Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Detail)

v3.10.0.1
Stockholders' Equity - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
May 21, 2018
Mar. 08, 2018
Apr. 15, 2016
Nov. 30, 2017
Nov. 30, 2016
May 31, 2012
May 31, 2018
May 31, 2017
Feb. 28, 2017
May 31, 2018
May 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Granted, Shares             51,636 0   51,636 0
Shares granted during period                   51,636  
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
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.  
David Portnoy [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Shares granted during period     186,487 121,801 183,145         91,801  
Mark Portnoy [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Shares granted during period     162,163 105,915 159,257         75,915  
Payment of stock appreciation right                   $ 444,000  
Payment of stock appreciation right, shares                   30,000  
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    
Share based compensation options fair value       $ 80,000              
Shares granted during period       14,729         19,620    
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       457,250     444,000     444,000  
Shares issued under stock incentive plan             319,929     319,929  
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             809,251     809,251  
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          
Service Based Stock Options [Member] | 2012 Plan [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Granted, Shares                   621,365  
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                   823,415  
Market Based Options [Member] | 2012 Plan [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Granted, Shares                   116,240  
Service-Based Vesting Condition Options [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Granted, Shares                   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 service related share-based compensation arrangements granted             $ 123,000     $ 123,000  
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 service related share-based compensation arrangements granted             123,000     123,000  
Employee Stock Incentive Plan [Member] | Share-based Compensation Award, Tranche One [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Unrecognized compensation cost related to non-vested service related share-based compensation arrangements granted             91,000     91,000  
Employee Stock Incentive Plan [Member] | Share-based Compensation Award, Tranche Two [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Unrecognized compensation cost related to non-vested service related share-based compensation arrangements granted             19,000     $ 19,000  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche One [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share based compensation, vesting percentage                   33.30%  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche One [Member] | December 1, 2016 [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share based compensation, vesting percentage                   33.30%  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche One [Member] | November 30, 2017 [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share based compensation, vesting percentage                   33.30%  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche One [Member] | David Portnoy [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Shares granted during period   23,636                  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche One [Member] | Mark Portnoy [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Shares granted during period   20,000                  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche Two [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share based compensation, vesting percentage                   33.30%  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche Two [Member] | December One Two Thousand Eighteen [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share based compensation, vesting percentage                   33.30%  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche Two [Member] | November Thirty Two Thousand Nineteen [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Share based compensation, vesting percentage                   33.30%  
Employee Stock Incentive Plan [Member] | 2012 Plan [Member] | Share-based Compensation Award, Tranche Two [Member] | Oleg Mikulinksy [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Shares granted during period 8,000                    
Employee Stock Incentive Plan [Member] | Selling, General and Administrative Expenses [Member] | 2012 Plan [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                   $ 48,000  
Employee Stock Incentive Plan [Member] | Selling, General and Administrative Expenses [Member] | 2012 Plan [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                   9,000  
Performance Shares [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Granted, Shares               0     0
Market-Based Vesting Condition Options [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Granted, Shares               0     0
Restricted Common Shares [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Unrecognized compensation cost related to non-vested service related share-based compensation arrangements granted             0 $ 362,000   0 $ 362,000
Share based compensation options fair value                   756,000  
Performance and Market-Based Vesting Condition Options [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                   $ 73,550  
Performance and Market-Based Vesting Condition Options [Member] | Share-based Compensation Award, Tranche One [Member] | David Portnoy [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] | Share-based Compensation Award, Tranche One [Member] | Mark Portnoy [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] | Share-based Compensation Award, Tranche Two [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Unrecognized compensation cost related to non-vested service related share-based compensation arrangements granted             6,750     $ 6,750  
Performance and Market-Based Vesting Condition Options [Member] | Share-based Compensation Award, Tranche Two [Member] | Oleg Mikulinksy [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] | Selling, General and Administrative Expenses [Member] | Share-based Compensation Award, Tranche One [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Unrecognized compensation cost related to non-vested service related share-based compensation arrangements granted             $ 73,550     $ 73,550  
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                   $ 6,750  
Stock Option [Member]                      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                      
Number of share issued to option holder             1,000 7,500   2,250 26,781
Options exercised             $ 2,670 $ 17,900   $ 4,920 $ 51,396
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 4 months 13 days  
Total fair value of shares vested                   $ 116,000