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Restructuring and Asset Impairment - Severance and Retention Costs by Reportable Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jul. 01, 2017 | Jun. 25, 2016 | Jul. 01, 2017 | Jun. 25, 2016
Segment Reporting Information [Line Items] |  |  |  |
Total severance and transition costs | $ 1,193 | $ 4,099 | $ 2,210 | $ 4,120
RMS |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total severance and transition costs | 183 | 0 | 183 | 0
DSA |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total severance and transition costs | 344 | 4,099 | 540 | 4,120
Manufacturing |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total severance and transition costs | 506 | 0 | 1,327 | 0
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total severance and transition costs | $ 160 | $ 0 | $ 160 | $ 0

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: 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 4: 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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