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 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Lease Costs [Line Items]        
Total lease expense $ 6,011 $ 5,284 $ 15,338 $ 10,476
Lease costs capitalized 59 1,161  
Total lease cost 6,070 5,284 16,499 10,476
Production Expense [Member]        
Lease Costs [Line Items]        
Total lease expense 1,814 1,626 4,019 3,223
General and Administrative Expense [Member]        
Lease Costs [Line Items]        
Total lease expense 49 49 98 98
Lease Costs Billed To Joint Venture Owners [Member]        
Lease Costs [Line Items]        
Total lease expense $ 4,148 $ 3,609 $ 11,221 $ 7,155