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Commitments - Schedule of Firm Transportation Contracts (Details) - Transportation commitment
$ in Thousands
Dec. 31, 2016
USD ($)
Other Commitments [Line Items]  
2017 $ 176,800
2018 237,101
2019 237,100
2020 237,100
2021 237,101
Thereafter 2,694,979
Total $ 3,820,181