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 9 Months Ended
Aug. 31, 2022
Aug. 31, 2021
Aug. 31, 2022
Aug. 31, 2021
Numerator:        
Net Income $ 466,820 $ 856,494 $ 1,933,586 $ 2,720,713
Denominator:        
Weighted-average shares outstanding-basic 8,390,335 8,452,374 8,449,277 7,996,278
Dilutive common shares issuable upon exercise of stock options 14,150 239,957 26,384 221,176
Weighted-average shares-diluted 8,404,485 8,692,331 8,475,661 8,217,454
Basic $ 0.06 $ 0.10 $ 0.23 $ 0.34
Diluted $ 0.06 $ 0.10 $ 0.23 $ 0.33