Stock-Based Compensation - Schedule of Target Multipliers (Details) - Performance Stock Units	3 Months Ended
	Mar. 31, 2021
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earthstone’s Annualized TSR	7700.00%
20.5% or greater | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earthstone’s Annualized TSR	20500.00%
20.5% or greater | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
TSR Multiplier	200000.00%
14.5% | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earthstone’s Annualized TSR	1450000.00%
14.5% | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
TSR Multiplier	100000.00%
7.7% | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Earthstone’s Annualized TSR	7700.00%
7.7% | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
TSR Multiplier	50000.00%
Less than 7.7% | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
TSR Multiplier	0.00%