Note 7 - Distributions (Details Textual) - Dividend Reinvestment Plan [Member] - $ / shares |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| O 2026 A Dividends [Member] | ||
| Distribution Made to Limited Liability Company (LLC) Member, Distributions Declared, Per Unit (in dollars per share) | $ 2,419 | |
| O 2025 A Dividends [Member] | ||
| Distribution Made to Limited Liability Company (LLC) Member, Distributions Declared, Per Unit (in dollars per share) | $ 0 | |