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
	Mar. 31, 2018	Mar. 31, 2017
Business Acquisition [Line Items]
Net income	$ 12,191	$ 729
Bold Transaction
Business Acquisition [Line Items]
Revenue		31,410
Income before taxes		11,101
Net income		11,139
Less: Net income available to noncontrolling interest		6,812
Net income attributable to Earthstone Energy, Inc.		$ 4,327
Pro forma net loss per common share attributable to Earthstone Energy, Inc.:
Basic (in dollars per share)		$ 0.19
Diluted (in dollars per share)		$ 0.19