Supplemental Oil and Gas Disclosures - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019 $ / bbl $ / Mcfe	Dec. 31, 2018 $ / bbl $ / Mcfe	Dec. 31, 2017 $ / bbl $ / Mcfe
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items]
Weighted average natural gas price | $ / Mcfe	0.97	1.21	1.67
Average NGL price	13.23	26.76	21.16
Weighted Average Oil Per Barrel Price	53.62	61.57	46.39
Discount Rate	10.00%