Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Leases (Lease Cost on Consolidated Statement of Operations) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Lease Costs [Line Items]        
Total lease expense $ 6,698 $ 6,638 $ 22,036 $ 17,114
Lease costs capitalized 4 99 1,165 99
Total lease cost 6,702 6,737 23,201 17,213
Production Expense [Member]        
Lease Costs [Line Items]        
Total lease expense 2,063 1,979 6,082 5,202
General and Administrative Expense [Member]        
Lease Costs [Line Items]        
Total lease expense 49 49 147 147
Lease Costs Billed To Joint Venture Owners [Member]        
Lease Costs [Line Items]        
Total lease expense $ 4,586 $ 4,610 $ 15,807 $ 11,765