v3.26.1
Basis of Presentation - Summary of Effect of the Restatement Items on the Company's Consolidated Statement of Shareholders' Equity (Details) - CAD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Sep. 30, 2023
Mar. 31, 2023
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity $ 697,594 $ 747,135 $ 720,693 $ 476,995 $ 478,566 $ 557,996 $ 464,315 $ 467,120 $ 400,566 $ 535,137 $ 728,805 $ 760,022
Common Shares                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity 9,233,577 9,155,946 9,064,336 8,822,530 8,782,405 8,656,493 8,476,669 8,379,131 8,219,322 8,209,271 8,209,370 7,938,571
Additional Paid-in capital                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity                 (10,366,441)      
Deficit                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity (11,138,227) (10,983,503) (10,925,158) (10,920,180) (10,875,319) (10,679,363) (10,581,280) (10,472,317) (10,366,441) (10,217,946) (10,012,282) (9,672,761)
Share-based Reserve | Additional Paid-in capital                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity 502,032 500,580 499,960 499,861 503,409 522,329 517,422 514,318 504,758 500,883 497,538 498,150
Warrants | Additional Paid-in capital                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity $ 2,612,631 2,590,485 2,590,485 2,590,485 2,590,485 2,590,485 2,590,485 2,590,485 2,581,788 2,581,788 2,581,788 $ 2,581,788
As Previously Reported                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   758,173 736,013 488,976 487,213 591,475 509,668 532,923 500,507 544,663 749,464  
As Previously Reported | Common Shares                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   9,169,947 9,078,337 8,836,531 8,796,406 8,670,494 8,490,670 8,393,936 8,244,301 8,219,747 8,219,846  
As Previously Reported | Deficit                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   (11,033,938) (10,971,311) (10,969,672) (10,928,145) (10,707,357) (10,585,461) (10,457,168) (10,330,030) (10,237,693) (10,020,896)  
As Previously Reported | Share-based Reserve | Additional Paid-in capital                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   510,400 509,780 509,681 513,229 532,149 527,242 524,138 514,578 510,703 507,358  
As Previously Reported | Warrants | Additional Paid-in capital                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   2,628,137 2,628,137 2,628,137 2,628,137 2,628,137 2,616,198 2,616,514 2,610,519 2,590,765 2,590,765  
Restatement Adjustment                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   (11,038) (15,320) (11,981) (8,647) (33,479) (45,353) (65,803) (99,941) (9,526) (20,659)  
Restatement Adjustment | Common Shares                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   (14,001) (14,001) (14,001) (14,001) (14,001) (14,001) (14,805) (24,979) (10,476) (10,476)  
Restatement Adjustment | Deficit                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   50,435 46,153 49,492 52,826 27,994 4,181 (15,149) (36,411) 19,747 8,614  
Restatement Adjustment | Share-based Reserve | Additional Paid-in capital                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   (9,820) (9,820) (9,820) (9,820) (9,820) (9,820) (9,820) (9,820) (9,820) (9,820)  
Restatement Adjustment | Warrants | Additional Paid-in capital                        
Error Corrections and Prior Period Adjustments Restatement [Line Items]                        
Total shareholders' equity   $ (37,652) $ (37,652) $ (37,652) $ (37,652) $ (37,652) $ (25,713) $ (26,029) $ (28,731) $ (8,977) $ (8,977)