Shareholders' Equity (Deficit) - Summary of Range of Exercise Prices and Weighted-Average Exercise Prices for Options Outstanding (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Nov. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding	631
2004 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Average	$ 10.92
Stock Options Outstanding	20
Weighted Average Exercise Price	$ 10.92
Weighted Average Remaining Contractual Life (years)	2 months 12 days
2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Average	$ 4.54
Stock Options Outstanding	133
Weighted Average Exercise Price	$ 4.54
Weighted Average Remaining Contractual Life (years)	5 years 7 months 6 days
2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Minimum	$ 4.91
Range of Exercise Prices, Maximum	$ 7.14
Stock Options Outstanding	371
Weighted Average Exercise Price	$ 5.51
Weighted Average Remaining Contractual Life (years)	3 years 8 months 12 days
2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Average	$ 6.01
Stock Options Outstanding	100
Weighted Average Exercise Price	$ 6.01
Weighted Average Remaining Contractual Life (years)	4 years 3 months 18 days
2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Average	$ 6.00
Stock Options Outstanding	7
Weighted Average Exercise Price	$ 6.00
Weighted Average Remaining Contractual Life (years)	8 years 2 months 12 days