Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.20.2
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