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Going Concern (Details)
$ / shares in Units, $ / shares in Units, $ in Thousands, $ in Millions, $ in Millions
 1 Months Ended 3 Months Ended 9 Months Ended
Sep. 03, 2025
USD ($)
$ / shares
shares
May 07, 2025
USD ($)
$ / shares
shares
May 07, 2025
MXN ($)
Feb. 11, 2025
USD ($)
Feb. 11, 2025
CAD ($)
$ / shares
Jan. 21, 2025
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
shares
Feb. 28, 2025
USD ($)
Jan. 31, 2025
$ / shares
shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2024
USD ($)
shares
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2024
USD ($)
shares
Jun. 26, 2025
$ / shares
shares
Going Concern                              
Net loss                     $ 4,655 $ 12,677 $ 24,460 $ 45,359  
Net cash used in operating activities                         2,460 1,953  
Proceeds from income tax refund   $ 76,000                          
Issuance of equity to settle the loan (shares) | shares 14,204,846           14,204,846 14,204,846              
Issuance of equity to settle the loan $ 6,400           $ 6,400 $ 6,400     $ 6,392   6,392    
Proceeds from issuance of stock                         8,640 2,434  
Proceeds from investments                         854 $ 1,178  
Income tax refund, inflation adjustments   $ 4,000 $ 79.6                        
Securities called by warrants | shares                             1,500,000
Exercise price (in dollars per share) | $ / shares   $ 0.65                         $ 0.65
Agreement for net proceeds                         $ 27,200    
Investment in Green Light Metals                              
Going Concern                              
Price per share (in dollars per share) | $ / shares         $ 0.1                    
Proceeds from investments       $ 900 $ 1.2       $ 900            
Maximum                              
Going Concern                              
Securities called by warrants | shares   1,500,000                         1,500,000
Registered Direct Offering                              
Going Concern                              
Issuance of common stock, net of issuance costs (in shares) | shares           15,625,000       15,625,000          
Price per share (in dollars per share) | $ / shares $ 0.45         $ 0.16 $ 0.45     $ 0.16 $ 0.45   $ 0.45    
Proceeds from issuance of stock $ 11,400         $ 2,500 $ 11,400                
ATM Agreement                              
Going Concern                              
Issuance of common stock, net of issuance costs (in shares) | shares             25,315,954       0 1,230,180 25,139,655 4,708,993  
Proceeds from issuance of stock                       $ 600 $ 8,600 $ 2,400