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Commitments and Contingencies - Hyundai Samho Heavy Industries - Additional Information (Detail) $ in Thousands | 1 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2015 USD ($) Vessel m³ | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Long-term Purchase Commitment [Line Items] |  |  |
Payments made to commitments |  | $ 424,868 | $ 237,647
Hyundai Samho Heavy Industries Co., Ltd. [Member] | Liquefied Natural Gas [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Number of vessels | Vessel | 2 |  |
Volume of vessels | m³ | 174,000 |  |
Fully built-up cost | $ 419,800 |  |
Payments made to commitments |  | 40,200 |
Remaining payments required to be made under newbuilding contracts in 2016 |  | 2,600 |
Remaining payments required to be made under newbuilding contracts in 2017 |  | 82,400 |
Remaining payments required to be made under newbuilding contracts in 2018 |  | 44,900 |
Remaining payments required to be made under newbuilding contracts in 2019 |  | $ 249,700 |
BP [Member] | Hyundai Samho Heavy Industries Co., Ltd. [Member] | Liquefied Natural Gas [Member] |  |  |
Long-term Purchase Commitment [Line Items] |  |  |
Number of vessels | Vessel | 1 |  |
Operating lease arrangement period, lessor | 13 years |  |

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