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SUPPLEMENTAL BALANCE SHEET INFORMATION - Composition of Other Assets (Details) - USD ($) $ in Thousands | Dec. 30, 2017 | Dec. 31, 2016 | Dec. 26, 2015
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Supplemental Balance Sheet Information [Abstract] |  |  |
Life insurance policies | $ 34,008 | $ 29,456 |
Venture capital investments | 71,101 | 45,331 |
Restricted cash | 1,945 | 1,736 | $ 1,745
Other | 16,948 | 11,907 |
Other assets | $ 124,002 | $ 88,430 |

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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6812-107765 + Details
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