Loans and Allowance for Loan Losses - Allowance for loan losses (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
Total ALL	$ 6,407		$ 5,900
Loans Receivable
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated	857		318	360
ALL collectively evaluated	5,550		5,582	5,122
Total ALL	6,407	6,346	5,900	5,482	5,268	5,331
Loans individually evaluated	12,372		18,214	20,386
Loans collectively evaluated	251,438		271,210	275,389
Total loans	263,810		289,424	295,775
Loans Receivable | Commercial
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated				2
ALL collectively evaluated	813		633	629
Total ALL	813	915	633	631	684	667
Loans individually evaluated			49	298
Loans collectively evaluated	12,010		13,241	11,169
Total loans	12,010		13,290	11,467
Loans Receivable | Owner Occupied 1-4
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated	13		14	36
ALL collectively evaluated	531		575	513
Total ALL	544	552	589	549	432	436
Loans individually evaluated	1,035		1,653	1,322
Loans collectively evaluated	45,007		46,892	48,950
Total loans	46,042		48,545	50,272
Loans Receivable | Non-owner Occupied 1-4
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated	30		27	27
ALL collectively evaluated	968		993	891
Total ALL	998	990	1,022	918	1,118	1,330
Loans individually evaluated	3,648		5,917	6,483
Loans collectively evaluated	45,762		44,754	45,310
Total loans	49,410		50,671	51,793
Loans Receivable | Multi-family
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated			24
ALL collectively evaluated	928		1,031	880
Total ALL	928	1,001	1,055	880	888	646
Loans individually evaluated	533		2,891	2,126
Loans collectively evaluated	49,953		59,932	62,079
Total loans	50,486		62,823	64,205
Loans Receivable | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated	767		253	290
ALL collectively evaluated	1,743		1,924	1,810
Total ALL	2,510	2,259	2,177	2,100	1,859	1,788
Loans individually evaluated	6,246		6,233	9,244
Loans collectively evaluated	65,804		76,197	78,262
Total loans	72,050		82,430	87,506
Loans Receivable | Construction
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated
ALL collectively evaluated	34		62	27
Total ALL	34	46	62	27	8	64
Loans individually evaluated
Loans collectively evaluated	5,943		8,928	7,131
Total loans	5,943		8,928	7,131
Loans Receivable | Land
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated	47
ALL collectively evaluated	304		154	182
Total ALL	351	348	154	182	120	264
Loans individually evaluated	820		1,379	751
Loans collectively evaluated	9,133		3,806	4,634
Total loans	9,953		5,185	5,385
Loans Receivable | Consumer and Home Equity
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract]
ALL individually evaluated				5
ALL collectively evaluated	229		208	190
Total ALL	229	235	208	195	159	136
Loans individually evaluated	90		92	162
Loans collectively evaluated	17,826		17,460	17,854
Total loans	$ 17,916		$ 17,552	$ 18,016