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 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Lease Costs [Line Items]        
Total lease expense $ 6,566 $ 6,011 $ 13,184 $ 15,338
Lease costs capitalized   59   1,161
Total lease costs 6,566 6,070 13,184 16,499
Production Expense [Member]        
Lease Costs [Line Items]        
Total lease expense 3,852 1,814 6,501 4,019
General and Administrative Expense [Member]        
Lease Costs [Line Items]        
Total lease expense 47 49 96 98
Lease Costs Billed To The Joint Venture Owners [Member]        
Lease Costs [Line Items]        
Total lease expense $ 2,667 $ 4,148 $ 6,587 $ 11,221