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Investments (Details) - USD ($)
shares in Thousands, $ in Thousands
9 Months Ended
Sep. 30, 2024
Dec. 31, 2023
Dec. 31, 2021
Investments in and Advances to Affiliates [Line Items]      
Investments $ 22,754 $ 17,354  
Kodiak      
Investments in and Advances to Affiliates [Line Items]      
Investments 13,063 8,538  
CarbonFree      
Investments in and Advances to Affiliates [Line Items]      
Investments $ 6,805 6,850  
Convertible Notes      
Investments in and Advances to Affiliates [Line Items]      
Investments     $ 5,000
Deferred conversion period 2 years    
Ownership percentage 1.00%    
Standard Lithium      
Investments in and Advances to Affiliates [Line Items]      
Investments $ 1,288 1,616  
Common stock, shares held (in shares) 800    
KMX Technologies      
Investments in and Advances to Affiliates [Line Items]      
Investments $ 1,598 350  
Convertible Notes      
Investments in and Advances to Affiliates [Line Items]      
Investments   $ 400  
Preferred Units      
Investments in and Advances to Affiliates [Line Items]      
Investments $ 1,000