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Stockholders' Equity - Additional Information (Detail) (USD $)
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12 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 12 Months Ended | ||||||||||||||||||||||
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Nov. 30, 2013
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Nov. 30, 2012
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Nov. 30, 2013
Executives [Member]
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Nov. 30, 2013
Service-Based Vesting Condition Options [Member]
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Nov. 30, 2012
Service-Based Vesting Condition Options [Member]
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Nov. 30, 2013
Performance Shares [Member]
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Nov. 30, 2013
Market-Based Vesting Condition Options [Member]
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Nov. 30, 2012
Market-Based Vesting Condition Options [Member]
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Nov. 30, 2013
Performance and Market-Based Vesting Condition Options [Member]
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Nov. 30, 2012
Performance and Market-Based Vesting Condition Options [Member]
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Nov. 30, 2013
2000 Plan [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2012
2000 Plan [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
2000 Plan [Member]
Service-Based Vesting Condition Options [Member]
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Nov. 30, 2013
2000 Plan [Member]
Minimum [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
2000 Plan [Member]
Maximum [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
2006 Plan [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2012
2006 Plan [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
2006 Plan [Member]
Service-Based Vesting Condition Options [Member]
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May 31, 2012
2012 Plan [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
2012 Plan [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
2012 Plan [Member]
Service-Based Vesting Condition Options [Member]
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Nov. 30, 2013
2012 Plan [Member]
Performance Based Options [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
2012 Plan [Member]
Market Based Options [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
Stock Option [Member]
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Nov. 30, 2012
Stock Option [Member]
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Nov. 30, 2013
Stock Option [Member]
Service-Based Vesting Condition Options [Member]
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Nov. 30, 2012
Stock Option [Member]
Service-Based Vesting Condition Options [Member]
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Nov. 30, 2012
Stock Option [Member]
Performance Shares [Member]
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Nov. 30, 2012
Stock Option [Member]
Performance and Market-Based Vesting Condition Options [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||||||||||||
| Number of share issued to option holder | 400,000 | 10,000 | |||||||||||||||||||||||||||
| Options exercised | $ 14,950 | ||||||||||||||||||||||||||||
| Share receive for option exercises | 10,000 | 33,562 | |||||||||||||||||||||||||||
| Number of option surrendered | 96,838 | 26,749 | |||||||||||||||||||||||||||
| Issuance of common stock to cover the total cost of exercising the stock option | 6,813 | ||||||||||||||||||||||||||||
| Common stock for issuance pursuant to stock options or restricted stock | 2,250,000 | 1,000,000 | 1,500,000 | ||||||||||||||||||||||||||
| Term of options | 5 years | 7 years | |||||||||||||||||||||||||||
| Vesting period ranging from, date of grant | 3 years | ||||||||||||||||||||||||||||
| Options exercisable period after termination | 90 days | ||||||||||||||||||||||||||||
| Granted, Shares | 1,752,260 | 1,823,098 | 1,112,260 | 1,183,098 | 640,000 | 640,000 | 12,500 | 60,589 | 400,000 | 200,000 | |||||||||||||||||||
| Shares issued under 2000 stock incentive plan | 0 | 157,427 | 1,500,000 | ||||||||||||||||||||||||||
| Option issued | 739,760 | 762,509 | |||||||||||||||||||||||||||
| Increase in common stock reserved for issuance | 2,500,000 | ||||||||||||||||||||||||||||
| Weighted average grant date fair value of options | $ 1.58 | $ 1.57 | $ 1.28 | ||||||||||||||||||||||||||
| Unrecognized compensation cost related to non-vested share-based compensation arrangements granted | 616,000 | 81,940 | 92,000 | 92,000 | 92,000 | ||||||||||||||||||||||||
| Weighted-average period | 10 months 17 days | ||||||||||||||||||||||||||||
| Total fair value of shares vested | 245,000 | ||||||||||||||||||||||||||||
| Recognized compensation cost | 272,000 | 1,325,000 | 171,000 | ||||||||||||||||||||||||||
| Granted, Shares | 36,000 | 0 | 0 | ||||||||||||||||||||||||||
| Granted, Shares | 213,334 | 426,666 | |||||||||||||||||||||||||||
| Share based compensation recognized on achievement of performance targets | 0 | ||||||||||||||||||||||||||||
| Compensation expenses recognized without performance target achievement | $ 0 | ||||||||||||||||||||||||||||