Supplemental Disclosures (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental disclosures of cash flow information
Cash paid for interest expense, net of amounts capitalized	$ 76,880	$ 75,525	$ 29,474
(Decrease) increase in asset retirement obligations related to mineral properties	(208)	2,912	2,614
Increase in asset retirement obligations related to midstream properties	690	1,204	686
Decrease in liabilities for drilling, completion and equipping capital expenditures	(26,126)	(13,310)	(21,032)
(Decrease) increase in liabilities for acquisition of oil and natural gas properties	(2,346)	(2,567)	4,230
(Decrease) increase in liabilities for midstream capital expenditures	(33,609)	30,374	2,499
Stock-based compensation expense (benefit) recognized as liability	3,702	3,170	(1,069)
Increase in liabilities for accrued cost to issue senior notes	0	0	232
Transfer of inventory from oil and natural gas properties	$ 608	$ 1,515	$ 409