DEFINED BENEFIT RETIREMENT PLAN - Additional Information (Details) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 27, 2025 USD ($)	Dec. 28, 2024 USD ($)	Mar. 26, 2024 GBP (£)	Mar. 26, 2024 USD ($)
DEFINED BENEFIT RETIREMENT PLAN
Weighted average maturity period of corporate bond portfolio	12 years
Plan assets	$ 484,488	$ 461,177
Estimated fair value
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	104,291	91,783
Level 1 | Estimated fair value
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	15,920	8,927
Level 3 | Estimated fair value
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	88,371	82,856
Plan assets at NAV
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	380,197	369,394
Temporary cash investments | Estimated fair value
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	15,920	8,927
Temporary cash investments | Level 1 | Estimated fair value
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	15,920	8,927
Bulk annuity insurance policy
DEFINED BENEFIT RETIREMENT PLAN
Percentage of total plan participants			15.00%	15.00%
Plan assets			£ 70,865	$ 90,800
Bulk annuity insurance policy | Estimated fair value
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	88,371	82,856
Bulk annuity insurance policy | Level 3
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	88,371	82,856
Bulk annuity insurance policy | Level 3 | Estimated fair value
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	88,371	82,856
Leveraged inflation-linked gilt funds | Plan assets at NAV
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	342,150	146,601
Corporate bonds | Plan assets at NAV
DEFINED BENEFIT RETIREMENT PLAN
Plan assets	$ 38,047	33,318
Corporate stock | Plan assets at NAV
DEFINED BENEFIT RETIREMENT PLAN
Plan assets		73,426
Secured income asset funds | Plan assets at NAV
DEFINED BENEFIT RETIREMENT PLAN
Plan assets		$ 116,049