Note 8 - Equity Transactions and Stock-based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | |
|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares) | 28,333 | |
| Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price (in dollars per share) | $ 0.3 | |
| Share-Based Payment Arrangement, Option [Member] | ||
| Share-Based Payment Arrangement, Expense | $ 39 | $ 49 |
| Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount | $ 191 | |
| Share-Based Payment Arrangement, Option [Member] | Minimum [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 1 year | |
| Share-Based Payment Arrangement, Option [Member] | Maximum [Member] | ||
| Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) | 3 years | |