Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Oil and natural gas properties
Evaluated (subject to amortization)	$ 5,295,931	$ 4,557,265
Total unproved and unevaluated	902,133	1,126,992
Total oil and natural gas properties	6,198,064	5,684,257
Accumulated depletion	(3,623,265)	(2,603,681)
Net oil and natural gas properties	2,574,799	3,080,576
Midstream Properties [Abstract]
Midstream properties	841,695	643,903
Accumulated depreciation	3,701,551	2,655,586
Other property and equipment
Other property and equipment	29,561	27,021
Accumulated depreciation	(17,173)	(13,432)
Net other property and equipment	12,388	13,589
Net property and equipment	3,367,769	3,699,595
Midstream equipment and facilities
Midstream Properties [Abstract]
Midstream properties	841,695	643,903
Accumulated depreciation	61,113	38,473
Net midstream properties	780,582	605,430
Furniture, fixtures and other equipment
Other property and equipment
Other property and equipment	10,591	9,170
Software
Other property and equipment
Other property and equipment	8,116	8,099
Leasehold improvements
Other property and equipment
Other property and equipment	$ 10,854	$ 9,752