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Stockholders' Equity - Stock Option Activity (Detail) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 31, 2019 | Aug. 31, 2018 | Aug. 31, 2019 | Aug. 31, 2018 | Nov. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted |  |  | 112,465 |  |
Service-Based Vesting Condition Options [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Outstanding at November 30, 2018 |  |  | 1,001,365 |  |
Granted | 110,965 | 0 | 112,465 | 51,636 |
Exercised |  |  | (2,500) |  |
Expired/forfeited |  |  | (7,500) |  |
Outstanding at August 31, 2019 | 1,103,830 |  | 1,103,830 |  | 1,001,365
Exercisable at August 31, 2019 | 1,004,312 |  | 1,004,312 |  |
Outstanding at November 30, 2018, Weighted Average Exercise Price |  |  | $ 2.77 |  |
Granted, Weighted Average Exercise Price |  |  | 7.52 |  |
Exercised, Weighted Average Exercise Price |  |  | 2.28 |  |
Expired/forfeited, Weighted Average Exercise Price |  |  | 2.22 |  |
Outstanding at August 31, 2019, Weighted Average Exercise Price | $ 3.26 |  | 3.26 |  | $ 2.77
Exercisable at August 31, 2019, Weighted Average Exercise Price | $ 2.83 |  | $ 2.83 |  |
Outstanding, Weighted Average Remaining Contractual Term (Years) |  |  | 4 years 2 months 8 days |  | 3 years 11 months 19 days
Exercisable at August 31, 2019, Weighted Average Remaining Contractual Term (Years) |  |  | 3 years 8 months 19 days |  |
Outstanding at November 30, 2018 |  |  | $ 4,580,967 |  |
Granted |  |  | 735 |  |
Exercised |  |  | 14,175 |  |
Expired/forfeited |  |  | 39,800 |  |
Outstanding at August 31, 2019 | $ 4,728,540 |  | 4,728,540 |  | $ 4,580,967
Exercisable at August 31, 2019 | $ 4,727,576 |  | $ 4,727,576 |  |

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- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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