Note 2 - Convertible Notes Payable - Schedule of Detachable Warrants (Details) - USD ($) |
12 Months Ended | ||||
|---|---|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|||
| Warrants (in shares) | 25,003 | 25,003 | 25,003 | ||
| Warrants, weighted average exercise price (in dollars per share) | $ 20 | $ 20 | $ 20 | ||
| Warrants, remaining life (Year) | 2 years 5 months 23 days | 3 years 5 months 23 days | 4 years 5 months 23 days | ||
| Warrants, intrinsic value | [1] | $ 0 | $ 0 | $ 1,010,000 | |
| |||||