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RESTRICTED CASH AND INVESTMENTS (Tables) | 9 Months Ended
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Sep. 23, 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):
| September 23, 2016 |  | December 25, 2015
Cash collateral held by insurance carriers | $ | 27,172 |  |  | $ | 23,634 |
Cash and cash equivalents held in Trust | 21,101 |  |  | 26,046 |
Investments held in Trust | 148,811 |  |  | 126,788 |
Other (1) | 15,884 |  |  | 11,944 |
Total restricted cash and investments | $ | 212,968 |  |  | $ | 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):
| September 23, 2016
| Amortized Cost |  | Gross Unrealized Gain |  | Gross Unrealized Loss |  | Fair Value
Municipal debt securities | $ | 72,776 |  |  | $ | 2,186 |  |  | $ | (37 | ) |  | $ | 74,925 |
Corporate debt securities | 69,552 |  |  | 1,510 |  |  | (13 | ) |  | 71,049 |
Agency mortgage-backed securities | 6,483 |  |  | 107 |  |  | (1 | ) |  | 6,589 |
| $ | 148,811 |  |  | $ | 3,803 |  |  | $ | (51 | ) |  | $ | 152,563 |
| 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):
| September 23, 2016
| Amortized Cost |  | Fair Value
Due in one year or less | $ | 14,051 |  |  | $ | 14,092 |
Due after one year through five years | 76,590 |  |  | 77,854 |
Due after five years through ten years | 58,170 |  |  | 60,617 |
| $ | 148,811 |  |  | $ | 152,563 |

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