Supplemental Oil and Natural Gas Information (unaudited) - Summary of Costs Incurred in Oil and Natural Gas Properties (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Acquisition costs:
Unproved properties	$ 106,758	$ 107,862	$ 57,498
Proved properties	201,884	4,072
Development cost	339,628	239,467	257,119
Exploration cost	11,142	20,957	18,791
Asset retirement obligations	29,346
Total acquisition, development and exploration costs	$ 688,758	$ 372,358	$ 333,408

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Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves.

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Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have unproved reserves.

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Amount of asset retirement obligations (ARO) costs incurred (whether capitalized or charged to expense) during the period.

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Development costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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Exploration costs incurred, including capitalized costs and costs charged to expense, in oil and gas activities.

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Amount of costs incurred related to oil and gas property acquisition, exploration and development activities, including capitalized costs and costs charged to expense.

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