v3.26.1
Note 10 - Stock-based Compensation - Summary of RSU Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Apr. 30, 2026
Jan. 31, 2026
Forfeited, shares (in shares) (13,195)  
Forfeited, weighted average grant date fair value (in dollars per share) $ 42.5  
Forfeited, shares (in shares) (13,195)  
Restricted Stock Units (RSUs) [Member]    
Unvested balance, shares (in shares) 1,239,793  
Unvested balance, weighted average grant date fair value (in dollars per share) $ 19.07  
Unvested balance, aggregate intrinsic value $ 14,130 $ 11,220
Granted, shares (in shares) 667,419  
Granted, weighted average grant date fair value (in dollars per share) $ 4.54  
Vested, shares (in shares) (57,414)  
Vested, weighted average grant date fair value (in dollars per share) $ 18.04  
Forfeited, shares (in shares) (19,438)  
Forfeited, weighted average grant date fair value (in dollars per share) $ 23.59  
Unvested balance, shares (in shares) [1] 1,830,360  
Unvested balance, weighted average grant date fair value (in dollars per share) $ 13.76  
Forfeited, shares (in shares) (19,438)  
Market-based Restricted Stock Units (MBRSUs) [Member]    
Unvested balance, shares (in shares) 19,862  
Unvested balance, weighted average grant date fair value (in dollars per share) $ 32.57  
Unvested balance, aggregate intrinsic value $ 51 180
Granted, shares (in shares) 0  
Granted, weighted average grant date fair value (in dollars per share) $ 0  
Vested, shares (in shares) 0  
Vested, weighted average grant date fair value (in dollars per share) $ 0  
Unvested balance, shares (in shares) 6,667  
Unvested balance, weighted average grant date fair value (in dollars per share) $ 12.94  
Performance-based Restricted Stock Units [Member]    
Unvested balance, shares (in shares) 305,764  
Unvested balance, weighted average grant date fair value (in dollars per share) $ 19.8  
Unvested balance, aggregate intrinsic value $ 4,997 $ 2,767
Granted, shares (in shares) [2] 341,500  
Granted, weighted average grant date fair value (in dollars per share) $ 4.6  
Vested, shares (in shares) 0  
Vested, weighted average grant date fair value (in dollars per share) $ 0  
Forfeited, shares (in shares) 0  
Forfeited, weighted average grant date fair value (in dollars per share) $ 0  
Unvested balance, shares (in shares) 647,264  
Unvested balance, weighted average grant date fair value (in dollars per share) $ 11.73  
Forfeited, shares (in shares) 0  
[1] Includes 80,724 vested RSUs, where the shares due on settlement have been irrevocably deferred at the election of the recipients.
[2] Reflects the number of shares that would vest based on achieving the “Target” level of performance.