Note 18 - Related-Party Transactions (Details Textual) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Accounting and Tax Services [Member] | Director [Member] | ||||
| Related Party Transaction, Amounts of Transaction | $ 4,399 | $ 0 | $ 14,231 | $ 4,000 |