Consolidated Statements of Stockholders' Equity (unaudited) - USD ($) $ in Thousands	Common Stock	Surplus	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2015	$ 174	$ 278,333	$ 72,243		$ (9,622)	$ 341,128
Increase (Decrease) in Stockholders' Equity
Net income			8,626			8,626
Shares issued under the dividend reinvestment plan		221				221
Stock awards granted and distributed	1	(11)		10
Stock awards forfeited		50		(50)
Repurchase of surrendered stock from vesting of restricted stock awards				(291)		(291)
Share based compensation expense		506				506
Cash dividend declared, $0.23 per share			(4,017)			(4,017)
Other comprehensive income, net of deferred income taxes					4,765	4,765
Balance at Mar. 31, 2016	175	279,099	76,852	(331)	(4,857)	350,938
Balance at Dec. 31, 2016	191	329,427	91,594	(161)	(13,064)	407,987
Increase (Decrease) in Stockholders' Equity
Net income			9,171			9,171
Shares issued under the dividend reinvestment plan		222				222
Shares issued for trust preferred securities conversions (529,292 shares)	5	14,944				14,949
Stock awards granted and distributed	1	(374)		373
Stock awards forfeited		13		(13)
Repurchase of surrendered stock from vesting of restricted stock awards				(221)		(221)
Share based compensation expense		610				610
Cash dividend declared, $0.23 per share			(4,541)			(4,541)
Other comprehensive income, net of deferred income taxes					1,281	1,281
Balance at Mar. 31, 2017	$ 197	$ 344,842	$ 96,224	$ (22)	$ (11,783)	$ 429,458