Net (Loss) Income Per Common Share - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income (loss) attributable to noncontrolling interest	$ (4,723,000)	$ 20,006,000
Class B Common Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income (loss) attributable to noncontrolling interest		20,000,000.0
Net income (loss) attributable to Earthstone Energy, Inc		$ 0