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Retirement Benefit Plans (Details 2) - USD ($) | 12 Months Ended
--- | ---
Dec. 30, 2023 | Dec. 31, 2022
Other Postretirement Benefit [Member] |  |
Benefit obligation at beginning of year | $ 1,151,126 | $ 1,724,582
Change in discount rate | 35,126 | (562,340)
Service cost | 25,945 | 53,291
Interest cost | 58,131 | 43,950
Actuarial (gain)/loss | (162,766) | (73,395)
Benefits paid | (37,286) | (34,962)
Benefit obligation at end of year | 1,070,276 | 1,151,126
Net amount recognized in the balance sheet | (554,758) | (666,222)
Pension Plans Defined Benefit [Member] |  |
Benefits paid | (4,870,701) | (4,756,015)
Fair value of plan assets at beginning of year | 58,527,250 | 80,814,956
Actual return on plan assets | 5,902,956 | (17,701,556)
Employer contributions | 1,277,138 | 169,865
Fair value of plan assets at end of year | 60,836,643 | 58,527,250
Pension Benefits [Member] |  |
Benefit obligation at beginning of year | 80,701,715 | 107,420,338
Change in discount rate | 1,794,084 | (26,408,548)
Service cost | 864,611 | 1,078,973
Interest cost | 3,960,212 | 2,432,756
Actuarial (gain)/loss | (587,910) | 934,211
Benefits paid | (4,870,701) | (4,756,015)
Benefit obligation at end of year | 81,862,011 | 80,701,715
Net amount recognized in the balance sheet | (21,025,365) | (22,174,465)
Other Postretirement Benefit Plans Defined Benefit [Member] |  |
Benefits paid | (51,180) | (49,158)
Fair value of plan assets at beginning of year | 484,904 | 439,993
Actual return on plan assets | (16,501) | 44,911
Employer contributions | 51,180 | 49,158
Fair value of plan assets at end of year | $ 468,403 | $ 484,904

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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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