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Costs Associated with LED Business Restructuring Costs Associated with LED Business Restructuring (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 25, 2016 | Dec. 27, 2015
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, incurred cost | $ 15,913 | $ 102,400
Loss on disposal or impairment of long-lived assets | Loss on disposal or impairment of long-lived assets |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, incurred cost | 9,005 |
Severance expense | Sales, general and administrative expenses |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, incurred cost | 300 |
Lease termination and facility consolidation costs | Sales, general and administrative expenses |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, incurred cost | 1,735 |
Wolfspeed business [Member] |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, incurred cost |  | $ 4,900
Wolfspeed business [Member] | Loss on disposal or impairment of long-lived assets | Loss on disposal or impairment of long-lived assets |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring and related cost, incurred cost | $ 4,873 |

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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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