Quarterly report pursuant to Section 13 or 15(d)

Stock Options - Summary of Non-Vested Options (Detail)

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Stock Options - Summary of Non-Vested Options (Detail) (USD $)
9 Months Ended
Aug. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Non-vested at November 30, 2012, Shares 251,403
Granted, Shares 36,000
Vested, Shares (131,794)
Forfeited, Shares (20,830)
Non-vested at August 31, 2013, Shares 134,779
Non-vested at November 30, 2012, Weighted Average Grant-Date Fair Value $ 1.77
Granted, Weighted Average Grant-Date Fair Value $ 1.58
Vested, Weighted Average Grant-Date Fair Value $ 1.69
Forfeited, Weighted Average Grant-Date Fair Value $ 1.84
Non-vested at August 31, 2013, Weighted Average Grant-Date Fair Value $ 1.78