EMPLOYEE BENEFIT PLANS - Components of Net Period Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Retirement Benefits [Abstract]
Service cost	$ 2,833	$ 2,612	$ 3,110
Interest cost	11,583	10,850	11,642
Expected return on plan assets	(13,005)	(15,516)	(14,249)
Amortization of prior service credit	(489)	(514)	(496)
Amortization of net loss	2,250	2,990	3,845
Other	850	910	0
Net periodic cost (benefit)	$ 4,022	$ 1,332	$ 3,852