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Note 6 - Stock-based Compensation - Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended
Aug. 31, 2025
Options outstanding, balance (in shares) 718,950
Options outstanding, weighted average exercise price (in dollars per share) $ 12.15
Granted, options (in shares) 148,700
Granted, weighted average exercise price (in dollars per share) $ 14
Stock options exercised (in shares) (70,110)
Exercised, weighted average exercise price (in dollars per share) $ 9.48
Terminated or expired, options (in shares) (24,475)
Terminated or expired, weighted average exercise price (in dollars per share) $ 12.88
Options outstanding, balance (in shares) 773,065
Options outstanding, weighted average exercise price (in dollars per share) $ 12.73
Options outstanding, weighted average remaining contractual term (Year) 6 years 11 months 8 days
Options outstanding, aggregate intrinsic value $ 4,648
Vested and exercisable, outstanding (in shares) 450,748
Vested and exercisable, weighted average exercise price (in dollars per share) $ 12.26
Vested and exercisable, weighted average remaining contractual term (Year) 5 years 6 months 25 days
Vested and exercisable, aggregate intrinsic value $ 2,919