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RETIREMENT BENEFIT PLANS (Details 6) - Pension Benefit [Member] - USD ($) | Jan. 01, 2022 | Jan. 02, 2021
--- | --- | ---
Fair value of plan assets at beginning of year | $ 80,814,956 | $ 78,361,102
Level 1 [Member] |  |
Fair value of plan assets at beginning of year | 5,460,173 | 5,230,134
Level 2 [Member] |  |
Fair value of plan assets at beginning of year | 75,354,783 | 73,130,968
Level 3 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Common/Collective Trust Funds [Member] |  |
Fair value of plan assets at beginning of year | 356,173 | 347,538
Common/Collective Trust Funds [Member] | Level 1 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Common/Collective Trust Funds [Member] | Level 2 [Member] |  |
Fair value of plan assets at beginning of year | 356,173 | 347,538
Common/Collective Trust Funds [Member] | Level 3 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
EasternCompanyCommonStock [Member] |  |
Fair value of plan assets at beginning of year | 5,460,173 | 5,230,134
EasternCompanyCommonStock [Member] | Level 1 [Member] |  |
Fair value of plan assets at beginning of year | 5,460,173 | 5,230,134
EasternCompanyCommonStock [Member] | Level 3 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Multi Asset Core Plus Fund [Member] |  |
Fair value of plan assets at beginning of year | 36,142,837 | 35,139,260
Multi Asset Core Plus Fund [Member] | Level 1 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Multi Asset Core Plus Fund [Member] | Level 2 [Member] |  |
Fair value of plan assets at beginning of year | 36,142,837 | 35,139,260
Multi Asset Core Plus Fund [Member] | Level 3 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Russell 25 Year LDI Fixed Income Fund [Member] |  |
Fair value of plan assets at beginning of year | 4,320,207 | 2,506,615
Russell 25 Year LDI Fixed Income Fund [Member] | Level 1 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Russell 25 Year LDI Fixed Income Fund [Member] | Level 2 [Member] |  |
Fair value of plan assets at beginning of year | 4,320,207 | 2,506,615
Russell 25 Year LDI Fixed Income Fund [Member] | Level 3 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Russell 14 Year LDI Fixed Income Fund [Member] |  |
Fair value of plan assets at beginning of year | 26,430,482 | 26,452,904
Russell 14 Year LDI Fixed Income Fund [Member] | Level 1 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Russell 14 Year LDI Fixed Income Fund [Member] | Level 2 [Member] |  |
Fair value of plan assets at beginning of year | 26,430,482 | 26,452,904
Russell 14 Year LDI Fixed Income Fund [Member] | Level 3 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Russell 15 to 20 Year STRIPS Fixed Income Fund [Member] |  |
Fair value of plan assets at beginning of year | 3,264,328 | 3,500,718
Russell 15 to 20 Year STRIPS Fixed Income Fund [Member] | Level 1 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Russell 15 to 20 Year STRIPS Fixed Income Fund [Member] | Level 2 [Member] |  |
Fair value of plan assets at beginning of year | 3,264,328 | 3,500,718
Russell 15 to 20 Year STRIPS Fixed Income Fund [Member] | Level 3 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Russell 10 to 15 Year STRIPS Fixed Income Fund [Member] |  |
Fair value of plan assets at beginning of year | 4,840,756 | 5,183,933
Russell 10 to 15 Year STRIPS Fixed Income Fund [Member] | Level 1 [Member] |  |
Fair value of plan assets at beginning of year | 0 | 0
Russell 10 to 15 Year STRIPS Fixed Income Fund [Member] | Level 2 [Member] |  |
Fair value of plan assets at beginning of year | 4,840,756 | 5,183,933
Russell 10 to 15 Year STRIPS Fixed Income Fund [Member] | Level 3 [Member] |  |
Fair value of plan assets at beginning of year | $ 0 | $ 0

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