Noncovered Loans (Analysis of Nonaccrual Loans) (Details) (Noncovered Loans [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	$ 37,395	$ 53,483
Unpaid Principal Balance Nonaccrual Loans	57,877	88,868
Recorded Investment Nonaccrual Loans		53,483
Commercial Portfolio Segment [Member] | Secured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	9,037	10,124
Unpaid Principal Balance Nonaccrual Loans	17,821	16,820
Recorded Investment Nonaccrual Loans		10,124
Commercial Portfolio Segment [Member] | Unsecured Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	262	119
Unpaid Principal Balance Nonaccrual Loans	262	719
Recorded Investment Nonaccrual Loans		119
Real Estate Portfolio Segment [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	2,349	2,696
Unpaid Principal Balance Nonaccrual Loans	2,672	3,011
Recorded Investment Nonaccrual Loans		2,696
Real Estate Portfolio Segment [Member] | Commercial Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	4,076	3,739
Unpaid Principal Balance Nonaccrual Loans	7,491	7,230
Recorded Investment Nonaccrual Loans		3,739
Real Estate Portfolio Segment [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	8,520	6,775
Unpaid Principal Balance Nonaccrual Loans	10,815	9,265
Recorded Investment Nonaccrual Loans		6,775
Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	6,608	8,971
Unpaid Principal Balance Nonaccrual Loans	7,741	10,932
Recorded Investment Nonaccrual Loans		8,971
Real Estate Construction Portfolio Segment [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	0	7,067
Unpaid Principal Balance Nonaccrual Loans	0	14,912
Recorded Investment Nonaccrual Loans		7,067
Real Estate Construction Portfolio Segment [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	0	0
Unpaid Principal Balance Nonaccrual Loans	0	0
Recorded Investment Nonaccrual Loans		0
Real Estate Construction Portfolio Segment [Member] | Land And Acquisition [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	3,084	7,799
Unpaid Principal Balance Nonaccrual Loans	6,704	16,703
Recorded Investment Nonaccrual Loans		7,799
Real Estate Construction Portfolio Segment [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	1,816	2,986
Unpaid Principal Balance Nonaccrual Loans	2,431	5,316
Recorded Investment Nonaccrual Loans		2,986
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment Nonaccrual Loans	1,643	3,207
Unpaid Principal Balance Nonaccrual Loans	1,940	3,960
Recorded Investment Nonaccrual Loans		$ 3,207