Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021
Income Tax Disclosure [Abstract]
Deferred tax assets, Employee medical and other benefits	$ 6,638	$ 6,853
Deferred tax assets, Operating lease liabilities	6,553	5,181
Deferred tax assets, Receivables	2,756	2,175
Deferred tax assets, Inventories	1,668	3,003
Deferred tax assets, Other accrued liabilities	1,443	1,719
Total deferred tax assets	19,058	18,931
Deferred tax liabilities, Property, plant and equipment	(33,738)	(31,052)
Deferred tax liabilities, Goodwill	(15,930)	(14,174)
Deferred tax liabilities, Operating lease right-of-use assets	(6,726)	(5,298)
Deferred tax liabilities, Intangible assets	(1,494)	(7,076)
Deferred tax liabilities, Other	(59)	(33)
Total deferred tax liabilities	(57,947)	(57,633)
Net deferred tax liability	$ (38,889)	$ (38,702)