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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Aug. 31, 2023
Nov. 30, 2022
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 50,000,000 50,000,000
Common stock, shares issued (in shares) 24,143,014 24,018,612
Common stock, shares outstanding (in shares) 21,977,027 21,852,625
Treasury stock, shares (in shares) 2,165,987 2,165,987