Shareholders' Equity (Deficit) - Schedule of Stock Options Activity (Detail) (Stock Options [Member], USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2011
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock, Beginning Balance	849,000
Stock, Exercised	(93,000)	0
Stock, Cancelled	(125,000)
Stock, Ending Balance	631,000
Stock, Exercisable at November 30, 2013	532,000
Stock, Expected to vest at November 30, 2013	99,000
Weighted Average Exercise Price, Beginning Balance	$ 5.87
Weighted Average Exercise Price, Exercised	$ 7.39
Weighted Average Exercise Price, Cancelled	$ 6.30
Weighted Average Exercise Price, Ending Balance	$ 5.57
Weighted Average Exercise Price, Exercisable at November 30, 2013	$ 5.48
Weighted Average Exercise Price, Expected to vest at November 30, 2013	$ 6.01
Weighted Average Remaining Contractual Life, Outstanding at November 30, 2013	4 years 2 months 12 days
Weighted Average Remaining Contractual Life, Exercisable at November 30, 2013	4 years 1 month 6 days
Weighted Average Remaining Contractual Life, Expected to vest at November 30, 2013	4 years 3 months 18 days
Aggregate Intrinsic Value, Outstanding at November 30, 2013	$ 8.1
Aggregate Intrinsic Value, Exercisable at November 30, 2013	6.8
Aggregate Intrinsic Value, Expected to vest at November 30, 2013	$ 1.2