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Note 14 - Recently Issued Accounting Pronouncements (Details Textual) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2015
Reclassification from Other Noncurrent Assets to Long Term Debt, Current [Member]
Unamortized Debt Issuance Expense		$ 300
Reclassification from Other Noncurrent Assets to Long Term Debt, Noncurrent [Member]
Unamortized Debt Issuance Expense		1,000
Unamortized Debt Issuance Expense	$ 970	$ 1,331

X

- Definition

The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=eth_ReclassificationFromOtherNoncurrentAssetsToLongTermDebtNoncurrentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: