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RESTRICTED CASH AND INVESTMENTS (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 28, 2025 | Sep. 29, 2024 | Sep. 28, 2025 | Sep. 29, 2024 | Dec. 29, 2024
Restricted Cash and Investments [Line Items] |  |  |  |  |
Cash collateral held by insurance carriers | $ 7,653 |  | $ 7,653 |  | $ 22,387
Cash and cash equivalents held in Trust | 22,805 |  | 22,805 |  | 15,406
Investments held in Trust | 73,331 |  | 73,331 |  | 99,506
Company owned life insurance policies | 45,464 |  | 45,464 |  | 41,846
Other restricted cash and cash equivalents | 438 |  | 438 |  | 771
Restricted cash and investments | 149,691 |  | 149,691 |  | 179,916
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 73,331 |  | 73,331 |  | 99,506
Gross unrealized gains | 564 |  | 564 |  | 212
Gross unrealized losses | (275) |  | (275) |  | (1,126)
Fair value | 73,620 |  | 73,620 |  | 98,592
Held-to-maturity securities, amortized cost [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 73,331 |  | 73,331 |  | 99,506
Held-to-maturity securities, fair value [Abstract] |  |  |  |  |
Fair value | 73,620 |  | 73,620 |  | 98,592
Unrealized gains (losses) on Investments | 2,176 | $ 2,099 | 3,617 | $ 4,821 |
Municipal debt securities |  |  |  |  |
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 7,891 |  | 7,891 |  | 22,490
Gross unrealized gains | 4 |  | 4 |  | 0
Gross unrealized losses | (4) |  | (4) |  | (135)
Fair value | 7,891 |  | 7,891 |  | 22,355
Held-to-maturity securities, amortized cost [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 7,891 |  | 7,891 |  | 22,490
Held-to-maturity securities, fair value [Abstract] |  |  |  |  |
Fair value | 7,891 |  | 7,891 |  | 22,355
Corporate debt securities |  |  |  |  |
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 55,405 |  | 55,405 |  | 64,313
Gross unrealized gains | 499 |  | 499 |  | 144
Gross unrealized losses | (259) |  | (259) |  | (945)
Fair value | 55,645 |  | 55,645 |  | 63,512
Held-to-maturity securities, amortized cost [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 55,405 |  | 55,405 |  | 64,313
Held-to-maturity securities, fair value [Abstract] |  |  |  |  |
Fair value | 55,645 |  | 55,645 |  | 63,512
Agency mortgage-backed securities |  |  |  |  |
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 5,064 |  | 5,064 |  | 11,703
Gross unrealized gains | 60 |  | 60 |  | 68
Gross unrealized losses | 0 |  | 0 |  | (17)
Fair value | 5,124 |  | 5,124 |  | 11,754
Held-to-maturity securities, amortized cost [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 5,064 |  | 5,064 |  | 11,703
Held-to-maturity securities, fair value [Abstract] |  |  |  |  |
Fair value | 5,124 |  | 5,124 |  | 11,754
U.S. government and agency securities |  |  |  |  |
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 4,971 |  | 4,971 |  | 1,000
Gross unrealized gains | 1 |  | 1 |  | 0
Gross unrealized losses | (12) |  | (12) |  | (29)
Fair value | 4,960 |  | 4,960 |  | 971
Held-to-maturity securities, amortized cost [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 4,971 |  | 4,971 |  | 1,000
Held-to-maturity securities, fair value [Abstract] |  |  |  |  |
Fair value | 4,960 |  | 4,960 |  | $ 971
Restricted cash and investments |  |  |  |  |
Held-to-maturity Securities, Reconciliation to Fair Value [Abstract] |  |  |  |  |
Amortized cost of held-to-maturity investments | 73,331 |  | 73,331 |  |
Fair value | 73,620 |  | 73,620 |  |
Held-to-maturity securities, amortized cost [Abstract] |  |  |  |  |
Due in one year or less | 40,590 |  | 40,590 |  |
Due after one year through five years | 32,741 |  | 32,741 |  |
Amortized cost of held-to-maturity investments | 73,331 |  | 73,331 |  |
Held-to-maturity securities, fair value [Abstract] |  |  |  |  |
Due in one year or less | 40,456 |  | 40,456 |  |
Due after one year through five years | 33,164 |  | 33,164 |  |
Fair value | $ 73,620 |  | $ 73,620 |  |

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