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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) (USD $)
Apr. 04, 2015
Jan. 03, 2015
Current Assets    
Accounts receivable, allowances $ 416,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 414,000us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Shareholders' Equity    
Voting Preferred Stock, no par value (in dollars per share) $ 0eml_VotingPreferredStockNoParValue $ 0eml_VotingPreferredStockNoParValue
Voting Preferred Stock, shares authorized (in shares) 1,000,000eml_VotingPreferredStockSharesAuthorizedInShares 1,000,000eml_VotingPreferredStockSharesAuthorizedInShares
Nonvoting Preferred Stock, no par value (in dollars per share) $ 0eml_NonvotingPreferredStockNoParValue $ 0eml_NonvotingPreferredStockNoParValue
Nonvoting Preferred Stock, shares authorized (in shares) 1,000,000eml_NonvotingPreferredStockSharesAuthorizedInShares 1,000,000eml_NonvotingPreferredStockSharesAuthorizedInShares
Common Stock, no par value (in dollars per share) $ 0us-gaap_CommonStockNoParValue $ 0us-gaap_CommonStockNoParValue
Common Stock, shares authorized (in shares) 50,000,000us-gaap_CommonStockSharesAuthorized 50,000,000us-gaap_CommonStockSharesAuthorized
Common Stock, shares issued (in shares) 8,939,120us-gaap_CommonStockSharesIssued 8,938,742us-gaap_CommonStockSharesIssued
Treasury Stock, shares (in shares) 2,694,729us-gaap_TreasuryStockShares 2,694,729us-gaap_TreasuryStockShares