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Retirement Benefit Plans (Details 2) - USD ($)
 12 Months Ended
Dec. 28, 2024
Dec. 30, 2023
Other Postretirement Benefit [Member]    
Change in discount rate $ (81,579) $ 35,126
Service cost 14,296 25,945
Interest cost 51,805 58,131
Plan amendment (44,757)  
Actuarial (gain)/loss (85,064) (162,766)
Benefits paid (27,362) (37,286)
Benefit obligation at end of year 897,615 1,070,276
Net amount recognized in the balance sheet (410,476) (554,758)
Benefit obligation at beginning of year 1,070,276 1,151,126
Pension Benefits [Member]    
Change in discount rate (4,449,660) 1,794,084
Service cost 712,013 864,611
Interest cost 3,866,809 3,960,212
Actuarial (gain)/loss (924,172) (587,910)
Benefits paid (5,150,941) (4,870,701)
Benefit obligation at end of year 75,916,060 81,862,011
Net amount recognized in the balance sheet (16,604,840) (21,025,365)
Benefit obligation at beginning of year 81,862,011 80,701,715
Pension Plans Defined Benefit [Member]    
Benefits paid (5,150,941) (4,870,701)
Fair value of plan assets at beginning of year 60,836,643 58,527,250
Actual return on plan assets 1,509,268 5,902,956
Employer contributions 2,116,250 1,277,138
Fair value of plan assets at end of year 59,311,220 60,836,643
Other Postretirement Benefit Plans Defined Benefit [Member]    
Benefits paid (46,479) (51,180)
Fair value of plan assets at beginning of year 468,403 484,904
Actual return on plan assets 18,736 (16,501)
Employer contributions 46,479 51,180
Fair value of plan assets at end of year $ 487,139 $ 468,403