Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.21.2
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