Noncovered Loans (Analysis of Nonaccrual Loans) (Details) (Noncovered Loans [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	$ 57,552	$ 53,483
Financing Receivable Unpaid Principal Balance Nonaccrual Status	94,136	88,868
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		53,483
Commercial Portfolio Segment [Member] | Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	14,676	10,124
Financing Receivable Unpaid Principal Balance Nonaccrual Status	23,299	16,820
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		10,124
Commercial Portfolio Segment [Member] | Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	115	119
Financing Receivable Unpaid Principal Balance Nonaccrual Status	715	719
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		119
Real Estate Portfolio Segment [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,624	2,696
Financing Receivable Unpaid Principal Balance Nonaccrual Status	2,992	3,011
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		2,696
Real Estate Portfolio Segment [Member] | Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	3,432	3,739
Financing Receivable Unpaid Principal Balance Nonaccrual Status	7,233	7,230
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		3,739
Real Estate Portfolio Segment [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	12,771	6,775
Financing Receivable Unpaid Principal Balance Nonaccrual Status	17,277	9,265
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		6,775
Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	8,669	8,971
Financing Receivable Unpaid Principal Balance Nonaccrual Status	12,249	10,932
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		8,971
Real Estate Construction Portfolio Segment [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	5,023	7,067
Financing Receivable Unpaid Principal Balance Nonaccrual Status	10,367	14,912
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		7,067
Real Estate Construction Portfolio Segment [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	0	0
Real Estate Construction Portfolio Segment [Member] | Land and Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	6,410	7,799
Financing Receivable Unpaid Principal Balance Nonaccrual Status	13,581	16,703
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		7,799
Real Estate Construction Portfolio Segment [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	2,383	2,986
Financing Receivable Unpaid Principal Balance Nonaccrual Status	4,647	5,316
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		2,986
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status	1,449	3,207
Financing Receivable Unpaid Principal Balance Nonaccrual Status	1,776	3,960
Financing Receivable, Recorded Investment, Gross, Nonaccrual Status		$ 3,207