v3.26.1
Note 5 - Balance Sheet (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Jan. 31, 2026
Long-Lived Asset, Held and Used, Impairment Loss     $ 0
Depreciation $ 115,000 $ 77,000