Commodity Price Risk Activities - Additional Information (Details)	1 Months Ended	9 Months Ended
	Oct. 31, 2018 $ / bbl bbl	Sep. 30, 2018 DeliveryObligation $ / bbl bbl
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Number of open physical obligations | DeliveryObligation		0
Oil Argus LLS Basis Swaps January-December 2019
Derivative [Line Items]
Total volume | bbl		5,430
Weighted Average Price - Swap | $ / bbl		5
Subsequent Event | Oil Argus LLS Basis Swaps January-December 2019
Derivative [Line Items]
Total volume | bbl	182,500
Weighted Average Price - Swap | $ / bbl	5.55