Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Income Tax Disclosure [Abstract]
Deferred tax assets, Inventories	$ 1,179	$ 720
Deferred tax assets, Employee medical and other benefits	11,135	10,149
Deferred tax assets, Receivable and other allowances	5,652	4,410
Deferred tax assets, Intangible assets	0	482
Deferred tax assets, Other accrued liabilities	2,229	2,413
Total deferred tax assets	20,195	18,174
Deferred tax liabilities, Property, plant and equipment	(22,968)	(21,307)
Deferred tax liabilities, Intangible assets	(15,223)	0
Deferred tax liabilities, Goodwill	(4,869)	(4,212)
Deferred tax liabilities, Other	(75)	(79)
Total deferred tax liabilities	(43,135)	(25,598)
Net deferred tax liability	$ (22,940)	$ (7,424)