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Note 10 - Other Current Liabilities (Details Textual) - USD ($) $ in Thousands | Sep. 30, 2022 | Aug. 01, 2022 | Jun. 30, 2022
--- | --- | --- | ---
Sale Lease Back Transaction Deferred Liabilities | $ 4,800 | $ 5,200 |
Sale Leaseback Transaction, Deferred Liabilities, Current | 2,620 |  | $ 0
Other Current Liabilities [Member] |  |  |
Sale Leaseback Transaction, Deferred Liabilities, Current | 2,600 |  |
Other Long-term Liabilities [Member] |  |  |
Sale Leaseback Transaction, Deferred Liabilities, Noncurrent | $ 2,200 |  |

X
- Definition Represents sale lease back transaction deferred liabilities. + References No definition available. + Details
Name: | eth_SaleLeaseBackTransactionDeferredLiabilities
Namespace Prefix: | eth_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents Sale Leaseback Transaction, Deferred Liabilities. + References No definition available. + Details
Name: | eth_SaleLeasebackTransactionDeferredLiabilitiesCurrent
Namespace Prefix: | eth_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents Sale Leaseback Transaction, Deferred Liabilities, Noncurrent + References No definition available. + Details
Name: | eth_SaleLeasebackTransactionDeferredLiabilitiesNoncurrent
Namespace Prefix: | eth_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=eth_OtherLongTermLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |