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Commitments and Contingencies - Commitments to Fund Newbuilding and Other Construction Contract Costs (Details) - USD ($) $ in Thousands | 1 Months Ended |
--- | --- | ---
Jun. 30, 2019 | Sep. 30, 2021
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Total estimated remaining costs |  | $ 31,896
Estimated Costs Remainder of 2020 |  | 5,843
Unrecorded Unconditional Purchase Obligation, to be Paid, Year One |  | 26,053
Equity Method Investments [Member] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Total estimated remaining costs |  | 11,339
Estimated Costs Remainder of 2020 |  | 0
Unrecorded Unconditional Purchase Obligation, to be Paid, Year One |  | 11,339
Consolidated Entities [Member] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Total estimated remaining costs |  | 20,557
Estimated Costs Remainder of 2020 |  | 5,843
Long-term Purchase Commitment, Amount | $ 53,500 |
Unrecorded Unconditional Purchase Obligation, to be Paid, Year One |  | $ 14,714
Bahrain LNG Joint Venture [Member] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Equity Method Investment, Ownership Percentage |  | 30.00%
Bahrain LNG Joint Venture [Member] | Building |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Line of credit facility, maximum borrowing capacity |  | $ 23,500
Line of Credit Facility, Remaining Borrowing Capacity |  | 7,100
Bahrain LNG Joint Venture [Member] | Construction [Member] |  |
Unrecorded Unconditional Purchase Obligation [Line Items] |  |
Total estimated remaining costs |  | $ 11,300

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