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Supplemental Disclosures to the Financial Statements - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Reclassification [Line Items]          
Deferred financing costs, net of amortization $ 5,000   $ 5,000   $ 7,000
Asset retirement obligation, decrease     20,000    
Asset retirement obligation, noncurrent 115,458   115,458   135,192
Asset retirement obligations - current portion 20,000   20,000   25,000
Asset retirement obligation, liabilities settled     12,000    
Asset retirement obligation, property sales     2,000    
Asset retirement obligation, accretion expense     8,000    
Asset retirement obligation, decrease in the short-term portion     5,000    
Asset retirement obligation, liabilities incurred     1,000    
Greenhouse gas liability, noncurrent 25,000   25,000    
Other operating expenses 3,986 $ 1,648 4,827 $ 2,658  
Supplemental property tax assessments and royalty audit charges and tank rental costs     3,000    
Other costs     1,000    
Employee retention credits     2,000    
Excess abandonment costs       2,000  
Oil tank storage fees       1,000  
Drilling rig standby charges       1,000  
Taxes and other refunds       $ 1,000  
Bank overdrafts 0   0   $ 2,000
Revolving Credit Facility | 2017 RBL Facility | Line of Credit          
Reclassification [Line Items]          
Unamortized debt issuance costs expensed 3,000   3,000    
Basic Energy Services, Inc. , California Business Lines          
Reclassification [Line Items]          
Escrow deposit 10,400   10,400    
Revision of Prior Period, Reclassification, Adjustment          
Reclassification [Line Items]          
Asset retirement obligation, noncurrent (20,000)   (20,000)    
Asset retirement obligations - current portion $ 20,000   $ 20,000