v3.26.1
Note 5 - Balance Sheet (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Jan. 31, 2026
Long-Lived Asset, Held and Used, Impairment Loss         $ 0
Depreciation $ 85,000 $ 72,000 $ 174,000 $ 148,000