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, 2018
May 31, 2017
May 31, 2018
May 31, 2017
Denominator:        
Weighted-average shares outstanding-basic 7,247,464 7,144,775 7,177,082 7,024,280
Dilutive common shares issuable upon exercise of stock options 670,271 581,785   558,255
Weighted-average shares-diluted 7,917,735 7,726,560 7,177,082 7,582,535
Net income per common share:        
Basic $ 0.07 $ 0.07 $ (0.28) $ 0.14
Diluted $ 0.07 $ 0.06 $ (0.28) $ 0.13
Net Income $ 539,506 $ 496,940 $ (1,990,566) $ 983,863