Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
(Loss) Income per Common Share - Calculation of Basic and Diluted Net (Loss) Income per Common Share (Detail) - USD ($)
3 Months Ended 9 Months Ended
Aug. 31, 2016
Aug. 31, 2015
Aug. 31, 2016
Aug. 31, 2015
Denominator:        
Weighted-average shares outstanding-basic 7,583,771 9,462,102 8,546,110 9,697,679
Dilutive common shares issuable upon exercise of stock options   288,095   247,939
Weighted-average shares-diluted 7,583,771 9,750,197 8,546,110 9,945,618
Net (loss) income per common share:        
Basic $ (0.35) $ 0.83 $ (0.25) $ 0.86
Diluted $ (0.35) $ 0.80 $ (0.25) $ 0.84
Net (loss) income $ (2,644,361) $ 7,829,572 $ (2,130,165) $ 8,325,774