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Supplemental Oil and Gas Disclosures - Schedule of Costs Incurred in Oil, Natural Gas and NGL Property Acquisition, Exploration and Development Activities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property acquisition costs:      
Proved properties $ 422,833 $ 27,660 $ 850,515
Unproved properties, not subject to amortization 95,242 16,062 65,063
Total property acquisition costs 518,075 43,722 915,578
Exploration costs 59,422 209,161 93,780
Development costs 362,011 292,547 215,467
Total costs incurred $ 939,508 $ 545,430 $ 1,224,825