Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities (Schedule of Cash Paid (Received)) (Details)

v3.20.2
Derivative Instruments and Hedging Activities (Schedule of Cash Paid (Received)) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Cash flows from operating activities        
Cash (paid) received for commodity derivative settlements $ 98,688 $ (1,157) $ 101,301 $ (1,447)
Not Designated as Hedging Instrument | Gain on contingent consideration arrangements        
Cash flows from investing activities        
Cash paid for settlements of contingent consideration arrangements, net 0 0 (40,000) 0
Commodity - Oil | Not Designated as Hedging Instrument        
Cash flows from operating activities        
Cash (paid) received for commodity derivative settlements 100,470 (4,461) 98,693 (6,003)
Commodity - Natural gas | Not Designated as Hedging Instrument        
Cash flows from operating activities        
Cash (paid) received for commodity derivative settlements $ (1,782) $ 3,304 $ 2,608 $ 4,556