CONSOLIDATED STATEMENTS OF SHAREHOLDERS’ EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Additional Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Treasury Stock [Member]
Balance at Dec. 31, 2012	$ 372,122	$ 1,808	$ 69,989	$ 338,342	$ (7,472)	$ (30,545)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	22,611	0	0	22,611	0	0
Other comprehensive income (loss)	(13,656)	0	0	0	(13,656)	0
Treasury stock purchase	(162)					(162)
Omnibus Equity Incentive Plan	550	2	548	0	0	0
Cash Dividends	(6,388)	0	0	(6,388)	0	0
Balance at Sep. 30, 2013	375,077	1,810	70,537	354,565	(21,128)	(30,707)
Balance at Jun. 30, 2013	368,403	1,809	70,354	346,093	(19,146)	(30,707)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,472	0	0	8,472	0	0
Other comprehensive income (loss)	(1,982)	0	0	0	(1,982)	0
Omnibus Equity Incentive Plan	184	1	183	0	0	0
Balance at Sep. 30, 2013	375,077	1,810	70,537	354,565	(21,128)	(30,707)
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	24,591	0	0	24,591	0	0
Other comprehensive income (loss)	11,644	0	0	0	11,644	0
Treasury stock purchase	(12,856)					(12,856)
Omnibus Equity Incentive Plan	843	3	840
Cash Dividends	(6,544)	0	0	(6,544)	0	0
Balance at Sep. 30, 2014	403,873	1,814	71,914	375,130	(2,325)	(42,660)
Balance at Jun. 30, 2014	405,746	1,812	71,557	366,858	(4,320)	(30,161)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,272	0	0	8,272	0	0
Other comprehensive income (loss)	1,995	0	0	0	1,995	0
Treasury stock purchase	(12,499)					(12,499)
Omnibus Equity Incentive Plan	359	2	357	0	0	0
Balance at Sep. 30, 2014	$ 403,873	$ 1,814	$ 71,914	$ 375,130	$ (2,325)	$ (42,660)