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Note 19 - Segment Information - Sales By Country (Details) - Revenue Benchmark [Member] - Geographic Concentration Risk [Member] | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2020
--- | --- | --- | ---
UNITED STATES |  |  |
Percentage of Sales | 96.00% | 94.90% | 94.30%
Non-US [Member] |  |  |
Percentage of Sales | 4.00% | 5.10% | 5.70%

X
- Definition Represents the percentage of sales. + References No definition available. + Details
Name: | eth_PercentageOfSales
Namespace Prefix: | eth_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | srt_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GeographicConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementGeographicalAxis=us-gaap_NonUsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |