Benefit And Retirement Plans (Schedule Of Multiemployer Plans) (Details) $ in Thousands	12 Months Ended
Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)
Multiemployer Plan [Line Items]
Company Contributions	$ 109	$ 115	$ 127
Central States SE and SW Areas Pension Fund [Member]
Multiemployer Plan [Line Items]
EIN/Pension Plan Number	366044243
Pension Protection Act Zone Status	Red	Red
Rehabilitation Plan Status	Implemented
Company Contributions	$ 109	$ 115	$ 127
Surcharge Imposed	No
Expiration Date of Collective Bargaining Agreement	Mar. 31, 2025
Number of Company Employees in Plan	7
Steelworkers Pension Trust [Member]
Multiemployer Plan [Line Items]
EIN/Pension Plan Number	236648508
Pension Protection Act Zone Status	Green	Green
Rehabilitation Plan Status	NA
Surcharge Imposed	No

Number of Company Employees in multiemployer plan

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Amount of cost for employer contribution to multiemployer plan. Multiemployer plan includes, but is not limited to, pension plan determined to be individually significant and insignificant and other postretirement benefit plan.

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Employer Identification Number (EIN) or Tax Identification Number (TIN) assigned by Internal Revenue Service (IRS) for multiemployer pension plan determined to be individually significant, in nine-digit numeric format.

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Indicates whether funding improvement plan or rehabilitation plan was implemented or pending for multiemployer pension plan, determined to be individually significant. Acceptable values are "No", "Pending", "Implemented", "Other", and "NA".

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