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Equity-Accounted Joint Ventures Equity-Accounted Joint Ventures (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 USD ($) vessel | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) vessel | Jun. 30, 2020 USD ($) | Dec. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 1,300,000 |  | $ 1,300,000 |  |
Due from Joint Ventures, Current | $ 8,160 |  | $ 8,160 |  | $ 10,991
Angola LNG Joint Venture |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number Of Vessels | vessel | 3 |  | 3 |  |
Bahrain LNG Joint Venture [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Advances to equity-accounted joint ventures, current and long-term (note 7) | $ 73,400 |  | $ 73,400 |  |
Ownership percentage | 30.00% |  | 30.00% |  |
Debt Instrument, Interest Rate During Period |  |  | 6.00% |  |
Interest receivable on advances to equity accounted joint ventures | $ 7,500 |  | $ 7,500 |  | 5,100
Interest Income, Related Party | $ 1,200 | $ 1,100 | $ 2,400 | $ 2,200 |
Exmar LPG Joint Venture [Member] |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership percentage | 50.00% |  | 50.00% |  |
Interest receivable on advances to equity accounted joint ventures | $ 0 |  | $ 0 |  |
Interest Income, Related Party | 100 | $ 300 | 200 | $ 600 |
Due from Joint Ventures | $ 32,300 |  | $ 32,300 |  | 42,300
Exmar LPG Joint Venture [Member] | LIBOR |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Variable interest rate on debt |  |  | 0.50% |  |
Angola LNG Joint Venture |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Ownership percentage | 33.00% |  | 33.00% |  |
Due from Joint Ventures, Current | $ 700 |  | $ 700 |  | $ 1,000
Angola LNG Joint Venture | LIBOR |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Variable interest rate on debt |  |  | 1.00% |  |

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