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Note 15 - Subsequent Events (Details Textual) (Subsequent Event [Member])	0 Months Ended
	Apr. 13, 2015
Subsequent Event [Member]
Stock Repurchase Program, Additional Number of Shares Authorized to be Repurchased	2,000,000eth_StockRepurchaseProgramAdditionalNumberOfSharesAuthorizedToBeRepurchased / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Stock Repurchase Program, Number of Shares Authorized to be Repurchased	2,997,724us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

X

- Definition

The additional number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

Name:	eth_StockRepurchaseProgramAdditionalNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	eth_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant