CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2013	$ 386,195	$ 1,811	$ 71,074	$ 357,083	$ (13,969)	$ (29,804)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	16,319	0	0	16,319	0	0
Other comprehensive income (loss)	9,649	0	0	0	9,649	0
Omnibus Equity Incentive Plan	484	1	483	0	0	0
Payments for Repurchase of Common Stock	(357)		0	0	0
Dividends, Common Stock, Cash	(6,544)	0	0	(6,544)	0	0
Balance at Jun. 30, 2014	405,746	1,812	71,557	366,858	(4,320)	(30,161)
Balance at Mar. 31, 2014	399,329	1,812	71,315	364,914	(8,551)	(30,161)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,488	0	0	8,488	0	0
Other comprehensive income (loss)	4,231	0	0	0	4,231	0
Omnibus Equity Incentive Plan	242	0	242	0	0	0
Dividends, Common Stock, Cash	(6,544)			(6,544)
Balance at Jun. 30, 2014	405,746	1,812	71,557	366,858	(4,320)	(30,161)
Balance at Dec. 31, 2014	394,214	1,815	72,405	377,970	(14,529)	(43,447)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	14,684	0	0	14,684	0	0
Other comprehensive income (loss)	481	0	0	0	481	0
Omnibus Equity Incentive Plan	342	1	341	0	$ 0	0
Payments for Repurchase of Common Stock	(4,372)		0	0
Dividends, Common Stock, Cash	(6,291)			(6,291)	$ 0	0
Balance at Jun. 30, 2015	399,058	1,816	72,746	386,363	(14,048)	(47,819)
Balance at Mar. 31, 2015	409,027	1,815	72,576	385,731	(7,303)	(43,792)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,923	0	0	6,923	0	0
Other comprehensive income (loss)	(6,745)	0	0	0	(6,745)	0
Omnibus Equity Incentive Plan	171	1	170	$ 0	0	0
Payments for Repurchase of Common Stock	(4,027)	0	0		0
Dividends, Common Stock, Cash	(6,291)			$ (6,291)
Balance at Jun. 30, 2015	$ 399,058	$ 1,816	$ 72,746	$ 386,363	$ (14,048)	$ (47,819)