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COMMITMENTS AND CONTINGENCIES Narrative (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2017 | Jan. 01, 2017 | Dec. 25, 2015
Commitments and Contingencies Disclosure [Abstract] |  |  |
Operating leases, maximum period afforded to each party to cancel lease agreements | 90 days |  |
Operating leases, rent expense | $ 25.9 | $ 26.5 | $ 23.1
Purchase obligation | 27.6 |  |
Purchase obligation, due in next twelve months | $ 9.2 |  |

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- Definition Operating Leases, Maximum Period Afforded to Each Party to Cancel Lease Agreements + References No definition available. + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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- Definition Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments. + References No definition available. + Details
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