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FAIR VALUE MEASUREMENT (Details) - USD ($) $ in Thousands | Jun. 26, 2015 | Dec. 26, 2014
--- | --- | ---
Fair Value Measurement [Line Items] |  |  |
Other restricted assets | [1] | $ 11,849 | $ 9,972
Restricted investments classified as held-to-maturity |  | 95,198 | 91,066
Certificate of deposits |  |  |
Fair Value Measurement [Line Items] |  |  |
Marketable securities classified as available-for-sale | [2] |  | 1,500
Carrying Value |  |  |
Fair Value Measurement [Line Items] |  |  |
Cash and cash equivalents | [3] | 21,288 | 19,666
Carrying Value | Restricted Assets |  |  |
Fair Value Measurement [Line Items] |  |  |
Restricted cash and cash equivalents | [3] | 58,226 | 68,359
Other restricted assets | [4] | 11,849 | 9,972
Restricted investments classified as held-to-maturity |  | 94,598 | 90,095
Total Fair Value |  |  |
Fair Value Measurement [Line Items] |  |  |
Cash and cash equivalents | [3] | 21,288 | 19,666
Total Fair Value | Certificate of deposits |  |  |
Fair Value Measurement [Line Items] |  |  |
Marketable securities classified as available-for-sale | [2] |  | 1,500
Total Fair Value | Restricted Assets |  |  |
Fair Value Measurement [Line Items] |  |  |
Restricted cash and cash equivalents | [3] | 58,226 | 68,359
Other restricted assets | [4] | 11,849 | 9,972
Restricted investments classified as held-to-maturity |  | 95,198 | 91,066
Level 1 |  |  |
Fair Value Measurement [Line Items] |  |  |
Cash and cash equivalents | [3] | 21,288 | 19,666
Marketable securities classified as available-for-sale | [2] |  | 0
Level 1 | Restricted Assets |  |  |
Fair Value Measurement [Line Items] |  |  |
Restricted cash and cash equivalents | [3] | 58,226 | 68,359
Other restricted assets | [4] | 11,849 | 9,972
Restricted investments classified as held-to-maturity |  | 0 | 0
Level 2 |  |  |
Fair Value Measurement [Line Items] |  |  |
Cash and cash equivalents | [3] | 0 | 0
Level 2 | Restricted Assets |  |  |
Fair Value Measurement [Line Items] |  |  |
Restricted cash and cash equivalents | [3] | 0 | 0
Other restricted assets | [4] | 0 | 0
Restricted investments classified as held-to-maturity |  | 95,198 | 91,066
Level 3 |  |  |
Fair Value Measurement [Line Items] |  |  |
Cash and cash equivalents | [3] | 0 | $ 0
Marketable securities classified as available-for-sale | [2] |  |
Level 3 | Restricted Assets |  |  |
Fair Value Measurement [Line Items] |  |  |
Restricted cash and cash equivalents | [3] | 0 | $ 0
Other restricted assets | [4] | 0 | 0
Restricted investments classified as held-to-maturity |  | $ 0 | $ 0
[1] | Primarily consists of deferred compensation plan accounts, which are comprised of mutual funds.
[2] | At June 26, 2015 we held no marketable securities. At December 26, 2014, all our marketable securities, which consisted of CDs, had stated maturities of less than one year.
[3] | Cash equivalents and restricted cash equivalents consist of money market funds, deposits, and investments with original maturities of three months or less.
[4] | Other restricted assets primarily consist of deferred compensation plan accounts, which are comprised of mutual funds.

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