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Tax credits and grants receivable - Summary of information about unused and unrecorded non refundable federal tax credit (Detail) - USD ($)
$ in Thousands
Nov. 30, 2023
Nov. 30, 2022
Statement [line items]    
Deferred tax assets $ 29 $ 0
Unused tax credits    
Statement [line items]    
Deferred tax assets 13,815  
Income tax expire 2024 | Unused tax credits    
Statement [line items]    
Deferred tax assets 438  
Income tax expire 2025 | Unused tax credits    
Statement [line items]    
Deferred tax assets 1,306  
Income tax expire 2026 | Unused tax credits    
Statement [line items]    
Deferred tax assets 1,604  
Income tax expire 2027 | Unused tax credits    
Statement [line items]    
Deferred tax assets 2,209  
Income tax expire 2028 | Unused tax credits    
Statement [line items]    
Deferred tax assets 2,451  
Income tax expire 2029 | Unused tax credits    
Statement [line items]    
Deferred tax assets 1,652  
Income tax expire 2030 | Unused tax credits    
Statement [line items]    
Deferred tax assets 818  
Income tax expire 2031 | Unused tax credits    
Statement [line items]    
Deferred tax assets 572  
Income tax expire 2032 | Unused tax credits    
Statement [line items]    
Deferred tax assets 299  
Income tax expire 2033 | Unused tax credits    
Statement [line items]    
Deferred tax assets 198  
Income tax expire 2039 | Unused tax credits    
Statement [line items]    
Deferred tax assets 185  
Income tax expire 2040 | Unused tax credits    
Statement [line items]    
Deferred tax assets 315  
Income tax expire 2041 | Unused tax credits    
Statement [line items]    
Deferred tax assets 383  
Income tax expire 2042 | Unused tax credits    
Statement [line items]    
Deferred tax assets 657  
Income tax expire 2043 | Unused tax credits    
Statement [line items]    
Deferred tax assets $ 728