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FAIR VALUE - Asset Measured at Fair Value (Details) - USD ($) $ in Thousands | Sep. 27, 2025 | Dec. 28, 2024
--- | --- | ---
Money market funds | Cash and Cash Equivalents |  |
Fair Value |  |
Investments at fair value | $ 294,100 | $ 377,400
Money market funds | Restricted Investments |  |
Fair Value |  |
Investments at fair value | 2,000 | 400
Fixed income funds | Restricted Investments |  |
Fair Value |  |
Investments at fair value | 46,500 | 38,700
Equity securities | Other Assets |  |
Fair Value |  |
Investments at fair value | 30,500 | 26,000
Mutual funds, equity and alternative investments | Investments |  |
Fair Value |  |
Investments at fair value | 33,800 | 31,000
Money market and mutual funds | Other Assets |  |
Fair Value |  |
Investments at fair value | 200 | 200
Prices with Unobservable Inputs (Level 3) | Equity securities | Other Assets |  |
Fair Value |  |
Investments at fair value | 30,500 |
Ardellis Insurance Ltd. |  |
Fair Value |  |
Total Fair Value | 80,474 | 69,780
Estimate of Fair Value Measurement | Recurring |  |
Fair Value |  |
Investments at fair value | 407,092 | 473,685
Estimate of Fair Value Measurement | Recurring | Money market funds |  |
Fair Value |  |
Investments at fair value | 296,058 | 377,850
Estimate of Fair Value Measurement | Recurring | Fixed income funds |  |
Fair Value |  |
Investments at fair value | 46,202 | 38,348
Estimate of Fair Value Measurement | Recurring | Treasury securities |  |
Fair Value |  |
Investments at fair value | 345 | 344
Estimate of Fair Value Measurement | Recurring | Equity securities |  |
Fair Value |  |
Investments at fair value | 48,488 | 42,431
Estimate of Fair Value Measurement | Recurring | Alternative investments |  |
Fair Value |  |
Investments at fair value | 4,102 | 4,044
Estimate of Fair Value Measurement | Recurring | Mutual funds |  |
Fair Value |  |
Investments at fair value | 11,897 | 10,668
Estimate of Fair Value Measurement | Recurring | Domestic stock funds |  |
Fair Value |  |
Investments at fair value | 10,592 | 9,534
Estimate of Fair Value Measurement | Recurring | International stock funds |  |
Fair Value |  |
Investments at fair value | 796 | 641
Estimate of Fair Value Measurement | Recurring | Target funds |  |
Fair Value |  |
Investments at fair value | 11 | 10
Estimate of Fair Value Measurement | Recurring | Bond funds |  |
Fair Value |  |
Investments at fair value | 6 | 6
Estimate of Fair Value Measurement | Recurring | Alternative funds |  |
Fair Value |  |
Investments at fair value | 492 | 477
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) |  |
Fair Value |  |
Investments at fair value | 304,117 | 389,415
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Money market funds |  |
Fair Value |  |
Investments at fair value | 268,544 | 356,700
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Fixed income funds |  |
Fair Value |  |
Investments at fair value | 5,343 | 5,272
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Treasury securities |  |
Fair Value |  |
Investments at fair value | 345 | 344
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Equity securities |  |
Fair Value |  |
Investments at fair value | 17,988 | 16,431
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Mutual funds |  |
Fair Value |  |
Investments at fair value | 11,897 | 10,668
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Domestic stock funds |  |
Fair Value |  |
Investments at fair value | 10,592 | 9,534
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | International stock funds |  |
Fair Value |  |
Investments at fair value | 796 | 641
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Target funds |  |
Fair Value |  |
Investments at fair value | 11 | 10
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Bond funds |  |
Fair Value |  |
Investments at fair value | 6 | 6
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Alternative funds |  |
Fair Value |  |
Investments at fair value | 492 | 477
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) |  |
Fair Value |  |
Investments at fair value | 68,373 | 54,226
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Money market funds |  |
Fair Value |  |
Investments at fair value | 27,514 | 21,150
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Fixed income funds |  |
Fair Value |  |
Investments at fair value | 40,859 | 33,076
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) |  |
Fair Value |  |
Investments at fair value | 34,602 | 30,044
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) | Equity securities |  |
Fair Value |  |
Investments at fair value | 30,500 | 26,000
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) | Alternative investments |  |
Fair Value |  |
Investments at fair value | $ 4,102 | $ 4,044

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