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, 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
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
Net income		95,808			95,808
Net pension and postretirement benefit gains (losses), net of tax effect			(5,119)		(5,119)
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
Net income		109,249			109,249
Net pension and postretirement benefit gains (losses), net of tax effect			3,771		3,771
Cash dividends - common stock		(178,063)			(178,063)
Purchase of treasury stock				(609)	(609)
Purchase of treasury stock, shares	(8,000)
Stock-based plans, including excess tax benefits	(294)				(294)
Stock-based plans, including excess tax benefits, shares	45,000
Stock-based compensation expense	2,901				2,901
Balance at Jun. 30, 2013	$ 102,622	$ 1,139,213	$ (8,391)	$ (732,222)	$ 501,222
Balance, shares at Jun. 30, 2013	27,324,000				27,323,721