Subsequent Events - Additional Information (Details) - Pirate Assets - Wilson County [Member] $ in Millions	1 Months Ended
Feb. 28, 2019 USD ($) bbl	Dec. 31, 2018 USD ($)
Subsequent Event [Line Items]
Net book value		$ 45.7
Subsequent Event
Subsequent Event [Line Items]
Purchase consideration of oil and gas properties	$ 12.3
Average daily production \| bbl	219

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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