| Cover | Aug. 05, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Aug. 5, 2020 |
| Entity Central Index Key | 0000010254 |
| Entity Registrant Name | Earthstone Energy, Inc. |
| Amendment Flag | false |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-35049 |
| Entity Tax Identification Number | 84-0592823 |
| Entity Address, Address Line One | 1400 Woodloch Forest Drive |
| Entity Address, Address Line Two | Suite 300 |
| Entity Address, City or Town | The Woodlands |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77380 |
| City Area Code | 281 |
| Local Phone Number | 298-4246 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common Stock, $0.001 par value per share |
| Trading Symbol | ESTE |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
