Acquisitions and Divestitures - Schedule of Unaudited Pro forma Revenues and Expenses of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Net loss	$ 95,213	$ (44,733)
Bold Transaction
Business Acquisition [Line Items]
Revenue		126,839
Loss before taxes		(44,461)
Net loss		(35,617)
Less: Net loss attributable to noncontrolling interest		(22,005)
Net loss attributable to Earthstone Energy, Inc.		$ (13,612)
Pro forma net loss per common share attributable to Earthstone Energy, Inc.:
Basic and diluted (in dollars per share)		$ (0.57)