Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Stock-based Compensation - Summary of Stock Option Activity (Details)

v3.23.3
Note 12 - Stock-based Compensation - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 9 Months Ended 12 Months Ended
Oct. 31, 2023
Jan. 31, 2023
Outstanding, shares (in shares) 116,099  
Outstanding, weighted average exercise price (in dollars per share) $ 214.74  
Outstanding, weighted average remaining contractual term (Year) 7 years 7 months 6 days 8 years 4 months 24 days
Outstanding, aggregate intrinsic value $ 0 $ 0
Granted, shares (in shares) 0  
Granted, weighted average exercise price (in dollars per share) $ 0  
Exercised, shares (in shares) 0  
Exercised, weighted average exercise price (in dollars per share) $ 0  
Forfeited, shares (in shares) (11,330)  
Forfeited, weighted average exercise price (in dollars per share) $ 215  
Expired, shares (in shares) (15,919)  
Expired, weighted average exercise price (in dollars per share) $ 213.13  
Outstanding, shares (in shares) 88,850 116,099
Outstanding, weighted average exercise price (in dollars per share) $ 215 $ 214.74
Vested and Exercisable, shares (in shares) 49,981  
Vested and Exercisable, weighted average exercise price (in dollars per share) $ 215  
Vested and exercisable, weighted average remaining contractual term (Year) 7 years 7 months 6 days  
Vested and Exercisable, aggregate intrinsic value $ 0