Convertible Promissory Note Receivable (Narrative) (Details) - USD ($) |
3 Months Ended | |||
|---|---|---|---|---|
Oct. 01, 2020 |
Sep. 30, 2021 |
Sep. 30, 2020 |
Jun. 30, 2021 |
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Interest income | $ 36,000 | $ 4,000 | ||
| Convertible Promissory Note Receivable [Member] | ||||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | ||||
| Amount invested | $ 1,500,000 | |||
| Interest rate | 5.00% | |||
| Interest income | 19,000 | |||
| Note balance and accrued interest | $ 1,575,000 | $ 1,556,000 | ||