Supplemental Disclosures (Details 1) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash paid for interest expense, net of amounts capitalized	$ 71,890	$ 58,860
(Decrease) increase in liabilities for oil and natural gas properties capital expenditures	(18,710)	26,862
(Decrease) increase in liabilities for midstream properties capital expenditures	(10,653)	16,661
Stock-based compensation expense recognized as liability	1,434	2,087
Transfer of inventory (to) from oil and natural gas properties	(445)	211
Mineral Properties
Condensed Cash Flow Statements, Captions [Line Items]
Increase (decrease) in asset retirement obligations	(232)	6,946
Midstream Properties
Condensed Cash Flow Statements, Captions [Line Items]
Increase (decrease) in asset retirement obligations	$ 472	$ 169