CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Capital	Retained Earnings	Accumulated Other Comprehensive Income/(Loss)	Treasury Stock
Balance at Jun. 30, 2011	$ 342,665	$ 1,806	$ 68,944	$ 304,358	$ 540	$ (32,983)
Increase (Decrease) in Shareholders' Equity
Net income	9,814			9,814
Change in net unrealized gains/(losses) on securities available for-sale, net of tax	3,793				3,793
Change in funded status of retirement plans, net of tax	303				303
Balance at Sep. 30, 2011	356,575	1,806	68,944	314,172	4,636	(32,983)
Balance at Dec. 31, 2010	321,717	1,806	68,944	293,319	(9,369)	(32,983)
Increase (Decrease) in Shareholders' Equity
Net income	27,034			27,034
Change in net unrealized gains/(losses) on securities available for-sale, net of tax	13,097				13,097
Change in funded status of retirement plans, net of tax	908				908
Cash Dividends, $.47 per share	(6,181)			(6,181)
Balance at Sep. 30, 2011	356,575	1,806	68,944	314,172	4,636	(32,983)
Balance at Dec. 31, 2011	346,961	1,806	69,328	318,130	(10,494)	(31,809)
Increase (Decrease) in Shareholders' Equity
Net income	24,239			24,239
Change in net unrealized gains/(losses) on securities available for-sale, net of tax	2,258				2,258
Change in funded status of retirement plans, net of tax	1,159				1,159
Omnibus Equity Incentive Plan	366	2	364
Cash Dividends, $.47 per share	(6,222)			(6,222)
Balance at Sep. 30, 2012	368,761	1,808	69,692	336,147	(7,077)	(31,809)
Balance at Jun. 30, 2012	358,287	1,807	69,571	328,056	(9,338)	(31,809)
Increase (Decrease) in Shareholders' Equity
Net income	8,091			8,091
Change in net unrealized gains/(losses) on securities available for-sale, net of tax	1,874				1,874
Change in funded status of retirement plans, net of tax	387				387
Omnibus Equity Incentive Plan	122	1	121
Balance at Sep. 30, 2012	$ 368,761	$ 1,808	$ 69,692	$ 336,147	$ (7,077)	$ (31,809)