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 | ||||