Promissory Note Receivable (Narrative) (Details) - USD ($)		12 Months Ended
	Oct. 01, 2020	Jun. 30, 2023	Jun. 30, 2022	Jun. 19, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income		$ 213,000	$ 177,000
Convertible Promissory Note Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amount invested				$ 1,500,000
Interest rate	5.00%
Interest rate for first one year extension	7.00%
Interest rate for second one year extension	9.00%
Interest income		75,000	75,000
Note balance and accrued interest		$ 1,706,000	$ 1,631,000