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, 2017
May 31, 2016
May 31, 2017
May 31, 2016
Denominator:        
Weighted-average shares outstanding-basic 7,144,775 9,087,807 7,024,280 9,029,909
Dilutive common shares issuable upon exercise of stock options 581,785 309,423 558,255 306,629
Weighted-average shares-diluted 7,726,560 9,397,230 7,582,535 9,336,538
Net income per common share:        
Basic $ 0.07 $ 0.07 $ 0.14 $ 0.06
Diluted $ 0.06 $ 0.07 $ 0.13 $ 0.06
Net Income $ 496,940 $ 637,132 $ 983,863 $ 514,196