Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Jun. 30, 2015
Income Tax Disclosure [Abstract]
Deferred tax assets, Inventories	$ 1,034	$ 1,179
Deferred tax assets, Employee medical and other benefits	12,533	11,135
Deferred tax assets, Receivable and other allowances	5,626	5,652
Deferred tax assets, Other accrued liabilities	1,740	2,229
Total deferred tax assets	20,933	20,195
Deferred tax liabilities, Property, plant and equipment	(21,573)	(22,968)
Deferred tax liabilities, Intangible assets	(14,555)	(15,223)
Deferred tax liabilities, Goodwill	(6,117)	(4,869)
Deferred tax liabilities, Other	(121)	(75)
Total deferred tax liabilities	(42,366)	(43,135)
Net deferred tax liability	$ (21,433)	$ (22,940)