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, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 17,751	$ 19,774
60-89 Days Past Due	6,040	15,453
Greater Than 90 Days and Accruing	4,232	10,821
Total Past Due	28,023	46,048
Nonaccrual	66,736	80,562
Current	6,598,844	5,772,568
Total, Non-covered loans and leases	6,693,603	5,899,178
Deferred loan fees, net	(12,523)	(11,080)
Total loans and leases	6,681,080	5,888,098
Term & Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	7,747	7,319
60-89 Days Past Due	2,784	11,184
Total Past Due	10,531	18,503
Nonaccrual	43,290	44,486
Current	3,884,622	3,495,306
Total, Non-covered loans and leases	3,938,443	3,558,295
Construction & Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	283
60-89 Days Past Due		662
Greater Than 90 Days and Accruing		575
Total Past Due	283	1,237
Nonaccrual	4,177	3,348
Current	197,658	160,481
Total, Non-covered loans and leases	202,118	165,066
Residential Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	479	4,171
Total Past Due	479	4,171
Nonaccrual	5,132	15,836
Current	51,598	70,066
Total, Non-covered loans and leases	57,209	90,073
Term [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	3,009	2,075
60-89 Days Past Due	746	738
Greater Than 90 Days and Accruing	81	1,179
Total Past Due	3,836	3,992
Nonaccrual	7,040	8,120
Current	786,926	613,654
Total, Non-covered loans and leases	797,802	625,766
LOC & Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,647	5,435
60-89 Days Past Due	1,503	1,697
Greater Than 90 Days and Accruing		1,397
Total Past Due	3,150	8,529
Nonaccrual	7,027	8,772
Current	913,151	815,698
Total, Non-covered loans and leases	923,328	832,999
Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	2,906	215
60-89 Days Past Due	602	965
Greater Than 90 Days and Accruing	3,303	4,343
Total Past Due	6,811	5,523
Current	469,768	310,404
Total, Non-covered loans and leases	476,579	315,927
Home Equity Loans & Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	1,398	492
60-89 Days Past Due	214	191
Greater Than 90 Days and Accruing	758	2,648
Total Past Due	2,370	3,331
Nonaccrual	49
Current	258,378	268,861
Total, Non-covered loans and leases	260,797	272,192
Consumer & Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	282	67
60-89 Days Past Due	191	16
Greater Than 90 Days and Accruing	90	679
Total Past Due	563	762
Nonaccrual	21
Current	36,743	38,098
Total, Non-covered loans and leases	$ 37,327	$ 38,860