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Related Party Transactions (Details)
3 Months Ended 9 Months Ended
Oct. 06, 2020
shares
Sep. 30, 2021
USD ($)
financial_Institution
shares
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
financial_Institution
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Related Party Transaction [Line Items]            
Number of financial institutions, debt issued | financial_Institution   5   5    
Number of financial institutions, considered related party | financial_Institution       3    
Minimum percentage of common stock held by related party, right to nominate one director   10.00%   10.00%    
Interest expense, related party   $ 1,900,000 $ 1,700,000 $ 5,500,000 $ 29,500,000  
Due to related parties   76,700,000   76,700,000   $ 71,200,000
Warrants | Highbridge            
Related Party Transaction [Line Items]            
Units issued (in shares) | shares 833,333          
Warrants | Mudrick            
Related Party Transaction [Line Items]            
Units issued (in shares) | shares 3,222,222          
Directors            
Related Party Transaction [Line Items]            
Due to affiliate   200,000   200,000    
Related party transaction, amount   $ 30,000.00        
Directors | Restricted stock units            
Related Party Transaction [Line Items]            
Vested (in shares) | shares   5,047        
Ausenco Engineering USA South | Acid POX milling technical study            
Related Party Transaction [Line Items]            
Related party transaction, amount       200,000    
Subordinated Notes            
Related Party Transaction [Line Items]            
Stated amount of borrowing   $ 80,000,000   $ 80,000,000