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Note 11 - Income Taxes - Deferred Tax Assets Expiration With Respect to Net Operating Losses (Details) $ in Thousands | 12 Months Ended
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Jun. 30, 2017 USD ($)
Domestic Tax Authority [Member] |
Net Operating Loss Carryforwards | $ 23,760
Deferred Income Tax Assets | 1,110
Foreign Tax Authority [Member] |
Net Operating Loss Carryforwards | 7,622
Deferred Income Tax Assets | $ 2,577

X
- Definition Amounts associated with deferred tax benefits on net operating losses for foreign taxing jurisdictions that are subject to expiration + References No definition available. + Details
Name: | eth_DeferredIncomeTaxAssetsSubjectToExpire
Namespace Prefix: | eth_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amounts associated with deferred tax benefits on net operating losses for foreign taxing jurisdictions that are subject to expiration. + References No definition available. + Details
Name: | eth_NetOperatingLossCarryforwardsSubjectToExpire
Namespace Prefix: | eth_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |