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RESTRICTED CASH AND INVESTMENTS (Tables) | 3 Months Ended
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Mar. 25, 2016
Restricted Cash and Investments [Abstract] |
Schedule of restricted cash and investments | The following is a summary of our restricted cash and investments (in thousands):
| March 25, 2016 |  | December 25, 2015
Cash collateral held by insurance carriers | $ | 26,532 |  |  | $ | 23,634 |
Cash and cash equivalents held in Trust | 28,005 |  |  | 26,046 |
Investments held in Trust | 134,273 |  |  | 126,788 |
Other (1) | 13,874 |  |  | 11,944 |
Total restricted cash and investments | $ | 202,684 |  |  | $ | 188,412 |
(1) | Primarily consists of deferred compensation plan accounts, which are comprised of mutual funds classified as available-for-sale securities.
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 25, 2016
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss |  | Fair Value
Municipal debt securities | $ | 65,967 |  |  | $ | 1,702 |  |  | $ | — |  |  | $ | 67,669 |
Corporate debt securities | 60,570 |  |  | 842 |  |  | (57 | ) |  | 61,355 |
Agency mortgage-backed securities | 7,736 |  |  | 85 |  |  | (2 | ) |  | 7,819 |
| $ | 134,273 |  |  | $ | 2,629 |  |  | $ | (59 | ) |  | $ | 136,843 |
| December 25, 2015
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss |  | Fair Value
Municipal debt securities | $ | 67,948 |  |  | $ | 1,345 |  |  | $ | (4 | ) |  | $ | 69,289 |
Corporate debt securities | 50,462 |  |  | 226 |  |  | (152 | ) |  | 50,536 |
Agency mortgage-backed securities | 8,378 |  |  | 73 |  |  | (31 | ) |  | 8,420 |
| $ | 126,788 |  |  | $ | 1,644 |  |  | $ | (187 | ) |  | $ | 128,245 |
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 25, 2016
| Amortized Cost |  | Fair Value
Due in one year or less | $ | 10,863 |  |  | $ | 10,897 |
Due after one year through five years | 61,575 |  |  | 62,277 |
Due after five years through ten years | 61,835 |  |  | 63,669 |
| $ | 134,273 |  |  | $ | 136,843 |

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