Loans and Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Allowance for loan losses and recorded investment in loans by portfolio class based on impairment method
Individually evaluated for impairment, Loan balance	$ 3,266		$ 4,427
Individually evaluated for impairment, Allowance	87		411
Collectively evaluated for impairment, Loan balance	591,842		507,367
Collectively evaluated for impairment, Allowance	5,273		4,365
Total Loans Balance	595,108		511,794
Total, Allowance	5,360	5,176	4,776	3,739	3,328	2,889
Commercial [Member]
Allowance for loan losses and recorded investment in loans by portfolio class based on impairment method
Individually evaluated for impairment, Loan balance	4		155
Individually evaluated for impairment, Allowance
Collectively evaluated for impairment, Loan balance	24,735		20,471
Collectively evaluated for impairment, Allowance	390		321
Total Loans Balance	24,739		20,626
Total, Allowance	390	356	321	294	252	261
Consumer [Member]
Allowance for loan losses and recorded investment in loans by portfolio class based on impairment method
Individually evaluated for impairment, Loan balance
Individually evaluated for impairment, Allowance
Collectively evaluated for impairment, Loan balance	724		998
Collectively evaluated for impairment, Allowance	19		16
Total Loans Balance	724		998
Total, Allowance	19	22	16	18	19	21
Residential one-to-four family [Member]
Allowance for loan losses and recorded investment in loans by portfolio class based on impairment method
Individually evaluated for impairment, Loan balance	2,569		3,149
Individually evaluated for impairment, Allowance	81		97
Collectively evaluated for impairment, Loan balance	200,977		189,146
Collectively evaluated for impairment, Allowance	1,005		889
Total Loans Balance	203,546		192,295
Total, Allowance	1,086	1,013	986	1,019	986	1,057
Commercial real estate [Member]
Allowance for loan losses and recorded investment in loans by portfolio class based on impairment method
Individually evaluated for impairment, Loan balance
Individually evaluated for impairment, Allowance
Collectively evaluated for impairment, Loan balance	222,974		166,261
Collectively evaluated for impairment, Allowance	2,620		1,969
Total Loans Balance	222,974		166,261
Total, Allowance	2,620	2,302	1,969	1,375	1,414	1,136
Construction [Member]
Allowance for loan losses and recorded investment in loans by portfolio class based on impairment method
Individually evaluated for impairment, Loan balance
Individually evaluated for impairment, Allowance
Collectively evaluated for impairment, Loan balance	13,710		15,198
Collectively evaluated for impairment, Allowance	168		188
Total Loans Balance	13,710		15,198
Total, Allowance	168	163	188	186	147	140
Equity lines of credit [Member]
Allowance for loan losses and recorded investment in loans by portfolio class based on impairment method
Individually evaluated for impairment, Loan balance	693		1,123
Individually evaluated for impairment, Allowance	6		314
Collectively evaluated for impairment, Loan balance	58,498		48,892
Collectively evaluated for impairment, Allowance	369		318
Total Loans Balance	59,191		50,015
Total, Allowance	375	651	632	317	200	236
Indirect auto [Member]
Allowance for loan losses and recorded investment in loans by portfolio class based on impairment method
Individually evaluated for impairment, Loan balance
Individually evaluated for impairment, Allowance
Collectively evaluated for impairment, Loan balance	70,224		66,401
Collectively evaluated for impairment, Allowance	702		664
Total Loans Balance	70,224		66,401
Total, Allowance	$ 702	$ 669	$ 664	$ 524	$ 310	$ 38