Commitments and Contingencies - Additional Information (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) bbl
Commitments and Contingencies Disclosure [Line Items]
Number of barrels | bbl	8,000
Asset Retirement Obligation	$ 5,600
Estimated Litigation Liability, Current	100
Frac Services Prepayment	$ 12,000
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	180,000
Crude Oil Gathering And Transportation Services
Commitments and Contingencies Disclosure [Line Items]
Contractual Obligation, Remainder of the Current Year	$ 10,500
Contractual Obligation, Due 2022 through 2025	13,900
Contractual Obligation, Due 2026	7,800
Contractual Obligation, Due 2027 through 2030	3,800
Contractual Obligation, Due 2031	$ 600
Crude Oil Storage Capacity with Downstream Interstate Pipeline | Nuevo G&T
Commitments and Contingencies Disclosure [Line Items]
Number of barrels | bbl	90,000
Crude Oil Storage Capacity with Downstream Interstate Pipeline | Nuevo Dos Gathering and Transportation, LLC-Marketing Affiliate
Commitments and Contingencies Disclosure [Line Items]
Number of barrels | bbl	62,000
Tank Capacity | Nuevo G&T
Commitments and Contingencies Disclosure [Line Items]
Number of barrels | bbl	70,000
Additional Crude Oil Storage Capacity With Downstream Interstate Pipeline | Nuevo Dos Gathering and Transportation, LLC-Marketing Affiliate
Commitments and Contingencies Disclosure [Line Items]
Number of barrels | bbl	120,000