v3.25.2
Income Taxes - Movements in Deferred Tax Assets (Liabilities) (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets $ 15,343  
Deferred tax liabilities (16,190)  
Net deferred tax assets (liabilities) (847) $ (1,245)
Deferred tax assets 4,219 15,343
Deferred tax liabilities (1,897) (16,190)
Net deferred tax assets (liabilities) 2,322 (847)
Total deferred tax assets    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets 29,989 40,001
Recovered through (charged to) earnings 4,222 (8,699)
Recovered through (charged to) other comprehensive income 361 (35)
Recovered through (charged to) equity   (1,278)
Deferred tax assets 34,572 29,989
Non-capital losses    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets 23,740 31,903
Recovered through (charged to) earnings 4,293 (6,842)
Recovered through (charged to) other comprehensive income 243 (43)
Recovered through (charged to) equity   (1,278)
Deferred tax assets 28,276 23,740
Capital losses    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets 56 142
Recovered through (charged to) earnings 271 (86)
Recovered through (charged to) other comprehensive income 0 0
Recovered through (charged to) equity   0
Deferred tax assets 327 56
Finance costs    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets 64 118
Recovered through (charged to) earnings 500 (54)
Recovered through (charged to) other comprehensive income 0 0
Recovered through (charged to) equity   0
Deferred tax assets 564 64
Investment tax credit    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets 0 1,282
Recovered through (charged to) earnings   (1,282)
Recovered through (charged to) other comprehensive income   0
Recovered through (charged to) equity   0
Deferred tax assets   0
Derivatives    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets 0 26
Recovered through (charged to) earnings   (26)
Recovered through (charged to) other comprehensive income   0
Recovered through (charged to) equity   0
Deferred tax assets   0
Leases    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets 6,238 6,529
Recovered through (charged to) earnings (989) (287)
Recovered through (charged to) other comprehensive income 96 (4)
Recovered through (charged to) equity   0
Deferred tax assets 5,345 6,238
Others    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax assets (109) 1
Recovered through (charged to) earnings 147 (122)
Recovered through (charged to) other comprehensive income 22 12
Recovered through (charged to) equity   0
Deferred tax assets 60 (109)
Total deferred tax liabilities    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax liabilities (30,836) (41,246)
Recovered through (charged to) earnings (1,033) 10,362
Recovered through (charged to) other comprehensive income (381) 48
Recovered through (charged to) equity   0
Deferred tax liabilities (32,250) (30,836)
Convertible debenture    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax liabilities 0 (3,402)
Recovered through (charged to) earnings   3,402
Recovered through (charged to) other comprehensive income   0
Recovered through (charged to) equity   0
Deferred tax liabilities   0
Investment in associates    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax liabilities 0 (12)
Recovered through (charged to) earnings   12
Recovered through (charged to) other comprehensive income   0
Recovered through (charged to) equity   0
Deferred tax liabilities   0
Intangible assets    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax liabilities (7,742) (12,624)
Recovered through (charged to) earnings (497) 4,826
Recovered through (charged to) other comprehensive income (402) 56
Recovered through (charged to) equity   0
Deferred tax liabilities (8,641) (7,742)
Property, plant and equipment    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax liabilities (12,380) (16,265)
Recovered through (charged to) earnings (6,206) 3,893
Recovered through (charged to) other comprehensive income 52 (8)
Recovered through (charged to) equity   0
Deferred tax liabilities (18,534) (12,380)
Inventory    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax liabilities (5,709) (5,218)
Recovered through (charged to) earnings 603 (491)
Recovered through (charged to) other comprehensive income (32) 0
Recovered through (charged to) equity   0
Deferred tax liabilities (5,138) (5,709)
Biological assets    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax liabilities (4,863) (2,070)
Recovered through (charged to) earnings 5,640 (2,793)
Recovered through (charged to) other comprehensive income 0 0
Recovered through (charged to) equity   0
Deferred tax liabilities 777 (4,863)
Others    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Deferred tax liabilities (142) (1,655)
Recovered through (charged to) earnings (573) 1,513
Recovered through (charged to) other comprehensive income 1 0
Recovered through (charged to) equity   0
Deferred tax liabilities (714) (142)
Net deferred tax assets (liabilities)    
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Recovered through (charged to) earnings 3,189 1,663
Recovered through (charged to) other comprehensive income $ (20) 13
Recovered through (charged to) equity   $ (1,278)