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 6 Months Ended
May 31, 2021
May 31, 2020
May 31, 2021
May 31, 2020
Numerator:        
Net Income $ 1,170,629 $ 953,338 $ 1,864,219 $ 1,640,304
Denominator:        
Weighted-average shares outstanding-basic 7,956,301 7,545,613 7,765,724 7,543,376
Dilutive common shares issuable upon exercise of stock options 322,976 566,676 300,292 577,078
Weighted-average shares-diluted 8,279,277 8,112,289 8,066,016 8,120,454
Net income per common share:        
Basic $ 0.15 $ 0.13 $ 0.24 $ 0.22
Diluted $ 0.14 $ 0.12 $ 0.23 $ 0.20