Quarterly report pursuant to Section 13 or 15(d)

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

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Derivative Instruments and Hedging Activities - Schedule of Cash Paid (Received) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Cash flows from operating activities        
Cash received (paid) for commodity derivative settlements, net $ (85,409) $ 98,688 $ (127,571) $ 101,301
Not Designated as Hedging Instrument | (Gain) loss on contingent consideration arrangements        
Cash flows from investing activities        
Cash paid for settlements of contingent consideration arrangements, net 0 0 0 (40,000)
Commodity - Oil | Not Designated as Hedging Instrument        
Cash flows from operating activities        
Cash received (paid) for commodity derivative settlements, net (82,413) 100,470 (122,360) 98,693
Commodity - Natural gas | Not Designated as Hedging Instrument        
Cash flows from operating activities        
Cash received (paid) for commodity derivative settlements, net (1,906) (1,782) (3,275) 2,608
Natural gas liquids | Not Designated as Hedging Instrument        
Cash flows from operating activities        
Cash received (paid) for commodity derivative settlements, net $ (1,090) $ 0 $ (1,936) $ 0