Quarterly report pursuant to Section 13 or 15(d)

Promissory Note Receivable (Narrative) (Details)

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Promissory Note Receivable (Narrative) (Details) - USD ($)
3 Months Ended 9 Months Ended
Oct. 01, 2020
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2024
Mar. 31, 2023
Jun. 30, 2023
Jun. 19, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Interest income   $ 43,000 $ 23,000 $ 140,000 $ 163,000    
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   22,000 $ 18,000 66,000 $ 56,000    
Note balance and accrued interest non current   $ 1,772,000   $ 1,772,000   $ 1,687,000