Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Deferred tax assets, Employee medical and other benefits	$ 7,809	$ 6,407
Deferred tax assets, Receivables	2,332	3,992
Deferred tax assets, Inventories	311	1,112
Deferred tax assets, Other accrued liabilities	2,069	1,029
Total deferred tax assets	12,521	12,540
Deferred tax liabilities, Property, plant and equipment	(16,993)	(15,551)
Deferred tax liabilities, Goodwill	(10,037)	(5,044)
Deferred tax liabilities, Intangible assets	(8,295)	(8,518)
Deferred tax liabilities, Other	(78)	(231)
Total deferred tax liabilities	(35,403)	(29,344)
Net deferred tax liability	$ (22,882)	$ (16,804)