Quarterly report pursuant to Section 13 or 15(d)

Promissory Note Receivable (Narrative) (Details)

v3.24.0.1
Promissory Note Receivable (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Oct. 01, 2020
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Jun. 30, 2023
Jun. 19, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Interest income   $ 42,000 $ 41,000 $ 97,000 $ 140,000    
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 $ 19,000 44,000 $ 38,000    
Note balance and accrued interest non current   $ 1,750,000   $ 1,750,000   $ 1,706,000