Net Income (Loss) Per Common Share - Narrative (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss attributable to noncontrolling interest	$ 52,888,000	$ (32,219,000)
Dilutive effect on Net loss per common share attributable to Earthstone Energy, Inc	0
Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of restricted stock units excluded from calculating diluted earnings per share		105,422
Total Earthstone Energy, Inc. Stockholders' Equity
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss attributable to noncontrolling interest	$ 52,900,000

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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

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