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Stock-Based Compensation Plans (Stock Option Activity) (Details) - Stock Options [Member] - USD ($)
12 Months Ended
Aug. 31, 2021
Aug. 31, 2020
Number of Stock Options, Outstanding at August 31, 2020 218,750  
Number of Stock Options, Granted  
Number of Stock Options, Exercised (218,750) (350,000)
Number of Stock Options, Forfeited  
Number of Stock Options, Outstanding at August 31, 2021 218,750
Number of Stock Options, Options vested and exercisable at August 31, 2021  
Weighted Average Exercise Price Per Share, Outstanding at August 31, 2020 $ 11.57  
Weighted Average Exercise Price Per Share, Granted  
Weighted Average Exercise Price Per Share, Exercised (11.57)  
Weighted Average Exercise Price Per Share, Forfeited  
Weighted Average Exercise Price Per Share, Outstanding at August 31, 2021 $ 11.57
Weighted Average Exercise Price Per Share, Options vested and exercisable at August 31, 2021  
Aggregate Intrinsic Value, Options vested and exercisable at August 31, 2021