Stockholder's Equity - Additional Information (Detail) (USD $)
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3 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 12 Months Ended | 6 Months Ended | 1 Months Ended | 6 Months Ended | 0 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | 3 Months Ended | 12 Months Ended | 6 Months Ended | ||||||||||||||||||||||||||||
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May 31, 2014
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May 31, 2013
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May 31, 2014
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May 31, 2013
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May 31, 2014
Performance Shares [Member]
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May 31, 2014
Performance and 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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May 31, 2014
Restricted Common Shares [Member]
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May 31, 2014
Employee Stock Incentive Plan [Member]
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May 31, 2013
Employee Stock Incentive Plan [Member]
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May 31, 2014
Employee Stock Incentive Plan [Member]
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May 31, 2013
Employee Stock Incentive Plan [Member]
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Feb. 28, 2014
Market-Based Vesting Condition Options [Member]
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Nov. 30, 2013
Market-Based Vesting Condition Options [Member]
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May 31, 2014
Market-Based Vesting Condition Options [Member]
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May 31, 2014
Service-Based Vesting Condition Options [Member]
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Nov. 30, 2013
Service-Based Vesting Condition Options [Member]
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May 31, 2014
David Portnoy [Member]
Restricted Common Shares [Member]
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May 31, 2014
Mark Portnoy [Member]
Restricted Common Shares [Member]
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May 31, 2012
2012 Plan [Member]
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May 31, 2014
2012 Plan [Member]
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May 31, 2014
2012 Plan [Member]
Service Based Option [Member]
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Nov. 30, 2013
2012 Plan [Member]
Service Based Option [Member]
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May 31, 2014
2012 Plan [Member]
Service Based Restricted Shares [Member]
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May 31, 2014
2012 Plan [Member]
Performance Based Options [Member]
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Nov. 30, 2013
2012 Plan [Member]
Performance Based Options [Member]
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May 31, 2014
2012 Plan [Member]
Market Based Options [Member]
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Nov. 30, 2013
2012 Plan [Member]
Market Based Options [Member]
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May 31, 2014
2012 Plan [Member]
Restricted Common Shares [Member]
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May 31, 2014
2012 Plan [Member]
Scenario, Forecast [Member]
Restricted Common Shares [Member]
December One Two Thousand Fourteen [Member]
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May 31, 2014
2012 Plan [Member]
Scenario, Forecast [Member]
Restricted Common Shares [Member]
December One Two Thousand Fifteen [Member]
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Nov. 30, 2013
2012 Plan [Member]
David Portnoy [Member]
Restricted Common Shares [Member]
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Nov. 30, 2013
2012 Plan [Member]
Mark Portnoy [Member]
Restricted Common Shares [Member]
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May 31, 2014
2000 Plan [Member]
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May 31, 2014
2000 Plan [Member]
Employee Stock Incentive Plan [Member]
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Nov. 30, 2013
2000 Plan [Member]
Employee Stock Incentive Plan [Member]
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May 31, 2014
2000 Plan [Member]
Employee Stock Incentive Plan [Member]
Minimum [Member]
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May 31, 2014
2000 Plan [Member]
Employee Stock Incentive Plan [Member]
Maximum [Member]
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May 31, 2014
2006 Plan [Member]
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May 31, 2014
2006 Plan [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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May 31, 2014
Stock Option [Member]
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May 31, 2013
Stock Option [Member]
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Feb. 28, 2014
Stock Option [Member]
Performance Shares [Member]
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Nov. 30, 2013
Stock Option [Member]
Performance Shares [Member]
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May 31, 2013
Stock Option [Member]
Service-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 | 32,496 | 7,500 | 32,496 | 7,500 | 32,496 | 7,500 | ||||||||||||||||||||||||||||||||||||||||
Stock options exercised, value | $ 48,665 | $ 11,825 | $ 48,665 | $ 11,825 | ||||||||||||||||||||||||||||||||||||||||||
Common stock for issuance pursuant to stock options or restricted stock | 1,500,000 | 2,250,000 | 1,000,000 | |||||||||||||||||||||||||||||||||||||||||||
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 | 40,000 | 640,000 | 1,016,016 | 1,112,260 | 400,000 | 400,000 | 129,729 | 261,488 | 400,000 | 87,162 | 200,000 | 2,500 | 12,500 | 653,516 | 739,760 | |||||||||||||||||||||||||||||||
Shares issued under stock incentive plans | 1,621,621 | 0 | 220,342 | |||||||||||||||||||||||||||||||||||||||||||
Increase in common stock reserved for issuance | 2,500,000 | |||||||||||||||||||||||||||||||||||||||||||||
Granted, Shares | 0 | 0 | ||||||||||||||||||||||||||||||||||||||||||||
Weighted average grant date fair value of options | $ 1.67 | |||||||||||||||||||||||||||||||||||||||||||||
Options exercised | 48,665 | 11,825 | ||||||||||||||||||||||||||||||||||||||||||||
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted | 44,000 | 15,000 | 6,200 | 25,000 | 120,000 | 25,000 | 25,000 | |||||||||||||||||||||||||||||||||||||||
Weighted-average period | 5 months 19 days | |||||||||||||||||||||||||||||||||||||||||||||
Total fair value of shares vested | 73,000 | |||||||||||||||||||||||||||||||||||||||||||||
Performance-based or market based vesting condition options | 0 | 0 | 0 | 0 | ||||||||||||||||||||||||||||||||||||||||||
Granted, Shares | 213,334 | 426,666 | ||||||||||||||||||||||||||||||||||||||||||||
Options forfeited | 200,000 | 400,000 | ||||||||||||||||||||||||||||||||||||||||||||
Options remaining | 26,666 | |||||||||||||||||||||||||||||||||||||||||||||
Share based compensation recognized on achievement of performance targets | 0 | |||||||||||||||||||||||||||||||||||||||||||||
Compensation expenses recognized without performance target achievement | 0 | |||||||||||||||||||||||||||||||||||||||||||||
Shares granted during period | 70,270 | 59,459 | ||||||||||||||||||||||||||||||||||||||||||||
Share based compensation, percentage of vesting upon grant | 33.33% | 33.33% | 33.33% | |||||||||||||||||||||||||||||||||||||||||||
Share based compensation vested period fair value | $ 80,000 | |||||||||||||||||||||||||||||||||||||||||||||
Maximum restricted common shares granted | 162,163 | 186,487 | ||||||||||||||||||||||||||||||||||||||||||||
Description of minimum requirement to be satisfied by employee for restricted common share | The Employment Agreements state if David Portnoy and Mark Portnoy are employed by the Company on November 30, 2014, then no later than February 15, 2015, the Company will grant up to 186,487 and 162,163 shares of restricted common shares, respectively, based on certain performance thresholds, as defined in the agreements. | |||||||||||||||||||||||||||||||||||||||||||||
Additional restricted common shares to be granted | 162,163 | 186,487 | ||||||||||||||||||||||||||||||||||||||||||||
Description of minimum requirement to be satisfied by employee for additional restricted common share | In addition, if David Portnoy and Mark Portnoy are employed by the Company on November 30, 2015, then no later than February 15, 2016, the Company will grant up to an additional 186,487 and 162,163 shares of restricted common shares, respectively, based on similar performance thresholds, as defined in the agreements. |