DEFINED BENEFIT RETIREMENT PLAN (Details) £ in Thousands, $ in Thousands	12 Months Ended
	Dec. 27, 2025 USD ($) employee $ / £	Dec. 27, 2025 GBP (£) employee	Dec. 28, 2024 USD ($) $ / £	Dec. 30, 2023 USD ($)
EMPLOYEE RETIREMENT SAVINGS PLAN
Pension retirement benefits to qualified employees as percent of final salary per year of service	1.67%	1.67%
Eligibility age	65 years	65 years
Active members of defined benefit retirement income plan | employee	0	0
Foreign currency exchange rate used to translate the net pension liability | $ / £	1.349		1.257
Projected Benefit Obligation
Beginning balance	$ 414,657		$ 477,763
Interest cost	$ 22,243		$ 21,136
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Nonoperating	Interest Expense, Nonoperating	Interest Expense, Nonoperating
Benefits paid	$ (23,955)		$ (21,264)
Actuarial (gain) loss	1,579		(58,156)
Currency translation gain (loss)	30,298		(4,822)
Ending balance	444,822		414,657
Plan Assets
Fair value beginning balance	461,177		493,167
Employer contributions	3,159		19,599
Actual return on plan assets	10,661		(24,723)
Benefits paid	(23,955)		(21,264)
Currency translation gain (loss)	33,446		(5,602)
Fair value ending balance	484,488		461,177
Funded Status
Funded status	39,666		46,520	$ 15,404
Accumulated other comprehensive income (loss)
Balance at the beginning of the period	(75,352)		(89,151)
Actuarial gain (loss)	(13,952)		10,888
Amortization of prior service costs	526		512
Amortization of net actuarial loss	1,316		1,537
Currency translation gain (loss)	(5,809)		862
Balance at the end of the period	$ (93,271)		$ (75,352)
Weighted average actuarial assumptions used to determine the benefit obligation
Discount rate for benefit obligations	5.50%		5.50%	4.50%
Consumer Price Index ("CPI") inflation	2.15%		2.40%
Retail Price Index ("RPI") inflation	2.85%		3.20%
Cost (Benefit)
Interest cost	$ 22,243		$ 21,136
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Interest Expense, Nonoperating	Interest Expense, Nonoperating	Interest Expense, Nonoperating
Expected return on plan assets	$ (23,033)		$ (22,545)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Amortization of prior service costs	$ 526		$ 512
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Amortization of net actuarial loss	$ 1,316		$ 1,537
Net periodic pension cost	$ 1,052		$ 640
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income [Extensible Enumeration]	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Weighted average actuarial assumptions used to determine pension cost
Discount rate for benefit obligations	5.50%	5.50%	4.50%
Discount rate for interest cost	5.25%	5.25%	4.50%
Expected return on plan assets	5.50%	5.50%	5.05%
CPI Inflation	2.40%	2.40%	2.25%
RPI Inflation	3.20%	3.20%	3.05%
Limit on employer contributions per annum	$ 5,200	£ 4,000
Administrative costs of the Plan	3,200	£ 2,400
Expected pension benefit payments
2026	25,229
2027	26,039
2028	26,848
2029	27,658
2030	28,468
2031 - 2035	$ 155,829