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Financial instruments - Additional Information (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Nov. 30, 2023
Nov. 30, 2022
Disclosure of detailed information about financial instruments [line items]    
Trade receivables $ 12,798 $ 10,659
Current trade receivables aging period 60 days 60 days
Bad debt expenses $ 0 $ 0
Bonds and money market funds 6,290 9,214
Cash and money market funds 20,231 23,505
Top of range [member]    
Disclosure of detailed information about financial instruments [line items]    
Minimum cash cash equivalents and short term investments to be maintained 20,000  
Bottom of range [member]    
Disclosure of detailed information about financial instruments [line items]    
Minimum cash cash equivalents and short term investments to be maintained $ 15,000  
Interest rate, measurement | SOFR    
Disclosure of detailed information about financial instruments [line items]    
Positive impact of market interest rates 0.50%  
Increase (decrease) in cash flows $ 300  
Increase (decrease) in profit or loss $ 300  
Interest rate, measurement | Bonds    
Disclosure of detailed information about financial instruments [line items]    
Positive impact of market interest rates 0.50%  
Increase (decrease) in accumulated other comprehensive $ 42 79
Increase (decrease) in fair value of assets $ 42 79
Negative impact of market interest rates 0.50%  
Interest rate, measurement | Cash and market funds    
Disclosure of detailed information about financial instruments [line items]    
Positive impact of market interest rates 0.50%  
Increase (decrease) in cash flows $ 101 118
Increase (decrease) in profit or loss $ 101 $ 118
Negative impact of market interest rates 0.50%  
CA$    
Disclosure of detailed information about financial instruments [line items]    
Positive percentage impact on foreign currency exposures 5.00%  
Negative percentage impact on foreign currency exposures 5.00%