PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Economic Assumptions and Impact of Change in Discount Rate on Benefit Obligation (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Dec. 30, 2018
Assumptions used to measure net pension and other postretirement cost:
Increase in Discount Rate of 0.25% - Impact on defined benefit obligation for pension benefits	$ (4,218)
Decrease in Discount Rate of 0.25% - Impact on defined benefit obligation for pension benefits	$ 4,430
Pension Benefits
Assumptions used to measure benefit obligation at end of period:
Discount rate	3.23%		4.40%
Assumptions used to measure net pension and other postretirement cost:
Discount rate	4.40%	3.69%
Expected return on plan assets	5.50%	5.50%
Other Benefits
Assumptions used to measure benefit obligation at end of period:
Discount rate	2.81%		4.07%
Assumptions used to measure net pension and other postretirement cost:
Discount rate	4.07%	3.39%