RETIREMENT BENEFIT PLANS, Defined Contribution Plan (Details) - USD ($)	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Defined Benefit Plan Disclosure [Line Items]
Total contributions made for the period	$ 1,206,996	$ 611,461	$ 232,399
Regular Matching Contributions [Member]
Defined Benefit Plan Disclosure [Line Items]
Total contributions made for the period	465,671	328,144	232,399
Transitional Credit Contributions [Member]
Defined Benefit Plan Disclosure [Line Items]
Total contributions made for the period	385,578	231,847	0
Non-discretionary Contributions [Member]
Defined Benefit Plan Disclosure [Line Items]
Total contributions made for the period	$ 355,747	$ 51,470	$ 0
Plan 401 K Plan Amendment [Member]
Defined Benefit Plan Disclosure [Line Items]
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]
Defined Benefit Plan Disclosure [Line Items]
Total contributions made for the period	$ 502,618	$ 307,568
Non-Union U.S. Employees [Member] | Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
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]
Defined Benefit Plan Disclosure [Line Items]
Non-discretionary contribution percentage for certain employees who were eligible to participate in the salaried plan		4.00%