v3.25.4
Equity (Narrative) (Details)
$ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Sep. 30, 2025
USD ($)
Dec. 31, 2025
CAD ($)
$ / shares
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
CAD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Mar. 31, 2025
shares
Dec. 31, 2025
$ / shares
Nov. 25, 2025
USD ($)
May 14, 2025
USD ($)
Oct. 03, 2024
USD ($)
Aug. 17, 2023
USD ($)
Share Capital Note Disclosure [Line Items]                          
Proceeds from common shares issued         $ 156,300   $ 121,022            
Number of common shares issued for options exercised | shares       675,100 675,100                
Value of common shares issued for options exercised $ 374 $ 101 $ 738   $ 1,112                
Number of warrants issued for consideration | shares       215,625 215,625 100,000 100,000            
Value of broker warrants issued       $ 1,100   $ 145              
Warrant exercise price | $ / shares       $ 5                  
October 2024 Equity Distribution Agreement [Member]                          
Share Capital Note Disclosure [Line Items]                          
Maximum proceeds under equity distribution agreement                       $ 200,000  
Proceeds from common shares issued         $ 180,800                
Amended October 2024 Equity Distribution Agreement [Member]                          
Share Capital Note Disclosure [Line Items]                          
Maximum proceeds under equity distribution agreement                     $ 119,200    
October 2024 ATM Equity Program [Member]                          
Share Capital Note Disclosure [Line Items]                          
Number of common shares issued | shares       15,266,061 15,266,061 21,367,527 21,367,527            
Proceeds from common shares issued         $ 25,900 $ 122,600 $ 87,500            
Shares issued during period, price per share | (per share)       $ 2.37   $ 5.74     $ 1.7        
Cash commission paid in equity distribution agreement         $ 700   2,300            
Fees incurred related to equity program             $ 400            
Amended October 2024 ATM Equity Program [Member]                          
Share Capital Note Disclosure [Line Items]                          
Number of common shares issued | shares       53,540,585 53,540,585                
Proceeds from common shares issued         $ 119,200                
Shares issued during period, price per share | (per share)       $ 3.05         2.23        
Cash commission paid in equity distribution agreement         3,100                
Fees incurred related to equity program         $ 199                
November 2025 Equity Distribution Agreement [Member]                          
Share Capital Note Disclosure [Line Items]                          
Maximum proceeds under equity distribution agreement                   $ 300,000      
Number of common shares issued | shares       4,925,948 4,925,948                
Proceeds from common shares issued         $ 15,800                
Shares issued during period, price per share | (per share)       $ 4.47         $ 3.21        
Cash commission paid in equity distribution agreement         500                
Fees incurred related to equity program         $ 153                
August 2023 Equity Distribution Agreement [Member]                          
Share Capital Note Disclosure [Line Items]                          
Maximum proceeds under equity distribution agreement                         $ 90,000
Number of common shares issued | shares           12,534,457 12,534,457            
Proceeds from common shares issued             $ 37,400            
Shares issued during period, price per share | $ / shares           $ 4.08              
Cash commission paid in equity distribution agreement             1,100            
Fees incurred related to equity program             $ 2            
Exercise of option one [Member]                          
Share Capital Note Disclosure [Line Items]                          
Number of common shares issued for options exercised | shares       500,000 500,000 100,000 100,000            
Exercise price of options exercised | $ / shares         $ 1.25   $ 1.45            
Exercise of option two [Member]                          
Share Capital Note Disclosure [Line Items]                          
Number of common shares issued for options exercised | shares       100,000 100,000                
Exercise price of options exercised | $ / shares         $ 1.1                
Exercise of option three [Member]                          
Share Capital Note Disclosure [Line Items]                          
Number of common shares issued for options exercised | shares       55,100 55,100                
Exercise price of options exercised | $ / shares       $ 5.66                  
Exercise of option four [Member]                          
Share Capital Note Disclosure [Line Items]                          
Number of common shares issued for options exercised | shares       20,000 20,000                
Exercise price of options exercised | $ / shares       $ 6.86                  
Restricted share units [Member]                          
Share Capital Note Disclosure [Line Items]                          
Number of common shares issued for options exercised | shares       1,846,882 1,846,882 118,600 118,600 326,644          
Megawatt Mining Corp [Member] | Property [Member]                          
Share Capital Note Disclosure [Line Items]                          
Shares issued | shares       1,000,000 1,000,000