Noncovered Loans (Analysis of the Aged Loan Portfolio) (Details) (Noncovered Loans [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	$ 2,376,057	$ 2,282,441
30 - 59 Days Past Due	9,499	8,917
60 - 89 Days Past Due	1,940	3,530
Greater than 90 Days Past Due	0	0
Total Past Due	11,439	12,447
Nonaccrual Loans	49,465	53,483
Loans Receivable, Net	2,436,961	2,348,371
Commercial Portfolio Segment [Member] | Secured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	1,044,846	966,563
30 - 59 Days Past Due	4,025	1,741
60 - 89 Days Past Due	1,153	2,989
Greater than 90 Days Past Due	0	0
Total Past Due	5,178	4,730
Nonaccrual Loans	12,839	10,124
Loans Receivable, Net	1,062,863	981,417
Commercial Portfolio Segment [Member] | Unsecured Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	44,391	46,880
30 - 59 Days Past Due	476	407
60 - 89 Days Past Due	193	0
Greater than 90 Days Past Due	0	0
Total Past Due	669	407
Nonaccrual Loans	213	119
Loans Receivable, Net	45,273	47,406
Real Estate Portfolio Segment [Member] | One-to-Four Family Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	52,968	60,764
30 - 59 Days Past Due	796	603
60 - 89 Days Past Due	7	0
Greater than 90 Days Past Due	0	0
Total Past Due	803	603
Nonaccrual Loans	2,244	2,696
Loans Receivable, Net	56,015	64,063
Real Estate Portfolio Segment [Member] | Commercial Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	41,263	46,161
30 - 59 Days Past Due	179	781
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	179	781
Nonaccrual Loans	3,444	3,739
Loans Receivable, Net	44,886	50,681
Real Estate Portfolio Segment [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	568,724	524,225
30 - 59 Days Past Due	243	2,872
60 - 89 Days Past Due	309	121
Greater than 90 Days Past Due	0	0
Total Past Due	552	2,993
Nonaccrual Loans	10,753	6,775
Loans Receivable, Net	580,029	533,993
Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	372,946	394,691
30 - 59 Days Past Due	2,920	829
60 - 89 Days Past Due	0	298
Greater than 90 Days Past Due	0	0
Total Past Due	2,920	1,127
Nonaccrual Loans	9,105	8,971
Loans Receivable, Net	384,971	404,789
Real Estate Construction Portfolio Segment [Member] | Income Property Multifamily [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	22,814	13,810
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	3,754	7,067
Loans Receivable, Net	26,568	20,877
Real Estate Construction Portfolio Segment [Member] | Owner Occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	22,122	12,790
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	0	0
Nonaccrual Loans	0	0
Loans Receivable, Net	22,122	12,790
Real Estate Construction Portfolio Segment [Member] | Land and Acquisition [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	17,004	17,249
30 - 59 Days Past Due	0	153
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	0	153
Nonaccrual Loans	3,552	7,799
Loans Receivable, Net	20,556	25,201
Real Estate Construction Portfolio Segment [Member] | Residential Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	24,553	19,555
30 - 59 Days Past Due	0	1,390
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	0	1,390
Nonaccrual Loans	1,671	2,986
Loans Receivable, Net	26,224	23,931
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current Loans	164,426	179,753
30 - 59 Days Past Due	860	141
60 - 89 Days Past Due	278	122
Greater than 90 Days Past Due	0	0
Total Past Due	1,138	263
Nonaccrual Loans	1,890	3,207
Loans Receivable, Net	$ 167,454	$ 183,223