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DEFINED BENEFIT RETIREMENT PLAN - Additional Information (Details) £ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 30, 2023 USD ($) | Dec. 30, 2023 GBP (£) | Dec. 31, 2022 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |
Limit on employer contributions per annum | $ 16,700 | £ 13,100 |
Administrative costs of the Plan | 1,700 | £ 1,300 |
Plan assets | 493,167 |  | $ 459,927
Fair Value Measured at Net Asset Value Per Share [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 486,090 |  | 454,011
Mutual Fund [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Target allocation percentage | 50.00% |  |
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Estimate of Fair Value Measurement [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 7,077 |  | 5,916
Defined Benefit Plan, Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 7,077 |  | 5,916
Defined Benefit Plan, Equity Securities [Member] | Estimate of Fair Value Measurement [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 72,548 |  | 55,379
ICAP MTF - GILTS [Member] | Estimate of Fair Value Measurement [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 216,405 |  | 206,555
Corporate Debt Securities [Member] | Estimate of Fair Value Measurement [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 74,440 |  | 63,953
Private Equity Funds [Member] | Estimate of Fair Value Measurement [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | $ 122,697 |  | $ 128,124

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