Significant Accounting Policies (Details 1) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
|
| Fair value beginning balance | $ 13,000 | |
| Fair value ending balance | 15,000 | |
| Control Investments [Member] | ||
| Fair value beginning balance | 13,000 | |
| Fair value ending balance | 15,000 | |
| Level 3 [Member] | ||
| Fair value beginning balance | 13,000 | $ 7,000 |
| Change in unrealized appreciation | 2,000 | 1,500 |
| Fair value ending balance | 15,000 | 8,500 |
| Level 3 [Member] | Non-affiliate Investments [Member] | ||
| Fair value beginning balance | 0 | 0 |
| Change in unrealized appreciation | 0 | 0 |
| Fair value ending balance | 0 | 0 |
| Level 3 [Member] | Affiliate Investments [Member] | ||
| Fair value beginning balance | 0 | 0 |
| Change in unrealized appreciation | 0 | 0 |
| Fair value ending balance | 0 | 0 |
| Level 3 [Member] | Control Investments [Member] | ||
| Fair value beginning balance | 13,000 | 7,000 |
| Change in unrealized appreciation | 2,000 | 1,500 |
| Fair value ending balance | $ 15,000 | $ 8,500 |