Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Unearned ESOP Shares	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2013	$ 101	$ 77,340	$ (7,340)	$ 145,826	$ (3,787)	$ 212,140
Increase (Decrease) in Stockholders' Equity
Net income				7,181		7,181
Other comprehensive income					76	76
Cash dividends declared ($0.32 per share and $0.29 per share for the six months ended June 30, 2015 and June 30, 2014, respectively)				(2,752)		(2,752)
Share-based compensation		1,327				1,327
Allocation of ESOP shares (24,466 shares for six months ended June 30, 2015 and June 30, 2014)		282	245			527
Repurchase of company common stock (199,464 and 170,994 shares for the six months ended June 30, 2015 and June 30, 2014, respectively)	(2)	(3,885)				(3,887)
Balance at Jun. 30, 2014	99	75,064	(7,095)	150,255	(3,711)	214,612
Balance at Mar. 31, 2014					(3,712)
Increase (Decrease) in Stockholders' Equity
Net income						3,719
Other comprehensive income					1	1
Balance at Jun. 30, 2014	99	75,064	(7,095)	150,255	(3,711)	214,612
Balance at Dec. 31, 2014	99	75,229	(6,851)	153,289	(5,388)	216,378
Increase (Decrease) in Stockholders' Equity
Net income				7,363		7,363
Other comprehensive income					60	60
Cash dividends declared ($0.32 per share and $0.29 per share for the six months ended June 30, 2015 and June 30, 2014, respectively)				(2,979)		(2,979)
Share-based compensation		1,328				1,328
Allocation of ESOP shares (24,466 shares for six months ended June 30, 2015 and June 30, 2014)		308	245			553
Repurchase of company common stock (199,464 and 170,994 shares for the six months ended June 30, 2015 and June 30, 2014, respectively)	(2)	(4,337)				(4,339)
Balance at Jun. 30, 2015	97	72,528	(6,606)	157,673	(5,328)	218,364
Balance at Mar. 31, 2015					(5,348)
Increase (Decrease) in Stockholders' Equity
Net income						3,837
Other comprehensive income					20	20
Balance at Jun. 30, 2015	$ 97	$ 72,528	$ (6,606)	$ 157,673	$ (5,328)	$ 218,364