Consolidated Statements Of Shareholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock Outstanding [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]
Balance at Jun. 30, 2011	$ 517,539	$ 97,197	$ 1,150,683	$ (7,043)	$ (723,298)
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	564,267	100,015	1,208,027	(12,162)	(731,613)
Balance, shares at Jun. 30, 2012		27,287,000
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	501,222	102,622	1,139,213	(8,391)	(732,222)
Balance, shares at Jun. 30, 2013	27,323,721	27,324,000
Net income	74,986		74,986
Net pension and postretirement benefit gains (losses), net of tax effect	330			330
Cash dividends - common stock	(46,988)		(46,988)
Purchase of treasury stock	(3,120)				(3,120)
Purchase of treasury stock, shares		(42,000)
Stock-based plans, including excess tax benefits	(305)	(305)
Stock-based plans, including excess tax benefits, shares		57,000
Stock-based compensation expense	2,472	2,472
Balance at Jun. 30, 2014	$ 528,597	$ 104,789	$ 1,167,211	$ (8,061)	$ (735,342)
Balance, shares at Jun. 30, 2014	27,339,421	27,339,000