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Stock Options - Additional Information (Detail) (USD $) | 9 Months Ended | 12 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended |  | 3 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  | 1 Months Ended |  |  |  |  | 9 Months Ended
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Aug. 31, 2013 Executives and Consultants [Member] | Nov. 30, 2012 Executives and Consultants [Member] | Aug. 31, 2013 Service-Based Vesting Condition Options [Member] | Nov. 30, 2012 Service-Based Vesting Condition Options [Member] | Aug. 31, 2013 Performance Shares [Member] | Aug. 31, 2012 Performance Shares [Member] | Aug. 31, 2013 Performance Shares [Member] | Nov. 30, 2012 Performance Shares [Member] | Aug. 31, 2013 Market-Based Vesting Condition Options [Member] | Aug. 31, 2012 Market-Based Vesting Condition Options [Member] | Aug. 31, 2013 Market-Based Vesting Condition Options [Member] | Aug. 31, 2012 Market-Based Vesting Condition Options [Member] | Aug. 31, 2013 Performance and Market-Based Vesting Condition Options [Member] | Nov. 30, 2012 Performance and Market-Based Vesting Condition Options [Member] | Aug. 31, 2013 Stock Option [Member] Service-Based Vesting Condition Options [Member] | Aug. 31, 2012 Stock Option [Member] Service-Based Vesting Condition Options [Member] | Aug. 31, 2012 Stock Option [Member] Performance Shares [Member] | Aug. 31, 2012 Stock Option [Member] Performance and Market-Based Vesting Condition Options [Member] | Aug. 31, 2012 Stock Option [Member] Performance and Market-Based Vesting Condition Options [Member] | Aug. 31, 2013 2000 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2012 2000 Plan [Member] Employee Stock Incentive Plan [Member] | Aug. 31, 2013 2000 Plan [Member] Service-Based Vesting Condition Options [Member] | Aug. 31, 2013 2006 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2012 2006 Plan [Member] Employee Stock Incentive Plan [Member] | Aug. 31, 2013 2006 Plan [Member] Service-Based Vesting Condition Options [Member] | May 31, 2012 2012 Plan [Member] Employee Stock Incentive Plan [Member] | Aug. 31, 2013 2012 Plan [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2012 2012 Plan [Member] Employee Stock Incentive Plan [Member] | Aug. 31, 2013 2012 Plan [Member] Service-Based Vesting Condition Options [Member] | Aug. 31, 2013 2012 Plan [Member] Performance Options [Member] Employee Stock Incentive Plan [Member] | Nov. 30, 2012 2012 Plan [Member] Performance Options [Member] Employee Stock Incentive Plan [Member] | Aug. 31, 2013 Minimum [Member] 2000 Plan [Member] Employee Stock Incentive Plan [Member] Y | Aug. 31, 2013 Maximum [Member] 2000 Plan [Member] Employee Stock Incentive Plan [Member] Y
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock for issuance pursuant to stock options or restricted stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,250,000 |  |  | 1,000,000 |  |  |  | 1,500,000 |  |  |  |  |  |
Term of options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 | 7
Vesting period ranging from, date of grant |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |
Options exercisable period after termination |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 90 days |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  | 1,128,926 | 1,183,098 |  |  |  |  |  |  |  |  | 640,000 | 640,000 |  |  |  |  |  | 12,500 | 60,589 |  |  |  |  |  |  |  |  | 1,000,000 | 1,000,000 |  |
Shares issued under 2000 stock incentive plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  |  | 147,428 |  |  |  | 1,500,000 | 1,500,000 |  |  |  |  |
Share issued |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 756,426 | 762,509 |  |  |  |  |  |  |  |  |
Increase in common stock reserved for issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,500,000 |  |  |  |  |  |  |
Weighted average grant date fair value of options |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.58 | $ 1.55 |  | $ 0.00 | $ 1.28 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of share issued to option holder |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options exercised |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 14,950 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share receive for option exercises |  |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |  | 33,562 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of option surrendered |  |  | 80,172 |  |  |  |  |  |  |  |  |  |  |  | 26,749 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock to cover the total cost of exercising the stock option |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,813 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted |  |  |  |  | 616,000 |  | 616,000 | 616,000 | 91,800 |  | 91,800 |  |  |  |  |  |  |  |  |  |  | 142,000 |  |  | 142,000 |  |  |  | 142,000 |  |  |  |
Weighted-average period |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 1 month 6 days |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total fair value of shares vested |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 223,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  | 36,000 |  | 0 | 0 | 0 |  | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  |  |  |  | 213,334 |  |  |  |  | 426,666 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation recognized on achievement of performance targets | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Compensation expenses recognized without performance target achievement |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of share options (or share units) exercised during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.28,29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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