Subsequent Events - Additional Information (Details) - UPL Three Rivers Holdings, LLC - Utah $ in Millions		3 Months Ended
	Jul. 27, 2018 USD ($)	Jun. 30, 2018 bbl
Subsequent Event [Line Items]
Production of oil equivalent per day | bbl		2,000
Third Party | Subsequent Event
Subsequent Event [Line Items]
Purchase and sales agreement date	Jul. 27, 2018
Sale of assets, cash consideration | $	$ 75.0