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Retirement Benefit Plans (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 30, 2023 | Dec. 31, 2022
Pension Benefit [Member] |  |
Service cost | $ 864,611 | $ 1,078,973
Interest cost | 3,960,212 | 2,432,756
Expected return on plan assets | (4,196,060) | (5,842,641)
Amortization of prior service cost | 0 | 66,252
Amortization of the net loss | 1,371,460 | 1,560,299
Net periodic benefit cost | 2,000,223 | (704,361)
Other Postretirement Benefit [Member] |  |
Service cost | 25,945 | 53,291
Interest cost | 58,131 | 43,950
Expected return on plan assets | (19,396) | (17,600)
Amortization of prior service cost | 4,241 | 4,241
Amortization of the net loss | (67,581) | (8,214)
Net periodic benefit cost | $ 1,340 | $ 75,668

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