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Segment Information - Revenue Per Significant Product or Service (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 25, 2016 | Jun. 27, 2015 | Jun. 25, 2016 | Jun. 27, 2015
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 434,055 | $ 339,573 | $ 788,923 | $ 659,987
Operating segments | RMS |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 125,058 | 119,287 | 248,397 | 238,676
Operating segments | DSA |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | 221,059 | 153,375 | 379,042 | 293,387
Operating segments | Manufacturing |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Revenue | $ 87,938 | $ 66,911 | $ 161,484 | $ 127,924

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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