EMPLOYEE BENEFIT PLANS - Components of Net Period Benefit Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Retirement Benefits [Abstract]
Service cost	$ 3,455	$ 3,609	$ 2,833
Interest cost	5,492	8,849	11,583
Expected return on plan assets	(8,058)	(11,348)	(13,005)
Amortization of prior service credit	(531)	(489)	(489)
Amortization of net loss	4,528	6,239	2,250
Other	0	417	850
Net periodic benefit cost	4,886	7,277	4,022
Settlement	(2,320)	12,385	0
Total benefit cost	$ 2,566	$ 19,662	$ 4,022