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FAIR VALUE - Asset Measured at Fair Value (Details) - USD ($) $ in Thousands | Sep. 28, 2024 | Dec. 30, 2023
--- | --- | ---
Fixed Income | Restricted Investments |  |
Fair Value |  |
Investments at fair value | $ 31,700 | $ 24,400
Money market funds | Cash and Cash Equivalents |  |
Fair Value |  |
Investments at fair value | 413,600 | 498,500
Money market funds | Restricted Investments |  |
Fair Value |  |
Investments at fair value | 900 | 400
Mutual funds, equity and alternative investments | Investments |  |
Fair Value |  |
Investments at fair value | 38,900 | 34,800
Mutual funds, equity and alternative investments | Other Assets |  |
Fair Value |  |
Investments at fair value | 22,000 | 10,500
Money market and mutual funds | Other Assets |  |
Fair Value |  |
Investments at fair value | 100 | 100
Prices with Unobservable Inputs (Level 3) | Equity | Other Assets |  |
Fair Value |  |
Investments at fair value | 22,000 |
Ardellis Insurance Ltd. |  |
Fair Value |  |
Total Fair Value | 70,637 | 59,177
Estimate of Fair Value Measurement | Recurring |  |
Fair Value |  |
Investments at fair value | 507,213 | 568,655
Estimate of Fair Value Measurement | Recurring | Fixed Income |  |
Fair Value |  |
Investments at fair value | 31,358 | 24,088
Estimate of Fair Value Measurement | Recurring | Money market funds |  |
Fair Value |  |
Investments at fair value | 414,523 | 498,933
Estimate of Fair Value Measurement | Recurring | Treasury Securities |  |
Fair Value |  |
Investments at fair value | 344 | 344
Estimate of Fair Value Measurement | Recurring | Equity |  |
Fair Value |  |
Investments at fair value | 38,893 | 26,911
Estimate of Fair Value Measurement | Recurring | Alternative Investments |  |
Fair Value |  |
Investments at fair value | 4,033 | 4,052
Estimate of Fair Value Measurement | Recurring | Mutual funds |  |
Fair Value |  |
Investments at fair value | 18,062 | 14,327
Estimate of Fair Value Measurement | Recurring | Domestic stock |  |
Fair Value |  |
Investments at fair value | 16,860 | 13,330
Estimate of Fair Value Measurement | Recurring | International stock funds |  |
Fair Value |  |
Investments at fair value | 704 | 509
Estimate of Fair Value Measurement | Recurring | Target funds |  |
Fair Value |  |
Investments at fair value | 10 | 9
Estimate of Fair Value Measurement | Recurring | Bond funds |  |
Fair Value |  |
Investments at fair value | 6 | 5
Estimate of Fair Value Measurement | Recurring | Alternative funds |  |
Fair Value |  |
Investments at fair value | 482 | 474
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) |  |
Fair Value |  |
Investments at fair value | 439,098 | 528,994
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Fixed Income |  |
Fair Value |  |
Investments at fair value | 5,324 | 5,112
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Money market funds |  |
Fair Value |  |
Investments at fair value | 398,475 | 492,800
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Treasury Securities |  |
Fair Value |  |
Investments at fair value | 344 | 344
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Equity |  |
Fair Value |  |
Investments at fair value | 16,893 | 16,411
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Mutual funds |  |
Fair Value |  |
Investments at fair value | 18,062 | 14,327
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Domestic stock |  |
Fair Value |  |
Investments at fair value | 16,860 | 13,330
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | International stock funds |  |
Fair Value |  |
Investments at fair value | 704 | 509
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Target funds |  |
Fair Value |  |
Investments at fair value | 10 | 9
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Bond funds |  |
Fair Value |  |
Investments at fair value | 6 | 5
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Alternative funds |  |
Fair Value |  |
Investments at fair value | 482 | 474
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) |  |
Fair Value |  |
Investments at fair value | 42,082 | 25,109
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Fixed Income |  |
Fair Value |  |
Investments at fair value | 26,034 | 18,976
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Money market funds |  |
Fair Value |  |
Investments at fair value | 16,048 | 6,133
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) |  |
Fair Value |  |
Investments at fair value | 26,033 | 14,552
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) | Equity |  |
Fair Value |  |
Investments at fair value | 22,000 | 10,500
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) | Alternative Investments |  |
Fair Value |  |
Investments at fair value | $ 4,033 | $ 4,052

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