XML 43 R47.htm IDEA: XBRL DOCUMENT v3.20.1
Financial instruments - Additional information (Details)
3 Months Ended
Feb. 29, 2020
USD ($)
Feb. 29, 2020
CAD ($)
Feb. 29, 2020
USD ($)
Nov. 30, 2019
USD ($)
Accounts receivable     $ 418,000 $ 264,000
Interest rate loss $ 100,000      
Canadian Limit Due to Currency Risk [Member]        
Cash   $ 540,000    
Accounts receivable   49,000    
Accounts payable   $ 865,000    
Change in foreign exchange rate   10.00% 10.00%  
Foreign exchange (gain) loss $ 21,000      
Change in interest rate 1.00%