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INTANGIBLE ASSETS - Finite-Lived and Indefinite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Intangible assets with indefinite lives:    
Emissions allowances $ 302 $ 316
Intangible assets with definite lives:    
Patent and intellectual property license 8,963 8,963
Less: Accumulated amortization (1,295) (398)
Patent and intellectual property license, net 7,668 8,565
Intangible assets, net $ 7,970 $ 8,881