Loans (Details 7) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	$ 3,923	$ 15,538
60-89 Days Past Due	2,203	6,516
Greater than 90 Days Past Due	42,056	104,851
Total Past Due	48,182	126,905
Current Loans	1,037,974	1,293,291
Total Loans	1,086,156	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	2,236	11,270
60-89 Days Past Due	960	3,429
Greater than 90 Days Past Due	32,111	75,544
Total Past Due	35,307	90,243
Current Loans	776,861	997,543
Total Loans	812,168	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	1,995	2,878
60-89 Days Past Due	784	1,928
Greater than 90 Days Past Due	4,495	20,124
Total Past Due	7,274	24,930
Current Loans	569,975	642,445
Total Loans	577,249	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	158	1,405
Greater than 90 Days Past Due	1,630	4,564
Total Past Due	1,788	5,969
Current Loans	79,135	115,022
Total Loans	80,923	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		6,820
60-89 Days Past Due	176	971
Greater than 90 Days Past Due	19,942	41,151
Total Past Due	20,118	48,942
Current Loans	118,070	227,256
Total Loans	138,188	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	83	167
60-89 Days Past Due		530
Greater than 90 Days Past Due	6,044	9,705
Total Past Due	6,127	10,402
Current Loans	9,681	12,820
Total Loans	15,808	23,222
Construction Loans [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	54	979
60-89 Days Past Due		1,718
Greater than 90 Days Past Due	7,398	24,608
Total Past Due	7,452	27,305
Current Loans	25,400	36,562
Total Loans	32,852	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	54	979
60-89 Days Past Due		1,718
Greater than 90 Days Past Due	7,398	24,608
Total Past Due	7,452	27,305
Current Loans	20,866	32,034
Total Loans	28,318	59,339
Construction Loans [Member] | Multifamily and nonresidential [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
60-89 Days Past Due
Current Loans	4,534	4,528
Total Loans	4,534	4,528
Consumer Loans [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	1,617	2,666
60-89 Days Past Due	515	1,369
Greater than 90 Days Past Due	2,518	4,366
Total Past Due	4,650	8,401
Current Loans	209,943	229,996
Total Loans	214,593	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	1,135	1,485
60-89 Days Past Due	475	601
Greater than 90 Days Past Due	2,071	2,749
Total Past Due	3,681	4,835
Current Loans	173,549	186,992
Total Loans	177,230	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	35	73
60-89 Days Past Due	7	13
Greater than 90 Days Past Due	83	87
Total Past Due	125	173
Current Loans	7,523	8,760
Total Loans	7,648	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
Greater than 90 Days Past Due	8	479
Total Past Due	8	663
Current Loans	4,934	5,237
Total Loans	4,942	5,900
Consumer Loans [Member] | Recreational vehicles [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	447	867
60-89 Days Past Due	32	754
Greater than 90 Days Past Due	353	1,044
Total Past Due	832	2,665
Current Loans	21,418	25,865
Total Loans	22,250	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		57
60-89 Days Past Due	1	1
Greater than 90 Days Past Due	3	7
Total Past Due	4	65
Current Loans	2,519	3,142
Total Loans	2,523	3,207
Commercial Loans [Member]
Presentation of an age analysis of past-due loans, segregated by class of loans
30-59 Days Past Due	16	623
60-89 Days Past Due	728
Greater than 90 Days Past Due	29	333
Total Past Due	773	956
Current Loans	25,770	29,190
Total Loans	26,543	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	16	554
Greater than 90 Days Past Due	23	96
Total Past Due	39	650
Current Loans	24,204	24,470
Total Loans	24,243	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	728
Greater than 90 Days Past Due	6	237
Total Past Due	734	306
Current Loans	1,566	4,720
Total Loans	$ 2,300	$ 5,026