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Note 20 - Commitments and Contingencies (Details Textual) $ in Millions | Jun. 30, 2019 USD ($)
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Number of Company Operated Design Centers | 144
Number of Leased Retail Design Centers | 94
Purchase Obligation, Total | $ 23.9

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 The number of retail design centers that are under leases. + References No definition available. + Details
Name: | eth_NumberOfLeasedRetailDesignCenters
Namespace Prefix: | eth_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier. + References No definition available. + Details
Name: | us-gaap_PurchaseObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant