Supplemental Oil and Natural Gas Disclosures - Costs Incurred in Oil and Natural Gas Property Acquisitions, Exploration, and Development Activities (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Acquisition Costs of Properties:
Proved	$ 2,288	$ 13,438	$ 96,596
Unproved	41,643	136,079	383,535
Exploration Costs	3	13,544	618
Development Costs	34,617	165,198	81,056
Total	$ 78,551	$ 328,259	$ 561,805

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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.

+ 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.

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-Publisher FASB
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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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