Loans (Details 6) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	$ 5,224	$ 15,538
60-89 Days Past Due	7,157	6,516
Greater than 90 Days Past Due	97,404	104,851
Total Past Due	109,785	126,905
Current Loans	1,169,403	1,293,291
Total Loans	1,279,188	1,420,196
Permanent Real Estate Loans [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	2,895	11,270
60-89 Days Past Due	5,738	3,429
Greater than 90 Days Past Due	74,620	75,544
Total Past Due	83,253	90,243
Current Loans	899,464	997,543
Total Loans	982,718	1,087,786
Permanent Real Estate Loans [Member] | One-to four-family residential [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	2,187	2,878
60-89 Days Past Due	947	1,928
Greater than 90 Days Past Due	21,131	20,124
Total Past Due	24,265	24,930
Current Loans	611,491	642,445
Total Loans	635,756	667,375
Permanent Real Estate Loans [Member] | Multifamily residential [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	228	1,405
60-89 Days Past Due	95
Greater than 90 Days Past Due	9,018	4,564
Total Past Due	9,341	5,969
Current Loans	89,204	115,022
Total Loans	98,545	120,991
Permanent Real Estate Loans [Member] | Nonresidential [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	417	6,820
60-89 Days Past Due	4,685	971
Greater than 90 Days Past Due	36,155	41,151
Total Past Due	41,257	48,942
Current Loans	188,046	227,256
Total Loans	229,303	276,198
Permanent Real Estate Loans [Member] | Land [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	63	167
60-89 Days Past Due	11	530
Greater than 90 Days Past Due	8,316	9,705
Total Past Due	8,390	10,402
Current Loans	10,723	12,820
Total Loans	19,113	23,222
Construction Loans [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due		979
60-89 Days Past Due	76	1,718
Greater than 90 Days Past Due	17,609	24,608
Total Past Due	17,685	27,305
Current Loans	28,920	36,562
Total Loans	46,604	63,867
Construction Loans [Member] | One-to four-family residential [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due		979
60-89 Days Past Due	76	1,718
Greater than 90 Days Past Due	17,609	24,608
Total Past Due	17,685	27,305
Current Loans	24,392	32,034
Total Loans	42,077	59,339
Construction Loans [Member] | Multifamily and nonresidential construction [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due
60-89 Days Past Due
Greater than 90 Days Past Due
Total Past Due
Current Loans	4,528	4,528
Total Loans	4,528	4,528
Consumer Loans [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	2,218	2,666
60-89 Days Past Due	1,343	1,369
Greater than 90 Days Past Due	4,831	4,366
Total Past Due	8,392	8,401
Current Loans	216,675	229,996
Total Loans	225,067	238,397
Consumer Loans [Member] | Home Equity [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	1,048	1,485
60-89 Days Past Due	453	601
Greater than 90 Days Past Due	4,006	2,749
Total Past Due	5,507	4,835
Current Loans	178,429	186,992
Total Loans	183,936	191,827
Consumer Loans [Member] | Auto [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	37	73
60-89 Days Past Due	16	13
Greater than 90 Days Past Due	54	87
Total Past Due	107	173
Current Loans	7,801	8,760
Total Loans	7,908	8,933
Consumer Loans [Member] | Marine [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due		184
60-89 Days Past Due	173
Greater than 90 Days Past Due	169	479
Total Past Due	342	663
Current Loans	5,144	5,237
Total Loans	5,486	5,900
Consumer Loans [Member] | Recreational vehicle [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	978	867
60-89 Days Past Due	700	754
Greater than 90 Days Past Due	582	1,044
Total Past Due	2,260	2,665
Current Loans	22,759	25,865
Total Loans	25,019	28,530
Consumer Loans [Member] | Other [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	155	57
60-89 Days Past Due	1	1
Greater than 90 Days Past Due	20	7
Total Past Due	176	65
Current Loans	2,542	3,142
Total Loans	2,718	3,207
Commercial Loans [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	111	623
60-89 Days Past Due
Greater than 90 Days Past Due	344	333
Total Past Due	455	956
Current Loans	24,344	29,190
Total Loans	24,799	30,146
Commercial Loans [Member] | Secured [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	111	554
60-89 Days Past Due
Greater than 90 Days Past Due	208	96
Total Past Due	319	650
Current Loans	21,465	24,470
Total Loans	21,784	25,120
Commercial Loans [Member] | Unsecured [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due		69
60-89 Days Past Due
Greater than 90 Days Past Due	136	237
Total Past Due	136	306
Current Loans	2,879	4,720
Total Loans	$ 3,015	$ 5,026