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Collaboration Agreements (Invenra Collaboration, Narrative) (Details) - Collaborative Arrangement With Invenra - USD ($) $ in Millions | 12 Months Ended |
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Dec. 28, 2018 | May 31, 2018
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Upfront and milestone payments | $ 2.0 |
Project initiation fee | 2.0 |
Discovery Project |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Upfront and milestone payments | 2.0 |
Development and Regulatory Milestone |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Eligible payment from collaboration for development and regulatory milestone achievement under collaborations agreement | 131.5 |
Additional Development and Regulatory Milestone |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Eligible payment from collaboration for development and regulatory milestone achievement under collaborations agreement | $ 127.5 |
Product Commercialization |  |
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items] |  |
Eligible payment from collaboration for development and regulatory milestone achievement under collaborations agreement |  | $ 325.0

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- Definition Eligible Payment From Collaboration For Development And Regulatory Milestone Achievement Under Collaborations Agreement + References No definition available. + Details
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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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- Details
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- Details
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- Details
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- Details
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- Details
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