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RESTRICTED CASH AND INVESTMENTS (Tables) | 3 Months Ended
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Mar. 27, 2015
Restricted Cash and Investments [Abstract] |
Schedule of restricted cash and investments | The following is a summary our restricted cash and investments (in thousands):
| March 27, 2015 |  | December 26, 2014
Cash collateral held by insurance carriers | $ | 22,497 |  |  | $ | 22,639 |
Cash and cash equivalents held in Trust | 51,066 |  |  | 43,856 |
Investments held in Trust | 85,351 |  |  | 90,095 |
Cash collateral backing letters of credit | 1,864 |  |  | 1,864 |
Other (1) | 11,261 |  |  | 9,972 |
Total restricted cash and investments | $ | 172,039 |  |  | $ | 168,426 |
(1) | Primarily consists of deferred compensation plan accounts, which are comprised of mutual funds.
Schedule of held-to-maturity investments | The following tables present fair value disclosures for our held-to-maturity investments, which are carried at amortized cost (in thousands):
| March 27, 2015
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss |  | Fair Value
Municipal debt securities | $ | 49,353 |  |  | $ | 1,002 |  |  | $ | (22 | ) |  | $ | 50,333 |
Corporate debt securities | 26,646 |  |  | 469 |  |  | (22 | ) |  | 27,093 |
Asset-backed securities | 9,352 |  |  | 167 |  |  | — |  |  | 9,519 |
| $ | 85,351 |  |  | $ | 1,638 |  |  | $ | (44 | ) |  | $ | 86,945 |
| December 26, 2014
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss |  | Fair Value
Municipal debt securities | $ | 52,406 |  |  | $ | 882 |  |  | $ | (92 | ) |  | $ | 53,196 |
Corporate debt securities | 27,715 |  |  | 179 |  |  | (144 | ) |  | 27,750 |
Asset-backed securities | 9,974 |  |  | 157 |  |  | (11 | ) |  | 10,120 |
| $ | 90,095 |  |  | $ | 1,218 |  |  | $ | (247 | ) |  | $ | 91,066 |
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 (in thousands):
| March 27, 2015
| Amortized Cost |  | Fair Value
Due in one year or less | $ | 8,649 |  |  | $ | 8,691 |
Due after one year through five years | 40,368 |  |  | 40,906 |
Due after five years through ten years | 36,334 |  |  | 37,348 |
| $ | 85,351 |  |  | $ | 86,945 |

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