Quarterly report pursuant to Section 13 or 15(d)

Leases (Lease Cost on Consolidated Statement of Operations) (Details)

v3.21.2
Leases (Lease Cost on Consolidated Statement of Operations) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Lease Costs [Line Items]        
Total lease expense $ 6,555 $ 6,698 $ 19,739 $ 22,036
Lease costs capitalized   4   1,165
Total lease costs 6,555 6,702 19,739 23,201
Production Expense [Member]        
Lease Costs [Line Items]        
Total lease expense 3,827 2,063 10,328 6,082
General and Administrative Expense [Member]        
Lease Costs [Line Items]        
Total lease expense 49 49 145 147
Lease Costs Billed To The Joint Venture Owners [Member]        
Lease Costs [Line Items]        
Total lease expense $ 2,679 $ 4,586 $ 9,266 $ 15,807