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Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Dec. 24, 2022	Dec. 31, 2022	Jun. 30, 2023	Jun. 30, 2021	Jul. 31, 2017	Aug. 31, 2016
Loss Contingencies [Line Items]
Environmental remediation		$ 2,800	$ 2,788
Legal and other related expenses				$ 12
Environmental Protection Agency (EPA) [Member]
Loss Contingencies [Line Items]
Estimated amount of possible loss					$ 5,500	$ 3,600
Settlement	$ 9,800
Estimated cost of remedial work			$ 3,600