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RESTRICTED CASH AND INVESTMENTS (Tables) | 9 Months Ended
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Oct. 01, 2017
Restricted Cash and Investments [Abstract] |
Schedule of restricted cash and investments | The following is a summary of our restricted cash and investments:
(in thousands) | October 1, 2017 | January 1, 2017
Cash collateral held by insurance carriers | $ | 29,122 |  | $ | 34,910 |
Cash and cash equivalents held in Trust | 30,666 |  | 32,841 |
Investments held in Trust | 163,270 |  | 146,517 |
Other (1) | 21,115 |  | 16,925 |
Total restricted cash and investments | $ | 244,173 |  | $ | 231,193 |
(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:
| October 1, 2017
(in thousands) | Amortized Cost | Gross Unrealized Gain | Gross Unrealized Loss | Fair Value
Municipal debt securities | $ | 76,373 |  | $ | 1,561 |  | $ | (233 | ) | $ | 77,701 |
Corporate debt securities | 81,395 |  | 572 |  | (166 | ) | 81,801 |
Agency mortgage-backed securities | 4,502 |  | 36 |  | (13 | ) | 4,525 |
U.S. government and agency securities | 1,000 |  | 26 |  | — |  | 1,026 |
| $ | 163,270 |  | $ | 2,195 |  | $ | (412 | ) | $ | 165,053 |
| January 1, 2017
(in thousands) | Amortized Cost | Gross Unrealized Gain | Gross Unrealized Loss | Fair Value
Municipal debt securities | $ | 71,618 |  | $ | 443 |  | $ | (865 | ) | $ | 71,196 |
Corporate debt securities | 68,934 |  | 212 |  | (352 | ) | 68,794 |
Agency mortgage-backed securities | 5,965 |  | 30 |  | (32 | ) | 5,963 |
| $ | 146,517 |  | $ | 685 |  | $ | (1,249 | ) | $ | 145,953 |
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:
| October 1, 2017
(in thousands) | Amortized Cost | Fair Value
Due in one year or less | $ | 16,796 |  | $ | 16,816 |
Due after one year through five years | 83,156 |  | 83,764 |
Due after five years through ten years | 63,318 |  | 64,473 |
| $ | 163,270 |  | $ | 165,053 |

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