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FAIR VALUE - Asset Measured at Fair Value (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 27, 2025 | Dec. 27, 2025 | Dec. 28, 2024
Fair Value |  |  |
Impairment of investments | $ 6,500 | $ 6,500 |
Money market funds | Cash and cash equivalents |  |  |
Fair Value |  |  |
Investments at fair value | 207,900 | 207,900 | $ 377,400
Money market funds | Restricted investments |  |  |
Fair Value |  |  |
Investments at fair value | 600 | 600 | 400
Fixed income funds | Restricted investments |  |  |
Fair Value |  |  |
Investments at fair value | 49,900 | 49,900 | 38,700
Equity securities | Other assets |  |  |
Fair Value |  |  |
Investments at fair value | 28,000 | 28,000 | 26,000
Mutual funds, equity and alternative investments | Investments |  |  |
Fair Value |  |  |
Investments at fair value | 34,300 | 34,300 | 31,000
Money market and mutual funds | Other assets |  |  |
Fair Value |  |  |
Investments at fair value | 200 | 200 | 200
Prices with Unobservable Inputs (Level 3) | Equity securities | Other assets |  |  |
Fair Value |  |  |
Investments at fair value | 28,000 | 28,000 | 26,000
Ardellis Insurance Ltd. |  |  |
Fair Value |  |  |
Total fair value | 84,271 | 84,271 | 69,780
Estimate of Fair Value Measurement | Recurring |  |  |
Fair Value |  |  |
Investments at fair value | 320,875 | 320,875 | 473,685
Estimate of Fair Value Measurement | Recurring | Money market funds |  |  |
Fair Value |  |  |
Investments at fair value | 208,501 | 208,501 | 377,850
Estimate of Fair Value Measurement | Recurring | Fixed income funds |  |  |
Fair Value |  |  |
Investments at fair value | 49,592 | 49,592 | 38,348
Estimate of Fair Value Measurement | Recurring | Treasury securities |  |  |
Fair Value |  |  |
Investments at fair value | 345 | 345 | 344
Estimate of Fair Value Measurement | Recurring | Equity securities |  |  |
Fair Value |  |  |
Investments at fair value | 46,492 | 46,492 | 42,431
Estimate of Fair Value Measurement | Recurring | Alternative investments |  |  |
Fair Value |  |  |
Investments at fair value | 4,186 | 4,186 | 4,044
Estimate of Fair Value Measurement | Recurring | Mutual funds |  |  |
Fair Value |  |  |
Investments at fair value | 11,759 | 11,759 | 10,668
Estimate of Fair Value Measurement | Recurring | Domestic stock funds |  |  |
Fair Value |  |  |
Investments at fair value | 10,436 | 10,436 | 9,534
Estimate of Fair Value Measurement | Recurring | International stock funds |  |  |
Fair Value |  |  |
Investments at fair value | 816 | 816 | 641
Estimate of Fair Value Measurement | Recurring | Target funds |  |  |
Fair Value |  |  |
Investments at fair value | 11 | 11 | 10
Estimate of Fair Value Measurement | Recurring | Bond funds |  |  |
Fair Value |  |  |
Investments at fair value | 6 | 6 | 6
Estimate of Fair Value Measurement | Recurring | Alternative funds |  |  |
Fair Value |  |  |
Investments at fair value | 490 | 490 | 477
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) |  |  |
Fair Value |  |  |
Investments at fair value | 218,012 | 218,012 | 389,415
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Money market funds |  |  |
Fair Value |  |  |
Investments at fair value | 182,051 | 182,051 | 356,700
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Fixed income funds |  |  |
Fair Value |  |  |
Investments at fair value | 5,365 | 5,365 | 5,272
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Treasury securities |  |  |
Fair Value |  |  |
Investments at fair value | 345 | 345 | 344
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Equity securities |  |  |
Fair Value |  |  |
Investments at fair value | 18,492 | 18,492 | 16,431
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Mutual funds |  |  |
Fair Value |  |  |
Investments at fair value | 11,759 | 11,759 | 10,668
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Domestic stock funds |  |  |
Fair Value |  |  |
Investments at fair value | 10,436 | 10,436 | 9,534
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | International stock funds |  |  |
Fair Value |  |  |
Investments at fair value | 816 | 816 | 641
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Target funds |  |  |
Fair Value |  |  |
Investments at fair value | 11 | 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 | 6
Estimate of Fair Value Measurement | Recurring | Quoted Prices in Active Markets (Level 1) | Alternative funds |  |  |
Fair Value |  |  |
Investments at fair value | 490 | 490 | 477
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) |  |  |
Fair Value |  |  |
Investments at fair value | 70,677 | 70,677 | 54,226
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Money market funds |  |  |
Fair Value |  |  |
Investments at fair value | 26,450 | 26,450 | 21,150
Estimate of Fair Value Measurement | Recurring | Prices with Other Observable Inputs (Level 2) | Fixed income funds |  |  |
Fair Value |  |  |
Investments at fair value | 44,227 | 44,227 | 33,076
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) |  |  |
Fair Value |  |  |
Investments at fair value | 32,186 | 32,186 | 30,044
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) | Equity securities |  |  |
Fair Value |  |  |
Investments at fair value | 28,000 | 28,000 | 26,000
Estimate of Fair Value Measurement | Recurring | Prices with Unobservable Inputs (Level 3) | Alternative investments |  |  |
Fair Value |  |  |
Investments at fair value | $ 4,186 | $ 4,186 | $ 4,044

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