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Intangible Assets Other Than Goodwill - Schedule of Intangibale Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Intangible Assets Other Than Goodwill - Schedule Of Intangibale Assets Details    
Balance at December 31, $ 457us-gaap_IntangibleAssetsGrossExcludingGoodwill $ 367us-gaap_IntangibleAssetsGrossExcludingGoodwill
Amortization (34)us-gaap_AmortizationOfIntangibleAssets   
Foreign currency translation 3emri_ForeignCurrencyTranslationIntangibleAssets (18)emri_ForeignCurrencyTranslationIntangibleAssets
Balance at March 31 $ 426us-gaap_IntangibleAssetsGrossExcludingGoodwill $ 349us-gaap_IntangibleAssetsGrossExcludingGoodwill