Loans and Allowance - Information regarding breakdown of balance in allowance for loan losses and recorded investment in loans (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011
Allowance for losses:
Balances at end of period	$ 4,036		$ 3,564
Loans:
Balances at end of period	298,402		309,082
Loans Receivable
Allowance for losses:
Individually evaluated for impairment:	1,106		794
Collectively evaluated for impairment:	2,930		2,770
Loans acquired with a deteriorated credit quality:
Balances at end of period	4,036	3,884	3,564	3,521	3,178	4,003
Loans:
Individually evaluated for impairment:	15,624		14,228
Collectively evaluated for impairment:	299,442		297,453
Loans acquired with a deteriorated credit quality:	2,989		3,103
Balances at end of period	318,055		314,784
Loans Receivable | Construction / Land
Allowance for losses:
Individually evaluated for impairment:	196		195
Collectively evaluated for impairment:	477		453
Loans acquired with a deteriorated credit quality:
Balances at end of period	673	757	649	734	430	1,016
Loans:
Individually evaluated for impairment:	4,530		4,752
Collectively evaluated for impairment:	21,625		21,453
Loans acquired with a deteriorated credit quality:	338		301
Balances at end of period	26,493		26,506
Loans Receivable | 1-4 Family
Allowance for losses:
Individually evaluated for impairment:	526		310
Collectively evaluated for impairment:	1,295		1,113
Loans acquired with a deteriorated credit quality:
Balances at end of period	1,821	1,534	1,423	1,390	1,472	1,986
Loans:
Individually evaluated for impairment:	5,491		4,517
Collectively evaluated for impairment:	137,814		131,465
Loans acquired with a deteriorated credit quality:	1,440		1,420
Balances at end of period	144,745		137,402
Loans Receivable | Multi-Family
Allowance for losses:
Individually evaluated for impairment:	196		196
Collectively evaluated for impairment:	101		85
Loans acquired with a deteriorated credit quality:
Balances at end of period	297	278	281	283	17	65
Loans:
Individually evaluated for impairment:	1,088		1,104
Collectively evaluated for impairment:	16,255		18,433
Loans acquired with a deteriorated credit quality:	485		451
Balances at end of period	17,828		19,988
Loans Receivable | Nonresidential and agricultural land
Allowance for losses:
Individually evaluated for impairment:	97
Collectively evaluated for impairment:	1,005		1,078
Loans acquired with a deteriorated credit quality:
Balances at end of period	1,102	1,179	1,077	1,091	1,226	822
Loans:
Individually evaluated for impairment:	4,127		3,278
Collectively evaluated for impairment:	98,814		102,292
Loans acquired with a deteriorated credit quality:	699		863
Balances at end of period	103,640		106,433
Loans Receivable | Commercial
Allowance for losses:
Individually evaluated for impairment:	91		93
Collectively evaluated for impairment:	50		40
Loans acquired with a deteriorated credit quality:
Balances at end of period	141	135	132	8	6	70
Loans:
Individually evaluated for impairment:	377		565
Collectively evaluated for impairment:	20,472		18,946
Loans acquired with a deteriorated credit quality:	4		38
Balances at end of period	20,853		19,549
Loans Receivable | Consumer
Allowance for losses:
Individually evaluated for impairment:
Collectively evaluated for impairment:	2		1
Loans acquired with a deteriorated credit quality:
Balances at end of period	2	1	2	15	27	44
Loans:
Individually evaluated for impairment:	11		12
Collectively evaluated for impairment:	4,462		4,864
Loans acquired with a deteriorated credit quality:	23		30
Balances at end of period	$ 4,496		$ 4,906