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Collaboration Agreements And Business Development Activities - Ipsen Collaboration Narrative (Details) $ in Millions, $ in Millions | 12 Months Ended |
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Jan. 03, 2025 USD ($) | Jan. 03, 2025 CAD ($) | Dec. 30, 2022 USD ($) | Dec. 31, 2016 USD ($) | Jan. 03, 2025 CAD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Collaboration agreement percent of royalty on net sale | 3.00% | 3.00% |  |  |
Collaborative arrangement with Ipsen |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Collaboration period to achieve specified levels of commercial performance | 10 years | 10 years |  |  |
Upfront payments |  |  |  | $ 210.0 |
Milestone payments earned to date | $ 654.2 |  |  |  |
Milestone payments earned | 164.7 |  | $ 27.0 |  |
Eligible payment from collaboration for development and regulatory milestone achievement under collaborations agreement | 7.0 |  |  |  |
Maximum amount eligible for commercial milestones under collaborations agreement | $ 200.0 |  |  |  | $ 23.5
Research and development arrangement performed for others, reimbursement for costs incurred, percent | 35.00% | 35.00% |  |  |
Revenue from contract with customer, commercial sales milestone | $ 2.2 |  |  |  |
Cumulative net sales milestone | 600.0 | $ 30.0 |  |  |
Revenue from contract with customer, regulatory milestone | 12.5 |  |  |  |
Remaining performance obligation | 25.8 |  |  |  |
Collaborative arrangement with Ipsen | License revenues |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Revenue from contract with customer, commercial sales milestone | 150.0 |  |  |  |
Revenue from contract with customer, regulatory milestone upon submission of application | 10.8 |  |  |  |
Collaborative arrangement with Ipsen | Collaboration services revenues |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Revenue from contract with customer, regulatory milestone upon submission of application | $ 0.6 |  |  |  |
Collaborative arrangement with Ipsen | Minimum | Final tier |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Percent of royalty on net sale | 22.00% | 22.00% |  |  |
Collaborative arrangement with Ipsen | Maximum | Final tier |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Percent of royalty on net sale | 26.00% | 26.00% |  |  |

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