Retirement Benefit Plans (Details) - USD ($)	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Pension Benefit [Member]
Service Cost	$ 269,744	$ 271,833
Interest Cost	608,189	504,255
Expected Return On Plan Assets	1,460,661	1,448,674
Amortization Of Prior Service Cost	16,563	24,845
Amortization Of The Net Loss	390,075	432,539
Net Periodic Benefit Cost	176,090	215,202
Other Postretirement Benefit [Member]
Service Cost	13,323	13,626
Interest Cost	10,988	9,842
Expected Return On Plan Assets	4,400	6,420
Amortization Of Prior Service Cost	1,060	0
Amortization Of The Net Loss	(2,054)	(3,094)
Net Periodic Benefit Cost	(18,917)	(13,954)
Gain On Significant Event	$ 0	$ 0