Loans and Allowance - Breakdown of loans (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	$ 298,857	$ 309,082
Allowance for loan losses	(3,884)	(3,564)
Net loans	294,973	305,518
Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	308,458	314,784
Unamortized deferred loan costs	487	484
Undisbursed loans in process	(10,088)	(6,186)
Allowance for loan losses	(3,884)	(3,564)	(3,178)	(4,003)
Net loans	294,973	305,518
Loans Receivable | Construction / Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	23,237	26,506
Allowance for loan losses	(757)	(648)	(430)	(1,016)
Loans Receivable | One-to-four family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	134,487	137,402
Allowance for loan losses	(1,534)	(1,423)	(1,472)	(1,986)
Loans Receivable | Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	17,280	19,988
Allowance for loan losses	(278)	(281)	(17)	(65)
Loans Receivable | Nonresidential real estate and agricultural land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	106,555	106,433
Allowance for loan losses	(1,179)	(1,078)	(1,226)	(822)
Loans Receivable | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	22,701	19,549
Allowance for loan losses	(135)	(133)	(6)	(70)
Loans Receivable | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	4,198	4,906
Allowance for loan losses	$ (1)	$ (1)	$ (27)	$ (44)