Acquisitions and Divestitures - Schedule of Unaudited Pro forma Revenues and Expenses of Assets Acquired and Liabilities Assumed (Details) - Lynden Arrangement [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Business Acquisition [Line Items]
Revenue	$ 16,473	$ 32,677	$ 52,792
Income (loss) before taxes	1,698	(20,603)	142
Income (loss) available to Earthstone common stockholders	$ 1,165	$ (21,696)	$ 80
Pro Forma net income (loss) per common share:
Basic and diluted	$ 0.07	$ (1.12)	$ 0.00