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RETIREMENT BENEFIT PLANS (Details 7) - USD ($) | 12 Months Ended
--- | ---
Jan. 02, 2021 | Dec. 28, 2019
Contribution Plan [Abstract] |  |
Total contributions for the period | $ 1,564,661 | $ 1,484,664
Regular Matching Contributions [Member] |  |
Contribution Plan [Abstract] |  |
Total contributions for the period | 692,846 | 540,693
Transitional Credit Contributions [Member] |  |
Contribution Plan [Abstract] |  |
Total contributions for the period | 264,473 | 305,226
Non-Discretionary Contributions [Member] |  |
Contribution Plan [Abstract] |  |
Total contributions for the period | $ 607,342 | $ 638,745

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- References No definition available. + Details
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Namespace Prefix: | eml_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_RetirementPlanNameAxis=eml_RegularMatchingContributionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RetirementPlanNameAxis=eml_TransitionalCreditContributionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanNameAxis=eml_NonDiscretionaryContributionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |