Shareholders' Equity (Deficit) - Summary of Restricted Stock Units (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Performance-Based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock, Beginning Balance	630
Restricted Stock, Granted	293
Restricted Stock, Vested	(63)
Restricted Stock, Canceled	(37)
Restricted Stock, Ending Balance	823	630
Restricted Stock, Expected to vest at November 30, 2013	773
Weighted Average Grant Date Fair Value, Beginning Balance	$ 6.33
Weighted Average Grant Date Fair Value, Granted	$ 17.44	$ 6.87	$ 6.01
Weighted Average Grant Date Fair Value, Vested	$ 5.12
Weighted Average Grant Date Fair Value, Cancelled	$ 9.32
Weighted Average Grant Date Fair Value, Ending Balance	$ 10.42	$ 6.33
Weighted Average Grant Date Fair Value, Expected to vest at November 30, 2013	$ 9.95
Restricted Stock, Service-Based [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock, Beginning Balance	638
Restricted Stock, Granted	294
Restricted Stock, Vested	(374)
Restricted Stock, Canceled	(14)
Restricted Stock, Ending Balance	544	638
Restricted Stock, Expected to vest at November 30, 2013	523
Weighted Average Grant Date Fair Value, Beginning Balance	$ 6.41
Weighted Average Grant Date Fair Value, Granted	$ 15.47	$ 7.05	$ 5.91
Weighted Average Grant Date Fair Value, Vested	$ 6.99
Weighted Average Grant Date Fair Value, Cancelled	$ 6.09
Weighted Average Grant Date Fair Value, Ending Balance	$ 10.91	$ 6.41
Weighted Average Grant Date Fair Value, Expected to vest at November 30, 2013	$ 10.91