Retirement Benefit Plans (Details) - USD ($)	3 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
Pension Benefit [Member]
Service cost	$ 177,462	$ 178,003
Interest cost	951,097	966,702
Expected return on plan assets	(1,059,936)	(1,099,035)
Amortization of the net loss	290,615	327,365
Net periodic benefit cost	359,238	373,035
Other Postretirement Benefit [Member]
Service cost	2,125	3,574
Interest cost	11,683	12,951
Expected return on plan assets	(4,780)	(4,684)
Amortization of prior service cost	(832)	1,060
Amortization of the net loss	(23,093)	(19,567)
Net periodic benefit cost	$ (14,897)	$ (6,666)