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Financial Instruments and Fair Value Measurements (Details)
Apr. 04, 2015
Customer
Jan. 03, 2015
Customer
Credit Risk [Abstract]    
Number of customers that represented more than 10% of trade receivables 0eml_NumberOfCustomersThatRepresentedMoreThanSpecifiedPercentageOfTradeReceivables 0eml_NumberOfCustomersThatRepresentedMoreThanSpecifiedPercentageOfTradeReceivables
Term Loan [Member]    
Interest Rate Risk [Abstract]    
Fixed rate of interest (in hundredths) 4.98%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_MediumTermNotesMember		  
2012 Term Loan [Member]    
Interest Rate Risk [Abstract]    
Fixed rate of interest (in hundredths) 3.90%us-gaap_LongTermDebtPercentageBearingFixedInterestRate
/ us-gaap_LongtermDebtTypeAxis
= eml_TermLoan2012Member