Supplemental Disclosures (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Supplemental disclosures of cash flow information
Cash paid for interest expense, net of amounts capitalized	$ 75,525	$ 29,474	$ 32,760
Increase in asset retirement obligations related to mineral properties	2,912	2,614	4,385
Increase (decrease) in asset retirement obligations related to midstream properties	1,204	686	(60)
(Decrease) increase in liabilities for oil and natural gas properties capital expenditures	(15,877)	(16,802)	48,929
Increase (decrease) in liabilities for midstream properties capital expenditures	30,374	2,499	(955)
Stock-based compensation expense (benefit) recognized as liability	3,170	(1,069)	362
Decrease in liabilities for accrued cost to issue equity	0	0	(343)
Increase in liabilities for accrued cost to issue senior notes	0	232	0
Transfer of inventory from (to) oil and natural gas properties	1,515	409	(374)
Transfer of inventory to midstream properties	$ 0	$ 0	$ (317)