Supplemental Disclosures (Details 1) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Cash paid for interest expense, net of amounts capitalized	$ 58,860	$ 29,773
Increase in liabilities for oil and natural gas properties capital expenditures	26,862	5,157
Increase in liabilities for midstream properties capital expenditures	16,661	1,864
Increase in liabilities for accrued cost to issue senior notes	0	510
Transfer of inventory from oil and natural gas properties	211	305
Transfer of inventory to midstream properties	0	(2,691)
Mineral Properties
Condensed Cash Flow Statements, Captions [Line Items]
Increase (decrease) in asset retirement obligations	6,946	1,705
Midstream Properties
Condensed Cash Flow Statements, Captions [Line Items]
Increase (decrease) in asset retirement obligations	$ 169	$ 547