EMPLOYEE BENEFIT PLANS - Fair Value of Company's Pension Plan Assets by Asset Category (Details) - USD ($) $ in Thousands	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 335,631	$ 324,752	$ 357,181
Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12,691	21,629
Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	60,872	63,465
Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	140,082	99,188
Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	76,340	72,207
Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	45,646	68,263
Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	15,213	36,322
Level 1 | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	8,142	20,163
Level 1 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	8,633
Level 1 | Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 1 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	7,071	7,018
Level 1 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	508
Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	319,340	287,114
Level 2 | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	4,549	1,466
Level 2 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	60,872	54,832
Level 2 | Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	140,082	99,188
Level 2 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	69,269	65,189
Level 2 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	44,568	66,439
Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,078	1,316
Level 3 | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Mutual Funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Level 3 | Other
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,078	$ 1,316