Note 10 - Financial Instruments - Recurring Fair Value Measurements (Details) - USD ($) |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Derivative | $ 0 | $ 84,510 |
| Derivative liabilities, current portion | 352,060 | 0 |
| Freight Forward Agreements [Member] | Fair Value, Recurring [Member] | ||
| Derivative | 0 | |
| Derivative liabilities, current portion | 0 | |
| Freight Forward Agreements [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | ||
| Derivative | 84,510 | |
| Derivative liabilities, current portion | 352,060 | |
| Freight Forward Agreements [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | ||
| Derivative | 84,510 | |
| Derivative liabilities, current portion | 352,060 | |
| Freight Forward Agreements [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | ||
| Derivative | $ 0 | |
| Derivative liabilities, current portion | $ 0 |