Acquisitions - Pro Forma (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Business Combination and Asset Acquisition [Abstract]
Revenue	$ 38,311	$ 166,939	$ 103,844
Loss before taxes	(47,272)	(28,823)	41,494
Net loss	(46,083)	(28,019)	41,178
Less: Net loss attributable to noncontrolling interest	(20,853)	(12,413)	18,556
Net loss attributable to Earthstone Energy, Inc.	$ (25,230)	$ (15,606)	$ 22,622
Basic (in dollars per share)	$ (0.60)	$ (0.34)	$ 0.53
Diluted (in dollars per share)	$ (0.60)	$ (0.34)	$ 0.53