DEFINED BENEFIT RETIREMENT PLAN - Changes in Level 3 plan assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2025	Dec. 28, 2024
DEFINED BENEFIT RETIREMENT PLAN
Beginning Balance	$ 461,177
Ending balance	484,488	$ 461,177
Bulk annuity insurance policy | Level 3
DEFINED BENEFIT RETIREMENT PLAN
Beginning Balance	82,856
Net Realized and Unrealized Gains (Losses)	4,607	(3,074)
Net Purchases, Issuances, and Settlements	(5,133)	87,445
Currency Impact	6,041	(1,515)
Ending balance	$ 88,371	$ 82,856