EMPLOYEE BENEFIT PLANS - Reconciliation of Benefit Obligations and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Change in projected benefit obligations:
Benefit obligation at beginning of year	$ 367,468	$ 447,409
Service cost	3,455	3,609	$ 2,833
Interest cost	5,492	8,849	11,583
Other	0	429
Benefit payments	(7,564)	(8,913)
Settlements	(82)	(101,979)
Transfer out due to divestiture	(11,956)	0
Actuarial loss	18,107	9,816
Administrative expenses paid	0	(808)
Effect of foreign exchange	(2,321)	9,056
Benefit obligation at end of year	372,599	367,468	447,409
Change in fair value of plan assets:
Fair value of plan assets at beginning of year	324,752	357,181
Actual return on plan assets	24,151	36,551
Employer contributions	11,221	34,092
Settlements	(82)	(101,979)
Transfer out due to divestiture	(15,918)	0
Benefit payments	(7,564)	(8,913)
Administrative expenses paid	0	(808)
Effect of foreign exchange	(929)	8,628
Fair value of plan assets at end of year	335,631	324,752	$ 357,181
Net balance sheet liability	36,968	42,716
Amounts recognized in balance sheet:
Noncurrent assets	39,621	31,916
Current liabilities	1,876	1,713
Noncurrent liabilities	$ 74,713	$ 72,919