Net Income Per Common Share - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income (loss) attributable to noncontrolling interest	$ 14,357,000	$ 340,000	$ 3,877,000	$ 8,032,000
Dilutive effect on net income (loss) per common share attributable to Earthstone Energy, Inc			$ 0

Amount of Net Income (Loss) attributable to noncontrolling interest.

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