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ACCOUNTING POLICIES (Details) (USD $) | 3 Months Ended | 12 Months Ended
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Dec. 29, 2014 | Sep. 27, 2014 | Jun. 28, 2014 | Mar. 29, 2014 | Dec. 28, 2013 | Sep. 28, 2013 | Jun. 29, 2013 | Mar. 30, 2013 | Jan. 03, 2015 | Dec. 28, 2013 | Dec. 29, 2012
Cash Equivalents and Concentrations of Credit Risk [Abstract] |  |  |  |  |  |  |  |  |  |  |
Amount of deposits insured by Federal Deposit Insurance Corporation (FDIC) |  |  |  |  |  |  |  |  | $ 250,000 us-gaap_CashFDICInsuredAmount |  |
Inventories [Abstract] |  |  |  |  |  |  |  |  |  |  |
LIFO inventory amount |  |  |  |  |  |  |  |  | 28,324,813 us-gaap_LIFOInventoryAmount |  |
FIFO inventory amount |  |  |  |  |  |  |  |  | 6,077,384 us-gaap_FIFOInventoryAmount |  |
Excess of current cost over LIFO carrying value |  |  |  |  | 6,689,000 us-gaap_ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue |  |  |  | 6,886,000 us-gaap_ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue | 6,689,000 us-gaap_ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Depreciation |  |  |  |  |  |  |  |  | 3,237,426 us-gaap_Depreciation | 3,592,263 us-gaap_Depreciation | 3,210,324 us-gaap_Depreciation
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Amortization expense |  |  |  |  |  |  |  |  | 248,876 us-gaap_AmortizationOfIntangibleAssets | 233,023 us-gaap_AmortizationOfIntangibleAssets | 229,476 us-gaap_AmortizationOfIntangibleAssets
Amortization expense fiscal year maturity [Abstract] |  |  |  |  |  |  |  |  |  |  |
2015 |  |  |  |  |  |  |  |  | 477,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths |  |
2016 |  |  |  |  |  |  |  |  | 476,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo |  |
2017 |  |  |  |  |  |  |  |  | 474,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree |  |
2018 |  |  |  |  |  |  |  |  | 474,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour |  |
2019 |  |  |  |  |  |  |  |  | 474,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  | 3,637,181 us-gaap_FiniteLivedIntangibleAssetsGross |  |  |  | 4,683,640 us-gaap_FiniteLivedIntangibleAssetsGross | 3,637,181 us-gaap_FiniteLivedIntangibleAssetsGross |
Accumulated Amortization |  |  |  |  | 2,179,678 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  |  |  | 2,185,070 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | 2,179,678 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |
Net per Balance Sheet |  |  |  |  | 1,457,503 us-gaap_FiniteLivedIntangibleAssetsNet |  |  |  | 2,498,570 us-gaap_FiniteLivedIntangibleAssetsNet | 1,457,503 us-gaap_FiniteLivedIntangibleAssetsNet |
Weighted-Average Amortization Period |  |  |  |  |  |  |  |  | 12 years 8 months 12 days | 16 years |
Goodwill [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 13,842,047 us-gaap_Goodwill |  |  |  | 13,933,599 us-gaap_Goodwill | 13,842,047 us-gaap_Goodwill | 13,933,599 us-gaap_Goodwill |
Acquisition of Argo Transdata |  |  |  |  |  |  |  |  | 1,225,226 us-gaap_GoodwillAcquiredDuringPeriod |  |
Foreign exchange |  |  |  |  |  |  |  |  | (106,919)us-gaap_GoodwillTranslationAdjustments | (91,552)us-gaap_GoodwillTranslationAdjustments |
Ending balance |  |  |  |  | 13,842,047 us-gaap_Goodwill |  |  |  | 14,960,354 us-gaap_Goodwill | 13,842,047 us-gaap_Goodwill | 13,933,599 us-gaap_Goodwill
Product Development Costs [Abstract] |  |  |  |  |  |  |  |  |  |  |
Product development costs |  |  |  |  |  |  |  |  | 1,079,557 us-gaap_ResearchAndDevelopmentExpense | 991,286 us-gaap_ResearchAndDevelopmentExpense | 814,096 us-gaap_ResearchAndDevelopmentExpense
Advertising Costs [Abstract] |  |  |  |  |  |  |  |  |  |  |
Advertising costs |  |  |  |  |  |  |  |  | 494,267 us-gaap_AdvertisingExpense | 486,027 us-gaap_AdvertisingExpense | 442,300 us-gaap_AdvertisingExpense
Basic [Abstract] |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding (in shares) | 6,231,729 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,223,140 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,222,676 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,222,213 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,221,851 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,221,515 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,220,569 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,219,775 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,225,068 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,220,928 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,216,931 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted [Abstract] |  |  |  |  |  |  |  |  |  |  |
Weighted average shares outstanding (in shares) | 6,231,729 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,223,140 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,222,676 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,222,213 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,221,851 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,221,515 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,220,569 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,219,775 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,225,068 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,220,928 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 6,216,931 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Dilutive stock options (in shares) |  |  |  |  |  |  |  |  | 12,846 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 16,830 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 16,444 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Denominator for diluted earnings per share (in shares) | 6,231,729 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,240,396 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,239,866 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,239,149 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,238,089 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,238,074 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,238,025 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,236,842 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,237,914 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,237,758 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 6,233,375 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Anti-dilutive stock options (in shares) |  |  |  |  |  |  |  |  | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount | 0 us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |
Stock options granted (in shares) |  |  |  |  |  |  |  |  | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember
Industrial Hardware Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  | 2,595,931 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |  |  | 2,494,261 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember | 2,595,931 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |
Accumulated Amortization |  |  |  |  | 1,676,440 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |  |  | 1,649,655 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember | 1,676,440 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |
Net per Balance Sheet |  |  |  |  | 919,491 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |  |  | 844,606 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember | 919,491 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |
Goodwill [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 2,008,231 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |  |  | 2,099,783 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember | 2,008,231 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember | 2,099,783 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |
Acquisition of Argo Transdata |  |  |  |  |  |  |  |  | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |
Foreign exchange |  |  |  |  |  |  |  |  | (106,919)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember | (91,552)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |
Ending balance |  |  |  |  | 2,008,231 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |  |  | 1,901,312 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember | 2,008,231 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |
Security Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  | 1,041,250 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |  |  | 2,189,379 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember | 1,041,250 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |
Accumulated Amortization |  |  |  |  | 503,238 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |  |  | 535,415 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember | 503,238 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |
Net per Balance Sheet |  |  |  |  | 538,012 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |  |  | 1,653,964 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember | 538,012 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |
Goodwill [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 11,833,816 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |  |  | 11,833,816 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember | 11,833,816 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember | 11,833,816 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |
Acquisition of Argo Transdata |  |  |  |  |  |  |  |  | 1,225,226 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |
Foreign exchange |  |  |  |  |  |  |  |  | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |
Ending balance |  |  |  |  | 11,833,816 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |  |  | 13,059,042 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember | 11,833,816 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |
Metal Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |
Accumulated Amortization |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |
Net per Balance Sheet |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember | 0 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |
Goodwill [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |  |  | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |
Acquisition of Argo Transdata |  |  |  |  |  |  |  |  | 0 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |
Foreign exchange |  |  |  |  |  |  |  |  | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember | 0 us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |
Ending balance |  |  |  |  | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |  |  | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember | 0 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |
Patents and Developed Technology [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 3,519,564 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = eml_PatentsAndDevelopedTechnologyMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 2,185,070 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = eml_PatentsAndDevelopedTechnologyMember |  |
Weighted-Average Amortization Period |  |  |  |  |  |  |  |  | 15 years 8 months 12 days |  |
Patents and Developed Technology [Member] | Industrial Hardware Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 2,494,261 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = eml_PatentsAndDevelopedTechnologyMember / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 1,649,655 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = eml_PatentsAndDevelopedTechnologyMember / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |
Patents and Developed Technology [Member] | Security Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 1,025,303 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = eml_PatentsAndDevelopedTechnologyMember / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 535,415 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = eml_PatentsAndDevelopedTechnologyMember / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |
Patents and Developed Technology [Member] | Metal Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = eml_PatentsAndDevelopedTechnologyMember / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = eml_PatentsAndDevelopedTechnologyMember / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |
Customer Relationships [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 449,706 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember |  |
Weighted-Average Amortization Period |  |  |  |  |  |  |  |  | 5 years |  |
Customer Relationships [Member] | Industrial Hardware Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / us-gaap_StatementBusinessSegmentsAxis = eml_IndustrialHardwareMember |  |
Customer Relationships [Member] | Security Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 449,706 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / us-gaap_StatementBusinessSegmentsAxis = eml_SecurityProductsMember |  |
Customer Relationships [Member] | Metal Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |
Intellectual Property [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 307,370 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_IntellectualPropertyMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_IntellectualPropertyMember |  |
Weighted-Average Amortization Period |  |  |  |  |  |  |  |  | 5 years |  |
Intellectual Property [Member] | Industrial Hardware Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
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Intellectual Property [Member] | Security Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
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Intellectual Property [Member] | Metal Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
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Non-Compete Agreements [Member] |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Useful lives of intangible assets |  |  |  |  |  |  |  |  | 5 years |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
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Weighted-Average Amortization Period |  |  |  |  |  |  |  |  | 5 years |  |
Non-Compete Agreements [Member] | Industrial Hardware Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
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Non-Compete Agreements [Member] | Security Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
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Non-Compete Agreements [Member] | Metal Products Segment [Member] |  |  |  |  |  |  |  |  |  |  |
Gross carrying amount and accumulated amortization of amortizable intangible assets [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gross Amount |  |  |  |  |  |  |  |  | 0 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |
Accumulated Amortization |  |  |  |  |  |  |  |  | $ 0 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember / us-gaap_StatementBusinessSegmentsAxis = eml_MetalProductsMember |  |
Minimum [Member] | Technology and Licenses [Member] |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Useful lives of intangible assets |  |  |  |  |  |  |  |  | 5 years |  |
Maximum [Member] | Technology and Licenses [Member] |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Useful lives of intangible assets |  |  |  |  |  |  |  |  | 17 years |  |
Building [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives of the assets |  |  |  |  |  |  |  |  | 10 years |  |
Building [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives of the assets |  |  |  |  |  |  |  |  | 39 years 6 months |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives of the assets |  |  |  |  |  |  |  |  | 3 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Estimated useful lives of the assets |  |  |  |  |  |  |  |  | 10 years |  |
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |  |  |  |  |  |
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The excess of replacement or current cost over the stated LIFO (last in first out) inventory value when the LIFO inventory method is utilized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph c -Article 5 + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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