Crude Oil and Natural Gas Property Information - Schedule of Costs Incurred in Oil and Gas Property Acquisition Exploration and Development Activities (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Oil and Gas Exploration and Production Industries Disclosures [Abstract]
Property Acquisition Costs - Proved	$ 31,579	$ 8,446	$ 5,008
Property Acquisition Costs - Unproved	329,586	220,875	149,962
Total property acquisition costs	361,165	229,321	154,970
Exploration Costs	81,015	123,461	182,355
Development Costs	2,478,327	1,695,954	767,148
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities	$ 2,920,507	$ 2,048,736	$ 1,104,473

Cost incurred, including capitalized costs and costs charged to expense, in acquisition of oil and gas properties.

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- Definition

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

+ References

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-Publisher FASB
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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.

+ References

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- Definition

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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