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Note 11 - Stock-based Compensation - Stock Option Activity (Details)
 3 Months Ended
Nov. 30, 2024
$ / shares
shares
Outstanding, shares (in shares) | shares 1,752,667
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 11.48
Options granted, shares (in shares) | shares 245,190
Options granted, weighted average exercise price (in dollars per share) | $ / shares $ 13.26
Options exercised, shares (in shares) | shares 0
Options exercised, weighted average exercise price (in dollars per share) | $ / shares $ 0
Options cancelled/forfeited, shares (in shares) | shares 0
Options cancelled/forfeited, weighted average exercise price (in dollars per share) | $ / shares $ 0
Outstanding, shares (in shares) | shares 1,997,857
Outstanding, weighted average exercise price (in dollars per share) | $ / shares $ 11.69