Quarterly report pursuant to Section 13 or 15(d)

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

v3.23.1
Note 12 - Stock-based Compensation - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Apr. 30, 2023
Jan. 31, 2023
Outstanding, shares (in shares) 2,321,976  
Outstanding, weighted average exercise price (in dollars per share) $ 10.74  
Outstanding, weighted average remaining contractual term (Year) 8 years 1 month 6 days 8 years 4 months 24 days
Outstanding, aggregate intrinsic value $ 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) (123,976)  
Forfeited, weighted average exercise price (in dollars per share) $ 10.51  
Expired, shares (in shares) 0  
Expired, weighted average exercise price (in dollars per share) $ 0  
Outstanding, shares (in shares) 2,198,000 2,321,976
Outstanding, weighted average exercise price (in dollars per share) $ 10.75 $ 10.74
Vested and Exercisable, shares (in shares) 824,250  
Vested and Exercisable, weighted average exercise price (in dollars per share) $ 10.75  
Vested and Exercisable, aggregate intrinsic value $ 0