Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.21.2
Commitments and Contingencies - Additional Information (Detail)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
bbl
Sep. 30, 2020
USD ($)
Oct. 05, 2021
Dec. 31, 2020
USD ($)
Commitments and Contingencies Disclosure [Line Items]            
Number of barrels | bbl     8,000      
Asset Retirement Obligation $ 6,000   $ 6,000     $ 5,500
Estimated Litigation Liability, Current 100   100     $ 100
Subsequent Event [Member]            
Commitments and Contingencies Disclosure [Line Items]            
Penn Virginia Ownership of Combined Company         87.00%  
Other Pension, Postretirement and Supplemental Plans [Member]            
Commitments and Contingencies Disclosure [Line Items]            
Pension and Other Postretirement Benefits Cost (Reversal of Cost) 100 $ 100 $ 100 $ 100    
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 3,500   $ 3,500      
Contractual Obligation, Due 2022 through 2025 13,900   13,900      
Contractual Obligation, Due 2026 7,800   7,800      
Contractual Obligation, Due 2027 through 2030 3,800   3,800      
Contractual Obligation, Due 2031 $ 600   $ 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