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Stockholders' Equity - Additional Information (Detail) - USD ($) |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 31, 2020 | Feb. 27, 2020 | Dec. 20, 2019 | Aug. 30, 2019 | May 31, 2012 | Aug. 31, 2020 | Aug. 31, 2019 | May 31, 2019 | Aug. 31, 2020 | Aug. 31, 2019 | Nov. 30, 2019 | Nov. 30, 2018 | Dec. 01, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  | 110,965 |  | 51,969 | 112,465 |  |  |
Weighted average grant date fair value of options granted |  |  |  |  |  |  |  |  | $ 4.94 | $ 3.32 |  |  |
Plan modification description and terms |  |  |  |  |  |  |  |  | The options were issued under the Company’s 2012 Stock Plan and will vest 1/3 upon grant, 1/3 on December 1, 2020 and the remaining 1/3 on November 30, 2021. |  |  |  |
Share based compensation options fair value |  |  |  |  |  |  |  |  |  | $ 14,000 |  |  |
Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted | $ 141,000 |  |  |  |  | $ 141,000 |  |  | $ 141,000 |  |  |  |
Share based compensation options fair value |  |  |  |  |  | $ 6,000 |  |  | $ 79,000 |  |  |  |
Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Number of share issued to option holder |  |  |  |  |  | 0 | 0 |  | 20,000 | 2,500 |  |  |
Options exercised |  |  |  |  |  | $ 0 | $ 0 |  | $ 41,000 | $ 5,700 |  |  |
Optionee [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  | 1,500 |  |  |  |  |
David Portnoy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  | 23,636 |  |  |  |  |  |  |  |  |  |
Shares earned during period |  |  |  |  |  | 304,946 |  |  |  |  |  |  |
Stock compensation, number of shares opted to lump sum cash payment |  |  |  |  |  | 30,000 |  |  |  |  |  |  |
Shares earned paid in cash |  |  |  |  |  |  |  |  |  |  |  | $ 444,000 |
Number of shares surrendered |  |  |  |  |  |  |  |  |  |  | 157,472 |  |
Payments of cash in surrender of shares in share based compensation activities |  |  |  |  |  |  |  |  |  |  | $ 534,917 |  |
Mark Portnoy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  | 20,000 |  |  |  |  |  |  |  |  |  |
Shares earned during period |  |  |  |  |  | 265,172 |  |  |  |  |  |  |
Stock compensation, number of shares opted to lump sum cash payment |  |  |  |  |  | 30,000 |  |  |  |  |  |  |
Shares earned paid in cash |  |  |  |  |  |  |  |  |  |  |  | $ 444,000 |
Number of shares surrendered |  |  |  |  |  |  |  |  |  |  | 134,977 |  |
Payments of cash in surrender of shares in share based compensation activities |  |  |  |  |  |  |  |  |  |  | $ 457,327 |  |
Oleg Mikulinksy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted | 8,600 |  |  |  |  | $ 8,600 |  |  | $ 8,600 |  |  |  |
Oleg Mikulinksy [Member] | Second Amendment Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  |  |  |  | 8,000 |
Shares granted during period |  |  |  |  |  | 34,349 |  |  |  |  |  |  |
Service-Based Vesting Condition Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  | 51,969 |  |  |  |
Service-Based Vesting Condition Options [Member] | Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  | 7,000 |  |  | 51,969 |  |  |  |
Weighted-average period |  |  |  |  |  |  |  |  | 1 year 1 month 20 days |  |  |  |
Total fair value of shares vested |  |  |  |  |  |  |  |  | $ 474,000 |  |  |  |
Market-Based Vesting Condition Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted during period |  |  |  |  |  |  |  |  | 0 |  |  |  |
Market-Based Vesting Condition Options [Member] | Share-based Compensation Award, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares forfeited during period |  | 1,333 |  |  |  |  |  |  |  |  | 4,444 |  |
Market-Based Vesting Condition Options [Member] | Selling, General and Administrative Expenses [Member] | Share-based Compensation Award, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation options fair value | 2,000 |  |  |  |  |  |  |  | $ 10,000 |  |  |  |
Market-Based Vesting Condition Options [Member] | Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  | 0 |  |  |  |
Market-Based Vesting Condition Options [Member] | David Portnoy [Member] | Share-based Compensation Award, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares forfeited during period |  |  |  |  |  |  |  |  |  |  | 15,756 |  |
Market-Based Vesting Condition Options [Member] | Mark Portnoy [Member] | Share-based Compensation Award, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares forfeited during period |  |  |  |  |  |  |  |  |  |  | 13,332 |  |
Performance and Market-Based Vesting Condition Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Plan modification description and terms |  |  |  |  |  |  |  |  | These options were issued under the Company’s 2012 Stock Plan and will vest 1/3 upon date of grant, 1/3 on December 1, 2019 and 1/3 on November 30, 2020. |  |  |  |
Performance and Market-Based Vesting Condition Options [Member] | Selling, General and Administrative Expenses [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted | $ 51,000 |  |  |  |  | $ 51,000 |  |  | $ 51,000 |  |  |  |
Share based compensation options fair value |  |  |  |  |  |  |  |  | $ 121,000 |  |  |  |
Performance and Market-Based Vesting Condition Options [Member] | Selling, General and Administrative Expenses [Member] | Share-based Compensation Award, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation options fair value |  |  |  |  |  |  |  |  |  | $ 136,000 |  |  |
Performance and Market-Based Vesting Condition Options [Member] | Selling, General and Administrative Expenses [Member] | Share-based Compensation Award, Tranche Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares forfeited during period |  |  |  |  |  |  |  |  |  |  | 2,666 |  |
Performance and Market-Based Vesting Condition Options [Member] | David Portnoy [Member] | Share-based Compensation Award, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted during period |  |  |  |  |  |  |  |  |  |  |  | 47,273 |
Performance and Market-Based Vesting Condition Options [Member] | David Portnoy [Member] | Non Qualified Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted during period |  |  |  | 26,243 |  |  |  |  |  |  |  |  |
Performance and Market-Based Vesting Condition Options [Member] | Mark Portnoy [Member] | Share-based Compensation Award, Tranche One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted during period |  |  |  |  |  |  |  |  |  |  |  | 40,000 |
Performance and Market-Based Vesting Condition Options [Member] | Mark Portnoy [Member] | Non Qualified Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted during period |  |  |  | 22,222 |  |  |  |  |  |  |  |  |
2006 Plan [Member] | Employee Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock for issuance pursuant to stock options or restricted stock | 1,000,000 |  |  |  |  | 1,000,000 |  |  | 1,000,000 |  |  |  |
Option issued | 305,000 |  |  |  |  | 305,000 |  |  | 305,000 |  | 325,000 |  |
Shares issued under stock incentive plan | 0 |  |  |  |  | 0 |  |  | 0 |  |  |  |
2012 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock for issuance pursuant to stock options or restricted stock |  |  |  |  |  |  |  |  |  |  |  |  | 1,500,000
Shares issued under stock incentive plan | 615,510 |  |  |  |  | 615,510 |  |  | 615,510 |  |  |  |
2012 Plan [Member] | Service Based Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  | 815,243 | 732,330 |  |  |
2012 Plan [Member] | Service Based Restricted Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  | 129,729 | 129,729 |  |  |
2012 Plan [Member] | Performance Based Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  | 530,851 | 823,300 |  |  |
2012 Plan [Member] | Market Based Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  | 116,218 | 116,218 |  |  |
2012 Plan [Member] | Service-Based Vesting Condition Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted | $ 314,000 |  |  |  |  | $ 314,000 |  |  | $ 314,000 |  |  |  |
2012 Plan [Member] | Employee Stock Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Increase in common stock reserved for issuance |  |  |  |  | 2,500,000 |  |  |  |  |  |  |  |

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