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, 2015	$ 410,316	$ 1,817	$ 73,396	$ 395,633	$ (9,401)	$ (51,129)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	13,675	0	0	13,675	0	0
Other comprehensive income (loss)	4,342	0	0	0	4,342	0
Omnibus Equity Incentive Plan	171	1	170	0	0	0
Payments for Repurchase of Common Stock	(16,592)	0	0	0	0
Balance at Mar. 31, 2016	411,912	1,818	73,566	409,308	(5,059)	(67,721)
Balance at Dec. 31, 2016	414,395	1,820	74,525	421,826	(14,164)	(69,612)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,369	0	0	9,369	0	0
Other comprehensive income (loss)	3,371	0	0	0	3,371	0
Omnibus Equity Incentive Plan	176	0	176	0	0	0
Payments for Repurchase of Common Stock	(503)	0	0	0	0
Balance at Mar. 31, 2017	$ 426,808	$ 1,820	$ 74,701	$ 431,195	$ (10,793)	$ (70,115)