Loans, Allowance for loan losses (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	$ 1,018	$ 1,254
Allowance for loan losses, ending balance: collectively evaluated for impairment	3,230	3,201
Allowance for loan losses, ending balance	4,248	4,455
Loans receivables, ending balance: individually evaluated for impairment	11,993	13,619
Loans receivable, ending balance: collectively evaluated for impairment	317,308	288,690
Loans receivable, ending balance	329,301	302,309
Allowance for loan losses [Roll Forward]
Beginning Allowance	4,455	4,436
Charge-offs	(5,031)	(4,802)
Recoveries	299	221
Provision	4,525	4,600
Ending Allowance	4,248	4,455
One-to four- family [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	392	541
Allowance for loan losses, ending balance: collectively evaluated for impairment	1,025	576
Allowance for loan losses, ending balance	1,417	1,117
Loans receivables, ending balance: individually evaluated for impairment	6,016	8,260
Loans receivable, ending balance: collectively evaluated for impairment	89,768	88,045
Loans receivable, ending balance	95,784	96,305
Allowance for loan losses [Roll Forward]
Beginning Allowance	1,117	909
Charge-offs	(2,740)	(834)
Recoveries	4	11
Provision	3,036	1,031
Ending Allowance	1,417	1,117
Home equity [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	247	447
Allowance for loan losses, ending balance: collectively evaluated for impairment	750	979
Allowance for loan losses, ending balance	997	1,426
Loans receivables, ending balance: individually evaluated for impairment	1,731	1,784
Loans receivable, ending balance: collectively evaluated for impairment	33,633	37,872
Loans receivable, ending balance	35,364	39,656
Allowance for loan losses [Roll Forward]
Beginning Allowance	1,426	1,480
Charge-offs	(1,084)	(1,652)
Recoveries	158	10
Provision	497	1,588
Ending Allowance	997	1,426
Commercial and multifamily [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	70	38
Allowance for loan losses, ending balance: collectively evaluated for impairment	422	931
Allowance for loan losses, ending balance	492	969
Loans receivables, ending balance: individually evaluated for impairment	2,127	2,003
Loans receivable, ending balance: collectively evaluated for impairment	131,493	104,013
Loans receivable, ending balance	133,620	106,016
Allowance for loan losses [Roll Forward]
Beginning Allowance	969	664
Charge-offs	(503)	(1,353)
Recoveries	83	96
Provision	(57)	1,562
Ending Allowance	492	969
Construction and land [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	25	37
Allowance for loan losses, ending balance: collectively evaluated for impairment	192	68
Allowance for loan losses, ending balance	217	105
Loans receivables, ending balance: individually evaluated for impairment	571	902
Loans receivable, ending balance: collectively evaluated for impairment	24,887	16,903
Loans receivable, ending balance	25,458	17,805
Allowance for loan losses [Roll Forward]
Beginning Allowance	105	205
Charge-offs	(222)	(159)
Recoveries	0	0
Provision	334	59
Ending Allowance	217	105
Manufactured homes [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	117	11
Allowance for loan losses, ending balance: collectively evaluated for impairment	143	279
Allowance for loan losses, ending balance	260	290
Loans receivables, ending balance: individually evaluated for impairment	654	122
Loans receivable, ending balance: collectively evaluated for impairment	15,578	18,322
Loans receivable, ending balance	16,232	18,444
Allowance for loan losses [Roll Forward]
Beginning Allowance	290	293
Charge-offs	(152)	(239)
Recoveries	11	8
Provision	111	228
Ending Allowance	260	290
Other consumer [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	22	48
Allowance for loan losses, ending balance: collectively evaluated for impairment	124	165
Allowance for loan losses, ending balance	146	213
Loans receivables, ending balance: individually evaluated for impairment	55	101
Loans receivable, ending balance: collectively evaluated for impairment	8,595	10,819
Loans receivable, ending balance	8,650	10,920
Allowance for loan losses [Roll Forward]
Beginning Allowance	213	309
Charge-offs	(286)	(255)
Recoveries	33	53
Provision	186	106
Ending Allowance	146	213
Commercial business [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	145	132
Allowance for loan losses, ending balance: collectively evaluated for impairment	73	122
Allowance for loan losses, ending balance	218	254
Loans receivables, ending balance: individually evaluated for impairment	839	447
Loans receivable, ending balance: collectively evaluated for impairment	13,354	12,716
Loans receivable, ending balance	14,193	13,163
Allowance for loan losses [Roll Forward]
Beginning Allowance	254	163
Charge-offs	(44)	(310)
Recoveries	10	43
Provision	(2)	358
Ending Allowance	218	254
Unallocated [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Allowance for loan losses, ending balance: individually evaluated for impairment	0	0
Allowance for loan losses, ending balance: collectively evaluated for impairment	501	81
Allowance for loan losses, ending balance	501	81
Loans receivables, ending balance: individually evaluated for impairment	0	0
Loans receivable, ending balance: collectively evaluated for impairment	0	0
Loans receivable, ending balance	0	0
Allowance for loan losses [Roll Forward]
Beginning Allowance	81	413
Charge-offs	0	0
Recoveries	0	0
Provision	420	(332)
Ending Allowance	501	81
Real Estate Loans [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Loans receivable, ending balance	290,226	259,782
Real Estate Loans [Member] | One-to four- family [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Loans receivable, ending balance	95,784	96,305
Real Estate Loans [Member] | Home equity [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Loans receivable, ending balance	35,364	39,656
Real Estate Loans [Member] | Commercial and multifamily [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Loans receivable, ending balance	133,620	106,016
Real Estate Loans [Member] | Construction and land [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Loans receivable, ending balance	25,458	17,805
Consumer Loans [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Loans receivable, ending balance	24,882	29,364
Consumer Loans [Member] | Manufactured homes [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Loans receivable, ending balance	16,232	18,444
Consumer Loans [Member] | Other consumer [Member]
Allowance for loan losses, allowance and recorded investment [Abstract]
Loans receivable, ending balance	$ 8,650	$ 10,920