v3.26.1
Goodwill - Disclosure of Reconciliation of Changes in Goodwill (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Disclosure of reconciliation of changes in goodwill [line items]    
Beginning balance $ 181,407 $ 166,493
Goodwill Allocation 0  
Business acquisition (note 4) 16,784 14,662
Impairment loss (36,223) (5,144)
Foreign currency translation adjustment (2,591) 5,396
Net carrying amount 159,377 181,407
Canada    
Disclosure of reconciliation of changes in goodwill [line items]    
Beginning balance 78,405 78,405
Goodwill Allocation 0  
Business acquisition (note 4) 0 0
Impairment loss (26,500) 0
Foreign currency translation adjustment 0 0
Net carrying amount 51,905 78,405
France    
Disclosure of reconciliation of changes in goodwill [line items]    
Beginning balance 143 135
Goodwill Allocation 0  
Business acquisition (note 4) 0 0
Impairment loss 0 0
Foreign currency translation adjustment 3 8
Net carrying amount 146 143
EPM-US    
Disclosure of reconciliation of changes in goodwill [line items]    
Beginning balance 10,196 9,603
Goodwill Allocation 0  
Business acquisition (note 4) 16,784 0
Impairment loss 0 0
Foreign currency translation adjustment (89) 593
Net carrying amount 26,891 10,196
ERP-US    
Disclosure of reconciliation of changes in goodwill [line items]    
Beginning balance 67,893 63,941
Goodwill Allocation 0  
Business acquisition (note 4) 0 0
Impairment loss 0 0
Foreign currency translation adjustment (2,120) 3,952
Net carrying amount 65,773 67,893
ERP-CAN    
Disclosure of reconciliation of changes in goodwill [line items]    
Beginning balance 10,108 14,409
Goodwill Allocation 0  
Business acquisition (note 4) 0 0
Impairment loss (9,723) (5,144)
Foreign currency translation adjustment (385) 843
Net carrying amount 0 10,108
Not allocated    
Disclosure of reconciliation of changes in goodwill [line items]    
Beginning balance 14,662 0
Goodwill Allocation (14,662)  
Business acquisition (note 4) 0 14,662
Impairment loss 0 0
Foreign currency translation adjustment 0 0
Net carrying amount 0 14,662
ERP-CAN    
Disclosure of reconciliation of changes in goodwill [line items]    
Beginning balance 0 0
Goodwill Allocation 14,662  
Business acquisition (note 4) 0 0
Impairment loss 0 0
Foreign currency translation adjustment 0 0
Net carrying amount $ 14,662 $ 0