Investment in COF 2 (Details) - USD ($) |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2022 |
Dec. 31, 2021 |
|
| Investment in COF 2 (Details) | ||
| Assets | $ 1,648,000 | $ 1,847,000 |
| Liabilities | 300,000 | 356,000 |
| Partners' capital | 1,348,000 | 1,492,000 |
| Revenue | 205,000 | 401,000 |
| Expenses | 348,000 | 606,000 |
| Net (loss) income | $ (144,000) | $ (205,000) |