v3.26.1
Share-Based Compensation - Narrative (Details)
$ / shares in Units, $ in Millions
 12 Months Ended
Mar. 31, 2026
CAD ($)
shares
$ / shares
Mar. 31, 2025
CAD ($)
shares
$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Maximum percentage of common shares issuable pursuant to compensation arrangements 9.50%  
Cash-Settled DSUs    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Derivative liability $ 1.3 $ 2.0
Cash-Settled PSUs    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Derivative liability $ 2.3 2.4
Stock options    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Service period requirement 3 years  
Vesting percentage 33.00%  
Expiration period 5 years  
Share-based compensation expense $ 2.3 3.2
RSU, PSU and DSU    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Maximum percentage of common shares issuable pursuant to compensation arrangements 5.00%  
RSUs    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Service period requirement 3 years  
Vesting percentage 33.00%  
Expiration period 3 years  
Share-based compensation expense $ 3.7 $ 4.6
Number of common shares, right to receive (in shares) | shares 1  
Weighted average fair value of awards granted in share-based payment arrangement (in CAD per share) | $ / shares $ 5.90 $ 7.59
Awards issued (in shares) | shares 753,398 378,369
DSUs    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Share-based compensation expense $ 0.5 $ 1.0
Weighted average fair value of awards granted in share-based payment arrangement (in CAD per share) | $ / shares $ 6.10 $ 7.32
Instrument redemption period following termination 180 days  
Awards issued (in shares) | shares 142,946 160,928
PSUs    
Disclosure of terms and conditions of share-based payment arrangement [line items]    
Service period requirement 3 years  
Expiration period 3 years  
Share-based compensation expense $ 0.7 $ 4.2
Weighted average fair value of awards granted in share-based payment arrangement (in CAD per share) | $ / shares $ 4.76 $ 9.63
Vesting period 3 years  
Awards issued (in shares) | shares 803,003 664,277