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Stockholders' Equity - Additional Information (Detail) (USD $) | 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 | Nov. 30, 2012 | Nov. 30, 2013 Executives [Member] | Nov. 30, 2013 Service-Based Vesting Condition Options [Member] | Nov. 30, 2012 Service-Based Vesting Condition Options [Member] | Nov. 30, 2013 Performance Shares [Member] | Nov. 30, 2013 Market-Based Vesting Condition Options [Member] | Nov. 30, 2012 Market-Based Vesting Condition Options [Member] | Nov. 30, 2013 Performance and Market-Based Vesting Condition Options [Member] | Nov. 30, 2012 Performance and Market-Based Vesting Condition Options [Member] | Nov. 30, 2013 2000 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2012 2000 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2013 2000 Plan [Member] Service-Based Vesting Condition Options [Member] | Nov. 30, 2013 2000 Plan [Member] Minimum [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2013 2000 Plan [Member] Maximum [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2013 2006 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2012 2006 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2013 2006 Plan [Member] Service-Based Vesting Condition Options [Member] | May 31, 2012 2012 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2013 2012 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2013 2012 Plan [Member] Service-Based Vesting Condition Options [Member] | Nov. 30, 2013 2012 Plan [Member] Performance Based Options [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2013 2012 Plan [Member] Market Based Options [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2013 Stock Option [Member] | Nov. 30, 2012 Stock Option [Member] | Nov. 30, 2013 Stock Option [Member] Service-Based Vesting Condition Options [Member] | Nov. 30, 2012 Stock Option [Member] Service-Based Vesting Condition Options [Member] | Nov. 30, 2012 Stock Option [Member] Performance Shares [Member] | Nov. 30, 2012 Stock Option [Member] Performance and Market-Based Vesting Condition Options [Member]
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 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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