Quarterly report pursuant to Section 13 or 15(d)

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

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Income per Common Share - Calculation of Basic and Diluted Net Income (Loss) Per Common Share (Detail) (USD $)
3 Months Ended 9 Months Ended
Aug. 31, 2014
Aug. 31, 2013
Aug. 31, 2014
Aug. 31, 2013
Numerator:        
Net Income $ 236,572 $ 194,434 $ 849,457 $ 194,782
Denominator:        
Weighted-average shares outstanding - basic 10,025,939 10,774,892 10,319,514 10,900,750
Dilutive common shares issuable upon exercise of stock options 226,326 89,007 165,335 109,529
Weighted-average shares - diluted 10,252,265 10,863,899 10,484,849 11,010,279
Net income per common share:        
Basic $ 0.02 $ 0.02 $ 0.08 $ 0.02
Diluted $ 0.02 $ 0.02 $ 0.08 $ 0.02