Note 3 - Revenue Recognition - Schedule of Sales Returns and Allowances and Accrual Activity (Details) - USD ($) |
3 Months Ended | 12 Months Ended |
|---|---|---|
May 31, 2026 |
Feb. 28, 2026 |
|
| Beginning Balance | $ 265,000 | $ 310,000 |
| Accrued Allowances and Adjustments | (38,000) | (45,000) |
| Ending Balance | $ 227,000 | $ 265,000 |