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Accounting Policies Accounting Policies - Price risk derivatives (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Price Risk Derivatives [Line Items]    
Realized gain on oil derivative instrument $ 11,979  
Realized gain on oil derivative instrument   $ 14,318
Unrealized gain on oil derivative instrument (43,420)  
Unrealized gain on oil derivative instrument   185,770
Gain on FLNG derivative instrument $ (31,441) $ 200,088