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Related Party Transactions - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) $ / Mcf	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Accounts receivable from affiliates	$ 2,202		$ 2,202		$ 35,469
Partnerships owned by majority stockholder
Related Party Transaction [Line Items]
Related party revenue, fee (in USD per Mcf) | $ / Mcf			0.02
Accounts receivable from affiliates	2,200		$ 2,200
Partnerships owned by majority stockholder | Partnership costs to drill and operating wells and overhead fees
Related Party Transaction [Line Items]
Revenue from related parties	$ 2,400	$ 12,100	$ 78,400	$ 13,700

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