Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Income Tax Disclosure [Abstract]
Deferred tax assets, Employee medical and other benefits	$ 7,561	$ 6,638
Deferred tax assets, Operating lease liabilities	5,613	6,553
Deferred tax assets, Section 174 research and development capitalization	4,281	0
Deferred tax assets, Inventories	4,143	1,668
Deferred tax assets, Receivables	3,042	2,756
Deferred tax assets, Intangible assets	1,426	0
Deferred tax assets, Other accrued liabilities	1,600	1,443
Total deferred tax assets	27,666	19,058
Deferred tax liabilities, Property, plant and equipment	(50,106)	(33,738)
Deferred tax liabilities, Goodwill	(19,070)	(15,930)
Deferred tax liabilities, Operating lease right-of-use assets	(5,815)	(6,726)
Deferred tax liabilities, Intangible assets	0	(1,494)
Deferred tax liabilities, Other	0	(59)
Total deferred tax liabilities	(74,991)	(57,947)
Net deferred tax liability	$ (47,325)	$ (38,889)