Acquisitions and Divestitures - Schedule of Unaudited Pro forma Revenues and Expenses of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Acquisition [Line Items]
Net income (loss)	$ 1,472	$ (54,967)	$ 13,663	$ (54,238)
Bold Transaction
Business Acquisition [Line Items]
Revenue		33,176		62,755
Loss before taxes		(55,939)		(45,854)
Net income (loss)		(46,025)		(35,902)
Less: Net loss available to noncontrolling interest		(28,557)		(22,056)
Net loss attributable to Earthstone Energy, Inc.		$ (17,468)		$ (13,846)
Pro forma net loss per common share attributable to Earthstone Energy, Inc.:
Basic (in dollars per share)		$ (0.77)		$ (0.59)
Diluted (in dollars per share)		$ (0.77)		$ (0.59)