Retirement Benefit Plans (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Pension Benefit [Member]
Service Cost	$ 269,744	$ 271,832	$ 809,231	$ 815,500
Interest Cost	608,188	504,252	1,824,568	1,512,761
Expected Return On Plan Assets	1,460,658	1,448,671	4,381,980	4,346,020
Amortization Of Prior Service Cost	16,563	24,845	49,689	74,535
Amortization Of The Net Loss	390,075	432,539	1,170,225	1,297,614
Net Periodic Benefit Cost	(176,088)	(215,203)	(528,267)	(645,610)
Other Postretirement Benefit [Member]
Service Cost	13,323	13,626	39,969	40,878
Interest Cost	10,988	9,842	32,964	29,526
Expected Return On Plan Assets	4,400	6,420	13,200	19,260
Amortization Of Prior Service Cost	1,060	0	3,180	0
Amortization Of The Net Loss	(2,054)	(3,094)	(6,162)	(9,282)
Net Periodic Benefit Cost	$ (18,917)	$ (13,954)	$ (56,751)	$ (41,862)