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Commitments and Contingencies (Details Narrative) (USD $)
In Thousands, unless otherwise specified
 1 Months Ended 3 Months Ended 12 Months Ended 48 Months Ended 1 Months Ended
Sep. 30, 2014
Dec. 31, 2014
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jun. 30, 2014
Lease expire period term    

2015 through 2033

      
Total rent expense, net of sublease income     $ 200us-gaap_OperatingLeasesRentExpenseNet $ 300us-gaap_OperatingLeasesRentExpenseNet    
Repayment claim reduced     62emri_RepaymentClaimReduced      
Received grants duration period     4 years      
Repayment claim reduced duration period         4 years  
Claim amount received 21emri_ClaimAmountRecived          
Income   389us-gaap_Revenues        
Euro [Member]            
Claim amount received 17emri_ClaimAmountRecived
/ us-gaap_CurrencyAxis
= currency_EUR		          
Direction Generale Des Finances Publiques [Member]            
Repayment claim reduced           430emri_RepaymentClaimReduced
/ us-gaap_RelatedPartyTransactionAxis
= emri_DirectionGeneraleDesFinancesPubliquesMember
Aggregate sum of repayment of grants received     227emri_AggregateSumOfRepaymentOfGrantsReceived
/ us-gaap_RelatedPartyTransactionAxis
= emri_DirectionGeneraleDesFinancesPubliquesMember		      
Direction Generale Des Finances Publiques [Member] | Euro [Member]            
Repayment claim reduced           354emri_RepaymentClaimReduced
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_RelatedPartyTransactionAxis
= emri_DirectionGeneraleDesFinancesPubliquesMember
Aggregate sum of repayment of grants received     $ 187emri_AggregateSumOfRepaymentOfGrantsReceived
/ us-gaap_CurrencyAxis
= currency_EUR
/ us-gaap_RelatedPartyTransactionAxis
= emri_DirectionGeneraleDesFinancesPubliquesMember