Quarterly report pursuant to Section 13 or 15(d)

Summary of significant accounting policies - Additional Information (Details)

v3.20.4
Summary of significant accounting policies - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Nov. 30, 2020
Nov. 30, 2019
Aug. 31, 2020
Jan. 01, 2020
Summary of significant accounting policies        
Cash in excess by FDIC $ 9,622,000      
Settlement claims $ 500,000      
Concentration of credit Risk description No individual client represented more than 10% of revenues for the three months ended November 30, 2020 and 2019, respectively.      
Concentration of credit risk percent 98.00%      
Short-term asset and workers compensation - deposits $ 300,000      
Long-term asset and workers compensation - deposits 700,000      
Short term accrued workers compensation 500,000      
Long term accrued workers compensation 1,300,000      
Short term assets 1,000,000      
Short term liabilities 1,800,000      
Long term assets 2,400,000      
Long term liabilities $ 4,500,000      
Discount rate (as a percent) 15.00%   15.00% 10.00%
Working capital changes $ 41,000      
Annualized gross wages (in percentage) 20.00%   20.00%  
Reduction in gross wages per month (in percentage) 1.50%   1.50%  
Research and developments costs $ 1,400,000 $ 800,000    
Capitalized computer software cost 0 0    
Advertising cost, net $ 202,000 $ 304,000