Note 16 - Loss Per Common Share (Details Textual) - Share-Based Payment Arrangement, Option [Member] - $ / shares |
3 Months Ended | |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 37,141,667 | 39,794,167 |
| Minimum [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 0.05 | $ 0.05 |
| Maximum [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in dollars per share) | $ 0.38 | $ 0.38 |