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Asset Under Development (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2019
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |
Opening asset under development balance | $ 434,248 |
Closing asset under development balance | 693,004 | $ 434,248
Gimi Conversion |  |
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |
Opening asset under development balance | 434,248 | 20,000
Additions |  | 372,849
Transfer from vessels and equipment, net |  | 0
Transfer from other non-current assets |  | 31,048
Interest costs capitalized |  | 10,351
Closing asset under development balance | 693,004 | $ 434,248
Gimi And Golar Viking Conversion |  |
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |
Additions | 148,544 |
Interest costs capitalized | 16,827 |
Golar Viking Conversion |  |
Capitalized Costs Relating to Oil and Gas Producing Activities, by Geographic Area [Line Items] |  |
Transfer from vessels and equipment, net | 77,172 |
Transfer from other non-current assets | $ 16,213 |

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