RETIREMENT BENEFIT PLANS, Defined Contribution Plan (Details) - USD ($)	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Contribution Plan [Abstract]
Total contributions for the period	$ 1,484,664	$ 1,478,481
Regular Matching Contributions [Member]
Contribution Plan [Abstract]
Total contributions for the period	540,693	551,046
Transitional Credit Contributions [Member]
Contribution Plan [Abstract]
Total contributions for the period	305,226	349,062
Non-discretionary Contributions [Member]
Contribution Plan [Abstract]
Total contributions for the period	$ 638,745	578,373
Plan 401 K Plan Amendment [Member]
Contribution Plan [Abstract]
Percentage of voluntary contributions allowed to participants, maximum	100.00%
Employer matching contribution percentage	50.00%
Increase in employer matching contribution on first of total employee contributions, percentage	6.00%
Non-discretionary contribution percentage for employees who were not eligible to participate in the salaried plan	3.00%
Non-Union U.S. Employees [Member]
Contribution Plan [Abstract]
Total contributions for the period	$ 550,286	$ 565,748
Non-Union U.S. Employees [Member] | Minimum [Member]
Contribution Plan [Abstract]
Non-discretionary contribution percentage for certain employees who were eligible to participate in the salaried plan	0.00%
Non-Union U.S. Employees [Member] | Maximum [Member]
Contribution Plan [Abstract]
Non-discretionary contribution percentage for certain employees who were eligible to participate in the salaried plan	4.00%