [Member]
30-59 Days Past Due	2,075	2,010
60-89 Days Past Due	738	932
Greater Than 90 Days and Accruing	1,179
Total Past Due	3,992	2,942
Nonaccrual	8,120	6,271
Current	613,654	500,240
Total Non-covered Loans and Leases	625,766	509,453
Commercial [Member] | LOC & Other [Member]
30-59 Days Past Due	5,435	5,939
60-89 Days Past Due	1,697	1,418
Greater Than 90 Days and Accruing	1,397	18
Total Past Due	8,529	7,375
Nonaccrual	8,772	28,034
Current	815,698	712,010
Total Non-covered Loans and Leases	832,999	747,419
Commercial Real Estate [Member] | Term & Multifamily [Member]
30-59 Days Past Due	7,319	14,596
60-89 Days Past Due	11,184	8,328
Greater Than 90 Days and Accruing		3,008
Total Past Due	18,503	25,932
Nonaccrual	44,486	49,162
Current	3,495,306	3,408,381
Total Non-covered Loans and Leases	3,558,295	3,483,475
Commercial Real Estate [Member] | Construction & Development [Member]
30-59 Days Past Due		2,172
60-89 Days Past Due	662	6,726
Greater Than 90 Days and Accruing	575
Total Past Due	1,237	8,898
Nonaccrual	3,348	20,124
Current	160,481	218,792
Total Non-covered Loans and Leases	165,066	247,814
Commercial Real Estate [Member] | Residential Development [Member]
30-59 Days Past Due	4,171	640
60-89 Days Past Due
Greater Than 90 Days and Accruing
Total Past Due	4,171	640
Nonaccrual	15,836	34,586
Current	70,066	112,587
Total Non-covered Loans and Leases	90,073	147,813
Residential [Member] | Mortgage [Member]
30-59 Days Past Due	215	1,314
60-89 Days Past Due	965	1,101
Greater Than 90 Days and Accruing	4,343	3,372
Total Past Due	5,523	5,787
Nonaccrual
Current	310,404	216,629
Total Non-covered Loans and Leases	315,927	222,416
Residential [Member] | Home Equity Loans & Lines [Member]
30-59 Days Past Due	492	1,096
60-89 Days Past Due	191	1,351
Greater Than 90 Days and Accruing	2,648	232
Total Past Due	3,331	2,679
Nonaccrual
Current	268,861	275,906
Total Non-covered Loans and Leases	$ 272,192	$ 278,585