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Note 18 - Segment Information (Details Textual) | 6 Months Ended
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Dec. 31, 2023
Number of Reportable Segments | 2
Number of Company Operated Design Centers | 141

X
- Definition Represents the number of design centers that are company operated. + References No definition available. + Details
Name: | eth_NumberOfCompanyOperatedDesignCenters
Namespace Prefix: | eth_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-18 + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration