RETIREMENT BENEFIT PLANS, Net Periodic Benefit Cost and Assumptions (Details) - USD ($)	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
RETIREMENT BENEFIT PLANS [Abstract]
Increase in expense of unrecognized prior service cost		$ 14,928
Pension Benefit [Member]
Components of the net periodic benefit cost [Abstract]
Service cost	$ 1,055,410	1,319,841
Interest cost	3,516,318	3,107,164
Expected return on plan assets	(4,761,320)	(5,219,515)
Amortization of prior service cost	99,380	114,822
Amortization of the net loss	1,162,196	1,110,111
Net periodic benefit cost	$ 1,071,984	$ 432,423
Assumptions used to determine net periodic benefit cost [Abstract]
Expected return on plan assets	7.50%	7.50%
Rate of compensation increase	0.00%	0.00%
Pension Benefit [Member] | Minimum [Member]
Assumptions used to determine net periodic benefit cost [Abstract]
Discount rate	4.20%	3.54%
Pension Benefit [Member] | Maximum [Member]
Assumptions used to determine net periodic benefit cost [Abstract]
Discount rate	4.22%	3.57%
Other Postretirement Benefit [Member]
Components of the net periodic benefit cost [Abstract]
Service cost	$ 33,287	$ 37,024
Interest cost	56,755	77,161
Expected return on plan assets	(28,033)	(55,650)
Amortization of prior service cost	(5,072)	(5,072)
Amortization of the net loss	(47,272)	(65,591)
Net periodic benefit cost	$ 9,665	$ (12,128)
Assumptions used to determine net periodic benefit cost [Abstract]
Discount rate	4.26%	3.60%
Expected return on plan assets	4.00%	4.00%
Supplemental Pension [Member]
Assumptions used to determine net periodic benefit cost [Abstract]
Discount rate	3.81%	3.10%