Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Deferred tax assets, Employee medical and other benefits	$ 6,407	$ 10,349
Deferred tax assets, Receivables	3,992	5,314
Deferred tax assets, Inventories	1,112	1,041
Deferred tax assets, Other accrued liabilities	1,029	1,905
Total deferred tax assets	12,540	18,609
Deferred tax liabilities, Property, plant and equipment	(15,551)	(22,188)
Deferred tax liabilities, Intangible assets	(8,518)	(14,070)
Deferred tax liabilities, Goodwill	(5,044)	(7,092)
Deferred tax liabilities, Other	(231)	(466)
Total deferred tax liabilities	(29,344)	(43,816)
Net deferred tax liability	$ (16,804)	$ (25,207)