CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2014	$ 351,374	$ 15,151	$ 20,500	$ 215,873	$ 141,206	$ (35,751)	$ (5,605)
Net income	18,392				18,392
Other comprehensive income, net of tax	1,867						1,867
Common dividends declared - $0.40 per share in 2015 and $0.44 per share in 2016	(7,447)				(7,447)
Preferred dividends declared - $15.00 per share	(105)				(105)
Preferred stock converted to common stock - 882,096 shares		(12,784)	882	11,902
Redemption of preferred stock - 2,367 shares	(2,367)	$ (2,367)
Equity-based compensation expense	43			43
Common stock options exercised - 3,000 shares in 2015 and 11,730 shares in 2016	41			(10)		51
Restricted stock awards - 22,561 shares in 2015 and 15,587 shares in 2016	191			(192)		383
Issuance of treasury stock to 401(k) plan - 18,275 shares in 2015 and 16,290 shares in 2016	316			5		311
Purchase of treasury shares - 1,018,726 shares at $17.13 per share in 2015 and 1,152,776 shares at $20.00 per share in 2016	(17,478)					(17,478)
Balance at Sep. 30, 2015	344,827		21,382	227,621	152,046	(52,484)	(3,738)
Balance at Jun. 30, 2015							(6,198)
Net income	6,259
Other comprehensive income, net of tax	2,460
Balance at Sep. 30, 2015	344,827		21,382	227,621	152,046	(52,484)	(3,738)
Balance at Dec. 31, 2015	343,017		21,382	227,692	155,647	(56,457)	(5,247)
Net income	18,722				18,722
Other comprehensive income, net of tax	5,617						5,617
Common dividends declared - $0.40 per share in 2015 and $0.44 per share in 2016	(7,680)				(7,680)
Equity-based compensation expense	144			144
Common stock options exercised - 3,000 shares in 2015 and 11,730 shares in 2016	182			(23)		205
Restricted stock awards - 22,561 shares in 2015 and 15,587 shares in 2016	296			26		270
Issuance of treasury stock to 401(k) plan - 18,275 shares in 2015 and 16,290 shares in 2016	332			45		287
Purchase of treasury shares - 1,018,726 shares at $17.13 per share in 2015 and 1,152,776 shares at $20.00 per share in 2016	(23,094)					(23,094)
Balance at Sep. 30, 2016	337,536		21,382	227,884	166,689	(78,789)	370
Balance at Jun. 30, 2016							(3,017)
Net income	6,383
Other comprehensive income, net of tax	3,387
Balance at Sep. 30, 2016	$ 337,536		$ 21,382	$ 227,884	$ 166,689	$ (78,789)	$ 370