Note 8 - Share-based Compensation - Warrant Assumptions (Details) - Warrants [member] |
Jun. 30, 2025 |
Jun. 30, 2024 |
|---|---|---|
| Historical volatility for shares, measurement input [member] | ||
| Statement Line Items [Line Items] | ||
| Unobservable input | 85 | 85 |
| Share price [member] | ||
| Statement Line Items [Line Items] | ||
| Unobservable input | 0.05 | 0.42 |
| Minimum [Member] | Expected term [member] | ||
| Statement Line Items [Line Items] | ||
| Unobservable input | 5 | 5 |
| Minimum [Member] | Risk free interest rate [member] | ||
| Statement Line Items [Line Items] | ||
| Unobservable input | 3.96 | 4.71 |
| Maximum [Member] | Expected term [member] | ||
| Statement Line Items [Line Items] | ||
| Unobservable input | 7 | 7 |
| Maximum [Member] | Risk free interest rate [member] | ||
| Statement Line Items [Line Items] | ||
| Unobservable input | 4.09 | 4.72 |