Noncovered Loans (Analysis of Nonaccrual Loans) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Recorded Investment Nonaccrual Loans	$ 55,052	$ 89,301
Unpaid Principal Balance Nonaccrual Loans	89,782	127,001
Commercial Business [Member] | Secured Debt [Member]
Recorded Investment Nonaccrual Loans	9,594	32,368
Unpaid Principal Balance Nonaccrual Loans	18,025	44,316
Commercial Business [Member] | Unsecured Debt [Member]
Recorded Investment Nonaccrual Loans	301	0
Unpaid Principal Balance Nonaccrual Loans	1,244	327
Real Estate Commercial & Multifamily Residential [Member] | Commercial Land [Member]
Recorded Investment Nonaccrual Loans	3,872	4,093
Unpaid Principal Balance Nonaccrual Loans	7,355	6,279
Real Estate Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Recorded Investment Nonaccrual Loans	7,135	11,716
Unpaid Principal Balance Nonaccrual Loans	9,740	12,737
Real Estate Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Recorded Investment Nonaccrual Loans	9,845	7,407
Unpaid Principal Balance Nonaccrual Loans	10,908	8,990
Construction One-To-Four Family Residential[Member] | Land and Acquisition [Member]
Recorded Investment Nonaccrual Loans	7,817	11,608
Unpaid Principal Balance Nonaccrual Loans	15,952	21,344
Construction One-To-Four Family Residential[Member] | Residential Construction [Member]
Recorded Investment Nonaccrual Loans	3,164	6,503
Unpaid Principal Balance Nonaccrual Loans	4,691	11,547
Construction Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Recorded Investment Nonaccrual Loans	7,622	7,585
Unpaid Principal Balance Nonaccrual Loans	14,963	12,916
Construction Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Recorded Investment Nonaccrual Loans	0	0
Unpaid Principal Balance Nonaccrual Loans	0	0
Consumer [Member]
Recorded Investment Nonaccrual Loans	3,545	5,022
Unpaid Principal Balance Nonaccrual Loans	$ 4,390	$ 5,192