Net Income Per Common Share - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss attributable to noncontrolling interest	$ 861,000	$ 52,888,000
Dilutive effect on net loss per common share attributable to Earthstone Energy, Inc	0
Total Earthstone Energy, Inc. Stockholders’ Equity
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net loss attributable to noncontrolling interest	$ 900,000
Class B Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001