Commitments and Contingencies - Additional Information (Detail) $ in Thousands	1 Months Ended	2 Months Ended	6 Months Ended
	Apr. 30, 2020 bbl	Jun. 30, 2020 USD ($) bbl	Jun. 30, 2020 USD ($) bbl
Commitments and Contingencies Disclosure [Line Items]
Demobilization of Rigs			$ 1,600
Standby Basis Charges			$ 400
Number of barrels | bbl			8,000
Estimated Litigation Liability		$ 300	$ 300
Asset Retirement Obligation		5,200	5,200
Estimated Litigation Liability, Current		$ 100	$ 100
Term of Drilling Rig Agreement			1 year
Gonzales, Lavaca and Fayette Counties, Texas
Commitments and Contingencies Disclosure [Line Items]
Number of barrels | bbl			20,000
Crude Oil Storage Capacity | Nuevo G&T
Commitments and Contingencies Disclosure [Line Items]
Number of barrels | bbl		70,000	150,000
Remaining obligation under agreement		$ 100	$ 100
Crude Oil Gathering And Transportation Services
Commitments and Contingencies Disclosure [Line Items]
Contractual Obligation, Remainder of 2020		6,500	6,500
Contractual Obligation, Due 2021 through 2025		13,000	13,000
Contractual Obligation, Due 2026		7,400	7,400
Contractual Obligation, Due 2027 through 2030		3,800	3,800
Contractual Obligation, Due 2031		2,200	2,200
Crude Oil Storage Capacity with Downstream Interstate Pipeline | Nuevo G&T
Commitments and Contingencies Disclosure [Line Items]
Number of barrels | bbl	90,000
Remaining obligation under agreement		$ 300	$ 300