Quarterly report pursuant to Section 13 or 15(d)

Income per Common Share - Calculation of Basic and Diluted Net Income per Common Share (Detail)

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Income per Common Share - Calculation of Basic and Diluted Net Income per Common Share (Detail) - USD ($)
3 Months Ended
Feb. 28, 2022
Feb. 28, 2021
Numerator:    
Net Income $ 832,047 $ 693,590
Denominator:    
Weighted-average shares outstanding-basic 8,527,031 7,570,913
Dilutive common shares issuable upon exercise of stock options 221,152 627,678
Weighted-average shares-diluted 8,748,183 8,198,591
Income per share:    
Basic $ 0.10 $ 0.09
Diluted $ 0.10 $ 0.08