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RESTRICTED CASH AND INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2023
Restricted Cash and Investments [Abstract] |
Schedule of Restricted Cash and Investments | The following is a summary of the carrying value of our restricted cash and investments:
(in thousands) | December 31, 2023 | December 25, 2022
Cash collateral held by insurance carriers | $ | 23,598 |  | $ | 29,567 |
Cash and cash equivalents held in Trust | 12,703 |  | 30,857 |
Investments held in Trust | 122,659 |  | 123,678 |
Company-owned life insurance policies | 32,905 |  | 26,479 |
Other restricted cash and cash equivalents | 1,120 |  | 3,153 |
Total restricted cash and investments | $ | 192,985 |  | $ | 213,734 |
Schedule of Held-to-Maturity Investments | The amortized cost and estimated fair value of our held-to-maturity investments held in Trust, aggregated by investment category as of December 31, 2023 and December 25, 2022, were as follows:
| December 31, 2023
(in thousands) | Amortized cost | Gross unrealized gains | Gross unrealized losses | Fair value
Municipal debt securities | $ | 32,042 |  | $ | 4 |  | $ | (242) |  | $ | 31,804 |
Corporate debt securities | 76,578 |  | 333 |  | (1,999) |  | 74,912 |
Agency mortgage-backed securities | 13,039 |  | 196 |  | — |  | 13,235 |
U.S. government and agency securities | 1,000 |  | — |  | (38) |  | 962 |
Total held-to-maturity investments | $ | 122,659 |  | $ | 533 |  | $ | (2,279) |  | $ | 120,913 |
| December 25, 2022
(in thousands) | Amortized cost | Gross unrealized gains | Gross unrealized losses | Fair value
Municipal debt securities | $ | 42,892 |  | $ | 2 |  | $ | (463) |  | $ | 42,431 |
Corporate debt securities | 79,736 |  | 4 |  | (3,643) |  | 76,097 |
Agency mortgage-backed securities | 50 |  | — |  | (2) |  | 48 |
U.S. government and agency securities | 1,000 |  | — |  | (51) |  | 949 |
Total held-to-maturity investments | $ | 123,678 |  | $ | 6 |  | $ | (4,159) |  | $ | 119,525 |
Schedule of Held-to-Maturity Investments by Contractual Maturity | The amortized cost and fair value by contractual maturity of our held-to-maturity investments are as follows:
| December 31, 2023
(in thousands) | Amortized cost | Fair value
Due in one year or less | $ | 27,414 |  | $ | 27,118 |
Due after one year through five years | 82,847 |  | 81,146 |
Due after five years through ten years | 5,818 |  | 5,922 |
Due after ten years | 6,580 |  | 6,727 |
Total held-to-maturity investments | $ | 122,659 |  | $ | 120,913 |
Schedule of Unrealized Gain Loss on Investments | The unrealized gains and losses related to investments still held at December 31, 2023, December 25, 2022 and December 26, 2021, included in SG&A expense on our Consolidated Statements of Operations and Comprehensive Income (Loss), were as follows:
(in thousands) | 2023 | 2022 | 2021
Unrealized gains (losses) | $ | 4,383 |  | $ | (5,841) |  | $ | 1,061 |

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