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Collaboration Agreements - Collaboration Revenues under the Collaboration Agreement with Ipsen (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 30, 2018 | Mar. 31, 2017
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Collaboration revenues | $ 78,074 | $ 12,010
Collaborative Arrangement with Ipsen |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Collaboration revenues | $ 53,809 | $ 4,530

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of revenue earned from products sold or services provided under the terms of a contract, including, but not limited to, government contracts and construction contracts, classified as other. + 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=63488584&loc=d3e20235-122688 + Details
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- Details
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