Cover Page - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 04, 2021	Jun. 30, 2020
Document And Entity Information [Line Items]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2020
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-35049
Entity Registrant Name	EARTHSTONE ENERGY, INC.
Entity Incorporation, State or Country Code	DE
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
Title of 12(b) Security	Class A Common Stock, $0.001 par value per share
Trading Symbol	ESTE
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 64,727,959
Amendment Flag	true
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Central Index Key	0000010254
Amendment Description	This Form 10-K/A (this “Amendment”) amends Earthstone Energy, Inc.’s (“Earthstone” and together with our consolidated subsidiaries, the “Company,” “our,” “we,” “us,” or similar terms) Annual Report on Form 10-K for the year ended December 31, 2020 (the “Original 10-K”), which was filed with the Securities and Exchange Commission (the “SEC”) on March 10, 2021. The Company is filing this Amendment for the sole purpose of providing the information required by Items 10 through 14 of Part III of Form 10-K. This information was previously omitted from the Original 10-K in reliance on General Instruction G.(3) to Form 10-K. The reference on the cover page of the Original 10-K to the incorporation by reference to portions of our definitive proxy statement into Part III of the Original 10-K is hereby deleted.
Class A Common Stock
Document And Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		43,646,391
Class B Common Stock
Document And Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		34,443,898