Commitments and Contingencies - Additional Information (Details) $ in Millions	9 Months Ended
Sep. 30, 2019 USD ($) bbl
Commitments and Contingencies Disclosure [Line Items]
Long-term Purchase Commitment, Minimum Volume Required \| bbl	8,000
Drilling Rigs	2
Commitment length	1
Termination Notice, Days	60
Estimated Litigation Liability, Current	$ 0.3
Asset Retirement Obligation	4.8
Crude Oil Gathering And Transportation Services
Commitments and Contingencies Disclosure [Line Items]
Contractual Obligation, Due in 2019	3.2
Contractual Obligation, Due 2020 through 2025	13.0
Contractual Obligation, Due 2026	7.4
Contractual Obligation, Due 2027 through 2030	3.8
Contractual Obligation, Due 2031	$ 2.2

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Commitments and Contingencies Disclosure [Line Items]

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Contractual Obligation, Due 2020 through 2025

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Contractual Obligation, Due 2026

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Contractual Obligation, Due 2027 through 2030

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Contractual Obligation, Due 2031

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Drilling Rigs

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Termination Notice, Days

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The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

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Amount of contractual obligation maturing in the remainder of the fiscal year following the latest fiscal year ended.

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Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

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Volume that must be purchased within the specified time period of the agreement to avoid penalties or unfavorable effects on pricing, among other adverse consequences.

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