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Note 10 - Stock-based Compensation (Tables)
12 Months Ended
Aug. 31, 2023
Notes Tables  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
   

Fiscal Year 2023

   

Fiscal Year 2022

 

Dividend yield

    2.44 %     1.65 %

Expected volatility

    45.2 %     45.4 %

Expected life of option (years)

 

10

   

10

 

Weighted average risk-free interest rate

    3.31 %     0.77 %
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
   

Number of Shares (#)

   

Weighted Average Exercise Price

   

Aggregate

Intrinsic Value

 

Outstanding at August 31, 2021

    1,426,651     $ 9.30          

Options granted

    174,840       16.97          

Options exercised

    (51,218 )     6.60          

Options terminated

    (5,546 )     18.23          
                         

Outstanding at August 31, 2022

    1,544,727     $ 10.23          

Options granted

    277,613       11.41          

Options exercised

    (265,209 )     6.46          

Options terminated

    -       -          
                         

Outstanding at August 31, 2023

    1,557,130     $ 11.08     $ 4,240,525  
                         

Exercisable at August 31, 2023

    1,079,897     $ 10.77     $ 3,329,061