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RESTRICTED CASH AND INVESTMENTS (Tables) | 9 Months Ended
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Sep. 24, 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) | September 24, 2023 | December 25, 2022
Cash collateral held by insurance carriers | $ | 24,727 |  | $ | 29,567 |
Cash and cash equivalents held in Trust | 17,842 |  | 30,857 |
Investments held in Trust | 125,379 |  | 123,678 |
Company-owned life insurance policies | 30,005 |  | 26,479 |
Other restricted cash and cash equivalents | 876 |  | 3,153 |
Total restricted cash and investments | $ | 198,829 |  | $ | 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 September 24, 2023 and December 25, 2022, were as follows:
| September 24, 2023
(in thousands) | Amortized cost | Gross unrealized gains | Gross unrealized losses | Fair value
Municipal debt securities | $ | 34,783 |  | $ | — |  | $ | (717) |  | $ | 34,066 |
Corporate debt securities | 80,759 |  | — |  | (3,458) |  | 77,301 |
Agency mortgage-backed securities | 8,839 |  | — |  | (88) |  | 8,751 |
U.S. government and agency securities | 998 |  | — |  | (66) |  | 932 |
Total held-to-maturity investments | $ | 125,379 |  | $ | — |  | $ | (4,329) |  | $ | 121,050 |
| 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:
| September 24, 2023
(in thousands) | Amortized cost | Fair value
Due in one year or less | $ | 32,068 |  | $ | 31,617 |
Due after one year through five years | 85,528 |  | 81,848 |
Due after five years through ten years | 7,783 |  | 7,585 |
Total held-to-maturity investments | $ | 125,379 |  | $ | 121,050 |
Schedule of unrealized gain (loss) on equity investments | Unrealized gains and losses related to investments still held at September 24, 2023 and September 25, 2022, which are included in SG&A expense on our Consolidated Statements of Operations and Comprehensive Income (Loss), were as follows:
| Thirteen weeks ended |  | Thirty-nine weeks ended
(in thousands) | September 24, 2023 | September 25, 2022 |  | September 24, 2023 | September 25, 2022
Unrealized gains (losses) | $ | (493) |  | $ | (1,516) |  |  | $ | 1,482 |  | $ | (7,076) |

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