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RELATED PARTY TRANSACTIONS - Transactions with Hygo and Affiliates - Payables (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Related Party Transaction [Line Items]    
Amount due from (to) related party $ 3,484 $ 2,048
Hygo Energy Transition Ltd | Trading balances with affiliates    
Related Party Transaction [Line Items]    
Amount due from (to) related party $ 0 $ (11,222)