Noncovered Loans (Analysis of the Aged Loan Portfolio) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current Loans	$ 2,192,337	$ 1,819,499
30 - 59 Days Past Due	7,845	3,464
60 - 89 Days Past Due	2,665	7,117
Greater than 90 Days Past Due	0	1
Total Past Due	10,510	10,582
Nonaccrual Loans	55,052	89,163
Loans Receivable, Net	2,257,899	1,919,244
Commercial Business [Member] | Secured Debt [Member]
Current Loans	905,270	720,926
30 - 59 Days Past Due	847	919
60 - 89 Days Past Due	579	692
Greater than 90 Days Past Due	0	1
Total Past Due	1,426	1,612
Nonaccrual Loans	9,594	31,919
Loans Receivable, Net	916,290	754,457
Commercial Business [Member] | Unsecured Debt [Member]
Current Loans	57,118	40,455
30 - 59 Days Past Due	1,359	9
60 - 89 Days Past Due	58	0
Greater than 90 Days Past Due	0	0
Total Past Due	1,417	9
Nonaccrual Loans	301	448
Loans Receivable, Net	58,836	40,912
Real Estate One-To-Four Family [Member] | Residential [Member]
Current Loans	61,073	46,167
30 - 59 Days Past Due	239	220
60 - 89 Days Past Due	204	0
Greater than 90 Days Past Due	0	0
Total Past Due	443	220
Nonaccrual Loans	2,157	2,996
Loans Receivable, Net	63,673	49,383
Real Estate Commercial & Multifamily Residential [Member] | Commercial Land [Member]
Current Loans	44,260	18,979
30 - 59 Days Past Due	0	0
60 - 89 Days Past Due	0	1,752
Greater than 90 Days Past Due	0	0
Total Past Due	0	1,752
Nonaccrual Loans	3,872	4,091
Loans Receivable, Net	48,132	24,822
Real Estate Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Current Loans	519,034	426,320
30 - 59 Days Past Due	352	1,208
60 - 89 Days Past Due	10	121
Greater than 90 Days Past Due	0	0
Total Past Due	362	1,329
Nonaccrual Loans	7,135	10,745
Loans Receivable, Net	526,531	438,394
Real Estate Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Current Loans	378,541	318,508
30 - 59 Days Past Due	2,488	497
60 - 89 Days Past Due	931	3,752
Greater than 90 Days Past Due	0	0
Total Past Due	3,419	4,249
Nonaccrual Loans	9,845	8,356
Loans Receivable, Net	391,805	331,113
Construction One-To-Four Family Residential[Member] | Land and Acquisition [Member]
Current Loans	16,640	24,883
30 - 59 Days Past Due	1,084	214
60 - 89 Days Past Due	436	205
Greater than 90 Days Past Due	0	0
Total Past Due	1,520	419
Nonaccrual Loans	7,817	11,604
Loans Receivable, Net	25,977	36,906
Construction One-To-Four Family Residential[Member] | Residential Construction [Member]
Current Loans	22,781	24,655
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	3,164	6,400
Loans Receivable, Net	25,945	31,055
Construction Commercial & Multifamily Residential [Member] | Income Property Multifamily [Member]
Current Loans	5,168	10,666
30 - 59 Days Past Due	1,011	0
60 - 89 Days Past Due	0	0
Greater than 90 Days Past Due	0	0
Total Past Due	1,011	0
Nonaccrual Loans	7,622	7,584
Loans Receivable, Net	13,801	18,250
Construction Commercial & Multifamily Residential [Member] | Owner Occupied [Member]
Current Loans	10,358	11,935
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	10,358	11,935
Consumer [Member]
Current Loans	172,094	176,005
30 - 59 Days Past Due	465	397
60 - 89 Days Past Due	447	595
Greater than 90 Days Past Due	0	0
Total Past Due	912	992
Nonaccrual Loans	3,545	5,020
Loans Receivable, Net	$ 176,551	$ 182,017