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Stockholders' Equity - Additional Information (Detail) - USD ($) |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Feb. 27, 2020 | Sep. 04, 2019 | Dec. 20, 2019 | Aug. 30, 2019 | Aug. 31, 2012 | Aug. 31, 2021 | Aug. 31, 2020 | Aug. 31, 2021 | Aug. 31, 2020 | Nov. 30, 2020 | Nov. 30, 2018 | Dec. 01, 2011
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  | 20,000 |  |  |  |
Weighted average grant date fair value of options granted |  |  |  |  |  |  |  | $ 4.56 | $ 4.94 |  |  |
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. |  |  |  |
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 |  |  |  |  |  | $ 28,000 |  | $ 28,000 |  |  |  |
Share based compensation options fair value |  |  |  |  |  | 29,000 |  | 85,000 |  |  |  |
David Portnoy [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  | 23,636 |  |  |  |  |  |  |  |  |
Mark Portnoy [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  | 20,000 |  |  |  |  |  |  |  |  |
Oleg Mikulinksy [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  |  |  |  | 8,000 |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted |  |  |  |  |  | $ 800 |  | $ 800 |  |  |  |
Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of share issued to option holder |  |  |  |  |  | 84,632 | 0 | 574,300 | 20,000 |  |  |
Options exercised |  |  |  |  |  | $ 0 | $ 0 | $ 1,066,000 | $ 41,000 |  |  |
Service-Based Vesting Condition Options [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  | 20,000 |  |  |  |
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted |  |  |  |  |  | $ 175,000 |  | $ 175,000 |  |  |  |
Service-Based Vesting Condition Options [Member] | Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  | 0 | 7,000 | 20,000 | 51,969 |  |  |
Weighted-average period |  |  |  |  |  |  |  | 3 years 1 month 24 days |  |  |  |
Total fair value of shares vested |  |  |  |  |  |  |  | $ 224,000 |  |  |  |
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 |  |  |  |  |  | $ 0 |  | $ 0 |  |  |  |
Share based compensation options fair value |  |  |  |  |  |  |  | $ 0 | $ 121,000 |  |  |
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] | 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] | Non Qualified Stock Options [Member] | David Portnoy [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] | Non Qualified Stock Options [Member] | Mark Portnoy [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares granted during period |  |  |  | 22,222 |  |  |  |  |  |  |  |
Market Based Vesting Condition Options |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares granted during period |  |  |  |  |  |  |  | 0 | 0 |  |  |
Market Based Vesting Condition Options | Share-based Payment Arrangement, Tranche Two |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares forfeited during period | 1,333 | 4,444 |  |  |  |  |  |  |  |  |  |
Market Based Vesting Condition Options | Selling, General and Administrative Expenses [Member] | Share-based Payment Arrangement, Tranche Two | September 4, 2019 Granted Options [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation options fair value |  |  |  |  |  |  |  | $ 200 | $ 10,000 |  |  |
Market Based Vesting Condition Options | Selling, General and Administrative Expenses [Member] | Share-based Payment Arrangement, Tranche Two | February 27, 2020 Granted Options [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Share based compensation options fair value |  |  |  |  |  |  |  | $ 2,500 | $ 2,000 |  |  |
Market Based Vesting Condition Options | Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  | 0 | 0 |  |  |
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 |  |  |  |
Option issued |  |  |  |  |  | 105,000 |  | 105,000 |  | 305,000 |  |
Shares issued under stock incentive plan |  |  |  |  |  | 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 |  |  |  |  |  | 542,310 |  | 542,310 |  |  |  |
2012 Plan [Member] | Service Based Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted, Shares |  |  |  |  |  |  |  | 463,143 |  | 868,443 |  |
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 |  | 530,851 |  |
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] | 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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