RETIREMENT BENEFIT PLANS (Details) - USD ($)	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019
Pension Benefit [Member]
Service cost	$ 1,065,739	$ 1,055,410
Interest cost	2,856,569	3,516,318
Expected return on plan assets	(5,461,044)	(4,761,320)
Amortization of prior service cost	99,380	99,380
Amortization of the net loss	1,300,134	1,162,196
Net periodic benefit cost	(139,222)	1,071,984
Other Postretirement Benefit [Member]
Service cost	43,418	33,287
Interest cost	46,668	56,755
Expected return on plan assets	(22,355)	(28,033)
Amortization of prior service cost	(8,253)	(5,072)
Amortization of the net loss	(25,509)	(47,272)
Net periodic benefit cost	$ 33,969	$ 9,665