Asset Acquisition, Equity Interest Issued Or Issuable, Number Of Shares

No definition available.

Name:	este_AssetAcquisitionEquityInterestIssuedOrIssuableNumberOfShares
Namespace Prefix:	este_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Asset Acquisition, Percentage Of Voting Interest Acquired

+ References

No definition available.

+ Details

Name:	este_AssetAcquisitionPercentageOfVotingInterestAcquired
Namespace Prefix:	este_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Business Combination, Number Of Separate Sellers

+ References

No definition available.

+ Details

Name:	este_BusinessCombinationNumberOfSeparateSellers
Namespace Prefix:	este_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Related Party Transaction, Proceeds From Sale of Oil and Gas Leases

+ References

No definition available.

+ Details

Name:	este_RelatedPartyTransactionProceedsFromSaleofOilandGasLeases
Namespace Prefix:	este_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6613-128477

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=116859721&loc=d3e6578-128477

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount awarded from other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmountAwardedFromOtherParty
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 30
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123362884&loc=d3e9212-128498

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 30
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123362884&loc=d3e9215-128498

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 50
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=123385561&loc=d3e9135-128495

+ Details

Name:	us-gaap_PaymentsToAcquireProductiveAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_BusinessAcquisitionAxis=este_EagleFordAcquisitionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=este_EagleFordSellerOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AssetAcquisitionAxis=este_TrackerAndSequelAcquisitionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AssetAcquisitionAxis=este_TrackerAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=este_SignificantShareholderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_SettledLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_GainContingenciesByNatureAxis=us-gaap_InsuranceSettlementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Related Party Transactions (Details) $ in Millions			2 Months Ended	3 Months Ended	9 Months Ended
Related Party Transactions (Details) $ in Millions	Jul. 20, 2021 USD ($) shares	Feb. 12, 2020 USD ($)	Jun. 30, 2021 USD ($) seller	Jun. 30, 2021 USD ($) seller	Sep. 30, 2021 USD ($)
Related Party Transaction [Line Items]
Proceeds from sale of interest in oil and gas leases		$ 0.4
Eagle Ford Acquisitions
Related Party Transaction [Line Items]
Total consideration transferred			$ 48.0	$ 48.0
Number of separate sellers \| seller			4	4
Eagle Ford, Seller One
Related Party Transaction [Line Items]
Total consideration transferred				$ 8.2
Tracker And Sequel Aquisitions \| Class A Common Stock
Related Party Transaction [Line Items]
Shares of earthstone class A common stock issued (in shares) \| shares	6,200,000
Tracker Purchase Agreement
Related Party Transaction [Line Items]
Cash consideration	$ 22.5
Shares of earthstone class A common stock issued (in shares) \| shares	4,700,000
Tracker Purchase Agreement \| Class A Common Stock
Related Party Transaction [Line Items]
Shares of earthstone class A common stock issued (in shares) \| shares	4,700,000
Tracker Purchase Agreement \| Significant Shareholder
Related Party Transaction [Line Items]
Asset acquisition, percentage of voting interest acquired					49.00%
Settled Litigation \| Insurance Settlement
Related Party Transaction [Line Items]
Settlement reimbursement					$ 1.1