Consolidated Statement of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Common Stock Warrant [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2013	$ 272,147			$ 878	$ 136,403	$ 545	$ 182,290	$ (48,096)
Balance (in shares) at Dec. 31, 2013		0	127
Net income	10,868						10,868
Other comprehensive income	2,597					2,597
Stock option expense	34				34
Shares issued under stock option plan	433				18		(23)	438
Restricted share activity under stock incentive plans	(130)				(342)			212
Shares issued direct purchases	64				26			38
shares repurchased	(6,675)							(6,675)
Common stock dividends declared	(2,889)						(2,889)
Balance at Jun. 30, 2014	276,449			878	136,139	3,142	190,246	(54,083)
Balance (in shares) at Jun. 30, 2014		0	127
Balance at Dec. 31, 2014	279,505			878	136,266	4,114	200,600	(62,480)
Balance (in shares) at Dec. 31, 2014		0	127
Net income	13,164						13,164
Other comprehensive income	(1,520)					(1,520)
Stock option expense	59				59
Warrant repurchase	(11,979)			(878)	(11,101)
Shares issued under stock option plan	1,261				213		(312)	1,360
Restricted share activity under stock incentive plans	232				(223)		185	270
Shares issued direct purchases	38				17			21
shares repurchased	(1,264)							(1,264)
Common stock dividends declared	(3,468)						(3,468)
Balance at Jun. 30, 2015	$ 276,028			$ 0	$ 125,231	$ 2,594	$ 210,169	$ (62,093)
Balance (in shares) at Jun. 30, 2015		0	127