Noncovered Loans (Analysis of Impaired Loans) (Details) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011		Dec. 31, 2010
Balance of Loans Individually Measured for Specific Impairment	$ 61,142		$ 91,173
Balance of Loans Collectively Measured for Contingency Provision	1,929,786		1,828,071
Average Recorded Investment Impaired Loans	79,138	[1]
Interest Recognized on Impaired Loans	698
Commercial Business [Member] | Impaired Loans With Recorded Allowance [Member] | Secured Debt [Member]
Recorded Investment	1,593	[1]	2,717	[1]
Unpaid Principal Balance	1,592		2,758
Related Allowance	331		600
Commercial Business [Member] | Secured Debt [Member]
Balance of Loans Individually Measured for Specific Impairment	9,204		29,793
Balance of Loans Collectively Measured for Contingency Provision	786,252		724,665
Average Recorded Investment Impaired Loans	20,471	[1]
Interest Recognized on Impaired Loans	52
Commercial Business [Member] | Secured Debt [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	7,617	[1]	27,081	[1]
Unpaid Principal Balance	7,612		26,913
Commercial Business [Member] | Impaired Loans With Recorded Allowance [Member] | Unsecured Debt [Member]
Recorded Investment	71	[1]	75	[1]
Unpaid Principal Balance	71		75
Related Allowance	71		75
Commercial Business [Member] | Unsecured Debt [Member]
Balance of Loans Individually Measured for Specific Impairment	100		104
Balance of Loans Collectively Measured for Contingency Provision	41,189		40,808
Average Recorded Investment Impaired Loans	102	[1]
Interest Recognized on Impaired Loans	1
Commercial Business [Member] | Unsecured Debt [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	29	[1]	29	[1]
Unpaid Principal Balance	29		30
Real Estate 1-4 Family [Member] | Impaired Loans With Recorded Allowance [Member] | Residential RE Perm [Member]
Recorded Investment	0	[1]	0	[1]
Unpaid Principal Balance	0		0
Related Allowance	0		0
Real Estate 1-4 Family [Member] | Residential RE Perm [Member]
Balance of Loans Individually Measured for Specific Impairment	2,425		2,655
Balance of Loans Collectively Measured for Contingency Provision	48,652		46,728
Average Recorded Investment Impaired Loans	2,649	[1]
Interest Recognized on Impaired Loans	0
Real Estate 1-4 Family [Member] | Residential RE Perm [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	2,428	[1]	2,658	[1]
Unpaid Principal Balance	2,425		2,949
Real Estate Commercial & Multifamily [Member] | Impaired Loans With Recorded Allowance [Member] | Commercial RE Land [Member]
Recorded Investment	0	[1]	3,062	[1]
Unpaid Principal Balance	0		5,225
Related Allowance	0		0
Real Estate Commercial & Multifamily [Member] | Commercial RE Land [Member]
Balance of Loans Individually Measured for Specific Impairment	3,760		3,863
Balance of Loans Collectively Measured for Contingency Provision	21,933		20,959
Average Recorded Investment Impaired Loans	4,567	[1]
Interest Recognized on Impaired Loans	0
Real Estate Commercial & Multifamily [Member] | Commercial RE Land [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	3,763	[1]	804	[1]
Unpaid Principal Balance	3,760		826
Real Estate Commercial & Multifamily [Member] | Impaired Loans With Recorded Allowance [Member] | Income Property Multifamily Perm [Member]
Recorded Investment	2,340	[1]	3,094	[1]
Unpaid Principal Balance	2,339		3,139
Related Allowance	301		59
Real Estate Commercial & Multifamily [Member] | Income Property Multifamily Perm [Member]
Balance of Loans Individually Measured for Specific Impairment	8,113		10,595
Balance of Loans Collectively Measured for Contingency Provision	473,138		427,799
Average Recorded Investment Impaired Loans	10,330	[1]
Interest Recognized on Impaired Loans	442
Real Estate Commercial & Multifamily [Member] | Income Property Multifamily Perm [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	5,782	[1]	10,292	[1]
Unpaid Principal Balance	5,774		12,253
Real Estate Commercial & Multifamily [Member] | Impaired Loans With Recorded Allowance [Member] | Owner Occupied RE Perm [Member]
Recorded Investment	1,466	[1]	0	[1]
Unpaid Principal Balance	1,465		0
Related Allowance	286		0
Real Estate Commercial & Multifamily [Member] | Owner Occupied RE Perm [Member]
Balance of Loans Individually Measured for Specific Impairment	16,146		14,103
Balance of Loans Collectively Measured for Contingency Provision	327,962		317,010
Average Recorded Investment Impaired Loans	15,431	[1]
Interest Recognized on Impaired Loans	64
Real Estate Commercial & Multifamily [Member] | Owner Occupied RE Perm [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	14,717	[1]	14,152	[1]
Unpaid Principal Balance	14,681		17,099
Construction 1-4 Family [Member] | Impaired Loans With Recorded Allowance [Member] | Land & Acquisition [Member]
Recorded Investment	1,190	[1]	533	[1]
Unpaid Principal Balance	1,190		549
Related Allowance	148		3
Construction 1-4 Family [Member] | Land & Acquisition [Member]
Balance of Loans Individually Measured for Specific Impairment	7,974		11,543
Balance of Loans Collectively Measured for Contingency Provision	22,078		25,362
Average Recorded Investment Impaired Loans	9,681	[1]
Interest Recognized on Impaired Loans	138
Construction 1-4 Family [Member] | Land & Acquisition [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	6,787	[1]	11,013	[1]
Unpaid Principal Balance	6,784		20,718
Construction 1-4 Family [Member] | Impaired Loans With Recorded Allowance [Member] | Residential Construction [Member]
Recorded Investment	0	[1]	915	[1]
Unpaid Principal Balance	0		1,723
Related Allowance	0		62
Construction 1-4 Family [Member] | Residential Construction [Member]
Balance of Loans Individually Measured for Specific Impairment	2,289		6,400
Balance of Loans Collectively Measured for Contingency Provision	20,027		24,655
Average Recorded Investment Impaired Loans	4,158	[1]
Interest Recognized on Impaired Loans	0
Construction 1-4 Family [Member] | Residential Construction [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	2,311	[1]	5,585	[1]
Unpaid Principal Balance	2,289		9,824
Construction Commercial & Multifamily [Member] | Impaired Loans With Recorded Allowance [Member] | Income Property Multifamily Construction [Member]
Recorded Investment	0	[1]	6,792	[1]
Unpaid Principal Balance	0		10,515
Related Allowance	0		175
Construction Commercial & Multifamily [Member] | Income Property Multifamily Construction [Member]
Balance of Loans Individually Measured for Specific Impairment	5,976		7,584
Balance of Loans Collectively Measured for Contingency Provision	2,939		10,666
Average Recorded Investment Impaired Loans	6,878	[1]
Interest Recognized on Impaired Loans	0
Construction Commercial & Multifamily [Member] | Income Property Multifamily Construction [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	5,977	[1]	792	[1]
Unpaid Principal Balance	5,976		2,401
Construction Commercial & Multifamily [Member] | Impaired Loans With Recorded Allowance [Member] | Owner Occupied RE Construction [Member]
Recorded Investment	0	[1]	0	[1]
Unpaid Principal Balance	0		0
Related Allowance	0		0
Construction Commercial & Multifamily [Member] | Owner Occupied RE Construction [Member]
Balance of Loans Individually Measured for Specific Impairment	0		0
Balance of Loans Collectively Measured for Contingency Provision	13,207		11,935
Average Recorded Investment Impaired Loans	0	[1]
Interest Recognized on Impaired Loans	0
Construction Commercial & Multifamily [Member] | Owner Occupied RE Construction [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	0	[1]	0	[1]
Unpaid Principal Balance	0		0
Consumer [Member] | Impaired Loans With Recorded Allowance [Member]
Recorded Investment	106	[1]	0	[1]
Unpaid Principal Balance	106		0
Related Allowance	11		0
Impaired Loans With Recorded Allowance [Member]
Recorded Investment	6,766	[1]	17,188	[1]
Unpaid Principal Balance	6,763		23,984
Related Allowance	1,148		974
Consumer [Member] | Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	5,050	[1]	4,533	[1]
Unpaid Principal Balance	5,049		4,691
Impaired Loans Without Recorded Allowance [Member]
Recorded Investment	54,461	[1]	76,939	[1]
Unpaid Principal Balance	54,379		97,704
Consumer [Member]
Balance of Loans Individually Measured for Specific Impairment	5,155		4,533
Balance of Loans Collectively Measured for Contingency Provision	172,409		177,484
Average Recorded Investment Impaired Loans	4,871	[1]
Interest Recognized on Impaired Loans	$ 1

[1] Recorded investment includes unpaid principal balance, net of charge-offs, unamortized deferred loan fees or costs, unamortized premiums or discounts and accrued interest.