Condensed Consolidated Statement of Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified		Total	Common Stock	Unearned Compensation ESOP	Retained Earnings	Accumulated Other Comprehensive Income (Loss), Net
Beginning balance at Dec. 31, 2011		$ 202,520	$ 126,622	$ (94)	$ 74,256	$ 1,736
Beginning balance, shares at Dec. 31, 2011			15,456,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted and unrestricted stock awards issued, net of forfeitures, shares			86,000
Restricted and unrestricted stock awards issued, net of forfeitures		0	0
Stock option compensation expense		106	106
Exercise of stock options (including tax effect from nonqualified stock options), shares		11,365	12,000
Exercise of stock options (including excess tax benefits from nonqualified stock options)		129	129
Restricted stock compensation expense, shares			10,000
Restricted stock compensation expense		1,185	1,091	94
Excess tax benefit from restricted stock		(93)	(93)
Common stock repurchased and retired, shares			(446,000)
Common stock repurchased		(6,023)	(6,023)
Net income		13,261			13,261
Other comprehensive income (loss), net of tax		8				8
Cash dividends declared on common stock		(12,155)			(12,155)
Common stock issued in business combination		0
Ending balance at Dec. 31, 2012		198,938	121,832		75,362	1,744
Ending balance, shares at Dec. 31, 2012			15,118,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted and unrestricted stock awards issued, net of forfeitures, shares			100,000
Restricted and unrestricted stock awards issued, net of forfeitures		0	0
Stock option compensation expense		71	71
Exercise of stock options (including tax effect from nonqualified stock options), shares		16,553	17,000
Exercise of stock options (including excess tax benefits from nonqualified stock options)		176	176
Restricted stock compensation expense		1,223	1,223
Excess tax benefit from restricted stock		(13)	(13)
Common stock repurchased and retired, shares			(557,000)
Common stock repurchased		(8,825)	(8,825)
Net income		9,575			9,575
Other comprehensive income (loss), net of tax		(2,906)				(2,906)
Cash dividends declared on common stock		(6,672)			(6,672)
Common stock issued in business combination, shares			1,533,000
Common stock issued in business combination		24,195
Ending balance at Dec. 31, 2013		215,762	138,659		78,265	(1,162)
Ending balance, shares at Dec. 31, 2013			16,211,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted and unrestricted stock awards issued, net of forfeitures, shares			121,000
Restricted and unrestricted stock awards issued, net of forfeitures		0	0
Stock option compensation expense		20	20
Exercise of stock options (including tax effect from nonqualified stock options), shares		84,189	84,000
Exercise of stock options (including excess tax benefits from nonqualified stock options)		921	921
Restricted stock compensation expense		1,395	1,395
Excess tax benefit from restricted stock		112	112
Common stock repurchased and retired, shares			(156,000)
Common stock repurchased		(2,601)	(2,601)
Net income		21,014			21,014
Other comprehensive income (loss), net of tax		4,540				4,540
Cash dividends declared on common stock		(12,892)			(12,892)
Common stock issued in business combination, shares			14,000,000
Common stock issued in business combination	[1]	226,235
Ending balance at Dec. 31, 2014		$ 454,506	$ 364,741		$ 86,387	$ 3,378
Ending balance, shares at Dec. 31, 2014			30,260,000

[1] The amount of common stock issued in connection with the merger is net of $489,000 of issuance costs.