Consolidated Statement Of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income Gain/(Loss) [Member]	Treasury Stock [Member]	Total
Beginning balance, Shares at Dec. 31, 2015	20,006,802
Beginning balance at Dec. 31, 2015	$ 21,138	$ 121,966	$ 173,210	$ (1,290)	$ (18,926)	$ 296,098
Dividends declared:
Preferred			(1)			(1)
Common			(3,117)			(3,117)
Net common stock issued under employee plans and related tax expense	$ 86	327				413
Net common stock issued under employee plans and related tax expense, shares	85,585
Other comprehensive income, net of tax				2,793		2,793
Treasury shares purchased					(21,107)	(21,107)
Treasury shares purchased, shares	(1,341,604)
Net income			7,281			7,281
Ending balance, Shares at Jun. 30, 2016	18,750,783
Ending balance at Jun. 30, 2016	$ 21,224	122,293	177,373	1,503	(40,033)	282,360
Beginning balance, Shares at Dec. 31, 2016	18,674,727
Beginning balance at Dec. 31, 2016	$ 21,231	123,112	184,840	(907)	(41,647)	286,629
Dividends declared:
Preferred			(1)			(1)
Common			(2,975)			(2,975)
Net common stock issued under employee plans and related tax expense	$ 29	660				689
Net common stock issued under employee plans and related tax expense, shares	29,638
Other comprehensive income, net of tax				615		615
Treasury shares purchased					(508)	(508)
Treasury shares purchased, shares	(18,092)
Net income			11,097			11,097
Ending balance, Shares at Jun. 30, 2017	18,686,273
Ending balance at Jun. 30, 2017	$ 21,260	$ 123,772	$ 192,961	$ (292)	$ (42,155)	$ 295,546