Quarterly report pursuant to Section 13 or 15(d)

Leases (Details)

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Leases (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2020
Lessee, Lease, Description [Line Items]      
Operating Lease, Right-of-Use Asset $ 2,237   $ 2,432
Operating Lease, Liability, Current 894   936
Noncurrent operating lease obligations 1,553   $ 1,752
Operating Lease, Cost 216 $ 210  
Short-term Lease, Cost 2,752 11,296  
Variable Lease, Cost 4,874 5,657  
Amounts charged as dilling costs [1] (2,082) (10,621)  
Lease, Cost [2] 5,760 6,542  
Estimated Litigation Liability, Current 100    
Natural Gas, Gathering, Transportation, Marketing and Processing [Member]      
Lessee, Lease, Description [Line Items]      
Lease, Cost [2] 2,200 2,800  
Operating Expense [Member]      
Lessee, Lease, Description [Line Items]      
Lease, Cost [2] 3,300 3,500  
General and Administrative Expense [Member]      
Lessee, Lease, Description [Line Items]      
Lease, Cost [2] $ 200 $ 200  
[1] 1    Represents the combined gross amounts incurred and (i) capitalized as drilling costs for our working interest share and (ii) billed to joint interest partners for their working interest share for short-term leases of operated drilling rigs.
[2] 2    Includes $2.2 million and $2.8 million recognized in Gathering, processing and transportation expense (“GPT”), $3.3 million and $3.5 million recognized in Lease operating expense (“LOE”) for the three months ended March 31, 2021 and 2020, respectively, and $0.2 million recognized in G&A for each of the three months ended March 31, 2021 and 2020.