Consolidated Statements Of Shareholders' Equity (USD $) In Thousands, except Share data	Common Stock Outstanding [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Jun. 30, 2009	$ 88,962	$ 998,476	$ (9,085)	$ (675,797)	$ 402,556
Balance, shares at Jun. 30, 2009	28,102,000
Net Income		114,969			114,969
Net pension and postretirement benefit gains (losses), net of tax effect			(712)		(712)
Comprehensive income					114,257
Cash dividends - common stock		(33,430)			(33,430)
Purchase of treasury stock				(4,398)	(4,398)
Purchase of treasury stock, shares	(80,000)
Stock-based plans, including excess tax benefits	4,274				4,274
Stock-based plans, including excess tax benefits, shares	146,000
Stock-based compensation expense	1,649				1,649
Balance at Jun. 30, 2010	94,885	1,080,015	(9,797)	(680,195)	484,908
Balance, shares at Jun. 30, 2010	28,168,000
Net Income		106,364			106,364
Net pension and postretirement benefit gains (losses), net of tax effect			2,754		2,754
Comprehensive income					109,118
Cash dividends - common stock		(35,696)			(35,696)
Purchase of treasury stock				(43,103)	(43,103)
Purchase of treasury stock, shares	(810,000)
Stock-based plans, including excess tax benefits	(4)				(4)
Stock-based plans, including excess tax benefits, shares	28,000
Stock-based compensation expense	2,316				2,316
Balance at Jun. 30, 2011	97,197	1,150,683	(7,043)	(723,298)	517,539
Balance, shares at Jun. 30, 2011	27,386,000				27,385,781
Net Income		95,808			95,808
Net pension and postretirement benefit gains (losses), net of tax effect			(5,119)		(5,119)
Comprehensive income					90,689
Cash dividends - common stock		(38,464)			(38,464)
Purchase of treasury stock				(8,315)	(8,315)
Purchase of treasury stock, shares	(143,000)
Stock-based plans, including excess tax benefits	(104)				(104)
Stock-based plans, including excess tax benefits, shares	44,000
Stock-based compensation expense	2,922				2,922
Balance at Jun. 30, 2012	$ 100,015	$ 1,208,027	$ (12,162)	$ (731,613)	$ 564,267
Balance, shares at Jun. 30, 2012	27,287,000				27,286,861