Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.19.3
Stockholders' Equity - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
May 21, 2018
Mar. 08, 2018
Aug. 30, 2019
May 31, 2012
Aug. 31, 2019
May 31, 2019
Aug. 31, 2018
Feb. 28, 2017
Aug. 31, 2019
Aug. 31, 2018
Nov. 30, 2019
Nov. 30, 2018
Nov. 30, 2017
Nov. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Granted, Shares                 112,465          
Weighted average grant date fair value                 $ 3.32 $ 3.23        
Description on second amendment to employment agreement                 The Amendment provides for the grant of shares of the Company’s common stock based on certain performance measures being attained by the Company during fiscal year 2016 and fiscal year 2017. The Amendment states if Executive is employed by the Company on November 30, 2016 and November 30, 2017, then no later than February 28, 2017 and February 28, 2018, respectively, the Company will grant Executive up to 20,000 shares of restricted stock based on performance as set forth in the Amendment per each fiscal year.          
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, 2018 and the remaining 1/3 on November 30, 2019          
Shares earned paid in cash                         $ 444,000  
Stock compensation, number of shares opted to lump sum cash payment                 30,000 30,000        
Unrecognized compensation cost related to non-vested options         $ 19,000       $ 19,000          
Amended And Restated Employment Agreement [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Unrecognized compensation costs         0   $ 0   0 $ 0        
Second Amendment Agreement [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Unrecognized compensation costs         0   $ 0   0 0        
Unrecognized compensation cost related to non-vested options         5,000       5,000          
David Portnoy [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Common stock for issuance pursuant to stock options or restricted stock                         186,487  
Granted, Shares   23,636                        
Shares granted during period                         91,801 183,145
Shares earned during period                         121,801  
Mark Portnoy [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Common stock for issuance pursuant to stock options or restricted stock                         162,163  
Granted, Shares   20,000                        
Shares granted during period                         75,915 159,257
Shares earned during period                         105,915  
Oleg Mikulinksy [Member] | Second Amendment Agreement [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Common stock for issuance pursuant to stock options or restricted stock               20,000            
Granted, Shares 8,000                          
Share based compensation options fair value                 14,000 9,000     $ 80,000  
Shares granted during period               19,620         14,729  
Optionee [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Granted, Shares           1,500                
Performance And Market 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         $ 45,000       $ 45,000          
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         370,000       370,000     380,000    
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       1,500,000          
Shares issued under stock incentive plan         0       0          
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                    
Selling, General and Administrative Expenses [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Share based compensation options fair value                 $ 57,000 $ 50,000        
Service Based Stock Options [Member] | 2012 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Granted, Shares                 732,330          
Service Based Restricted Shares [Member] | 2012 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Granted, Shares                 129,729          
Performance Based Options [Member] | 2012 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Granted, Shares                 823,300          
Market Based Options [Member] | 2012 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Granted, Shares                 116,218          
Service-Based Vesting Condition Options [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Granted, Shares         110,965   0   112,465 51,636        
Service-Based Vesting Condition Options [Member] | 2006 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted         $ 295,000       $ 295,000          
Service-Based Vesting Condition Options [Member] | 2012 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted         295,000       $ 295,000          
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] | Oleg Mikulinksy [Member] | Share-based Compensation Award, Tranche Two [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Shares granted during period                 8,000          
Performance And Market Based Vesting Condition Options [Member] | 2018 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Unrecognized compensation cost related to non-vested share-based compensation arrangements granted         5,000       $ 5,000          
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         107,000       107,000          
Share based compensation options fair value                 54,000          
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]                            
Share based compensation options fair value                 14,000          
Market-Based Vesting Condition Options [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                 $ 15,000          
Shares forfeited during period                 4,444          
Market-Based Vesting Condition Options [Member] | Scenario, Forecast [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      
Market-Based Vesting Condition Options [Member] | David Portnoy [Member] | Scenario, Forecast [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] | Scenario, Forecast [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      
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         (1,000)       $ 5,500          
Restricted Common Shares [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   $ 0 $ 0        
Share based compensation options fair value                         $ 756,000  
Stock Option [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Number of share issued to option holder         0   61,500   2,500 63,750        
Options exercised         $ 0   $ 166,005   $ 5,700 $ 170,925        
Stock Option [Member] | Service-Based Vesting Condition Options [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Weighted-average period                 1 year 3 months 29 days          
Total fair value of shares vested                 $ 168,000          
Non Qualified Stock Options [Member] | Performance And Market Based Vesting Condition Options [Member] | David Portnoy [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Shares granted during period     26,243                      
Non Qualified Stock Options [Member] | Performance And Market Based Vesting Condition Options [Member] | Mark Portnoy [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Shares granted during period     22,222