PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Net Defined Benefit Pension and Other Postretirement Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 25, 2023	Jun. 26, 2022	Jun. 25, 2023	Jun. 26, 2022
Pension Benefits
Change in projected benefit obligation:
Interest cost	$ 2,783	$ 1,716	$ 5,097	$ 3,224
Estimated return on plan assets	(2,531)	(2,611)	(4,753)	(5,014)
Settlement loss	0	1,167	0	1,167
Expenses paid from assets	52	73	146	188
Amortization of net loss	261	341	440	568
Amortization of past service cost	4	4	8	9
Net costs	569	690	938	142
Other Benefits
Change in projected benefit obligation:
Interest cost	13	6	22	10
Estimated return on plan assets	0	0	0	0
Settlement loss	0	0	0	0
Expenses paid from assets	0	0	0	0
Amortization of net loss	0	0	0	0
Amortization of past service cost	0	0	0	0
Net costs	$ 13	$ 6	$ 22	$ 10