Commitments and Contingencies - Gross Future Minimum Transportation Demand and Firm Processing Charges (Detail) $ in Thousands	Sep. 30, 2020 USD ($)
Commitments and Contingencies Disclosure [Abstract]
2020	$ 6,399
2021	19,777
2022	13,064
2023	14,600
2024	14,640
Thereafter	4,799
Total	$ 73,279

Transportation Demand and Firm Processing Charges, Gross Future Minimum Payments

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Transportation Demand and Firm Processing Charges, Gross Future Minimum Payments, in Five Years

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Transportation Demand and Firm Processing Charges, Gross Future Minimum Payments, in Four Years

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Transportation Demand And Firm Processing Charges Gross Future Minimum Payments In One Year

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Transportation Demand and Firm Processing Charges, Gross Future Minimum Payments, in Three Years

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Transportation Demand and Firm Processing Charges, Gross Future Minimum Payments, in Two Years

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Transportation Demand and Firm Processing Charges, Gross Future Minimum Payments, Thereafter

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