Loans and Allowance - Breakdown of loans (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	$ 298,402		$ 309,082
Allowance for loan losses	(4,036)		(3,564)
Net loans	294,366		305,518
Loans Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	318,055		314,784
Unamortized deferred loan costs	493		484
Undisbursed loans in process	(20,146)		(6,186)
Allowance for loan losses	(4,036)	(3,884)	(3,564)	(3,521)	(3,178)	(4,003)
Net loans	294,366		305,518
Loans Receivable | Construction / Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	26,493		26,506
Allowance for loan losses	(673)	(757)	(649)	(734)	(430)	(1,016)
Loans Receivable | One-to-four family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	144,745		137,402
Allowance for loan losses	(1,821)	(1,534)	(1,423)	(1,390)	(1,472)	(1,986)
Loans Receivable | Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	17,828		19,988
Allowance for loan losses	(297)	(278)	(281)	(283)	(17)	(65)
Loans Receivable | Nonresidential and agricultural land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	103,640		106,433
Allowance for loan losses	(1,102)	(1,179)	(1,077)	(1,091)	(1,226)	(822)
Loans Receivable | Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	20,853		19,549
Allowance for loan losses	(141)	(135)	(132)	(8)	(6)	(70)
Loans Receivable | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans receivables, gross	4,496		4,906
Allowance for loan losses	$ (2)	$ (1)	$ (2)	$ (15)	$ (27)	$ (44)