Quarterly report [Sections 13 or 15(d)]

Note 9 - Stock-based Compensation - Summary of Stock Option Activity (Details)

v3.25.3
Note 9 - Stock-based Compensation - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Oct. 31, 2025
Jan. 31, 2025
Jan. 31, 2024
Outstanding, shares (in shares) 30,750    
Outstanding, weighted average exercise price (in dollars per share) $ 215    
Outstanding, weighted average remaining contractual term (Year) 2 years 3 months 18 days 6 years 4 months 24 days  
Outstanding, aggregate intrinsic value $ 0   $ 0
Forfeited, shares (in shares) 0    
Forfeited, weighted average exercise price (in dollars per share) $ 0    
Expired, shares (in shares) (9,700)    
Expired, weighted average exercise price (in dollars per share) $ 215    
Outstanding, shares (in shares) 21,050 30,750  
Outstanding, weighted average exercise price (in dollars per share) $ 215 $ 215  
Vested and Exercisable, shares (in shares) 21,050    
Vested and Exercisable, weighted average exercise price (in dollars per share) $ 215    
Vested and exercisable, October 31, 2025 (Year) 2 years 3 months 18 days    
Vested and Exercisable, aggregate intrinsic value $ 0