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Collaboration Agreements - GSK (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Jul. 03, 2020 | Jun. 28, 2019 | Jul. 03, 2020 | Jun. 28, 2019
Collaboration Agreement with GlaxoSmithKline |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Royalty expense | $ 7.6 | $ 7.8 | $ 15.7 | $ 15.1
GSK |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |
Percent of royalty on net sale |  |  | 3.00% |

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- Definition Amount of expense related to royalty payments under a contractual arrangement such as payment for mineral and drilling rights and use of technology or intellectual property. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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- Details
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- Details
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