Quarterly report pursuant to Section 13 or 15(d)

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

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Income per Common Share - Calculation of Basic and Diluted Earnings (Loss) Per Share (Detail) (USD $)
3 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Numerator:    
Net income $ 397,112 $ 244,006
Denominator:    
Weighted-average shares outstanding-basic 10,690,188 10,982,389
Dilutive common shares issuable upon exercise of stock options 73,970 122,705
Weighted-average shares-diluted 10,764,158 11,105,094
Earnings per share:    
Basic $ 0.04 $ 0.02
Diluted $ 0.04 $ 0.02