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Revenues - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 03, 2025 | Sep. 27, 2024 | Oct. 03, 2025 | Sep. 27, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Contract revenue recognized, including revenue from deferred revenue beginning balance | $ 1.0 | $ 1.4 | $ 3.1 | $ 4.3
Ipsen And Takeda Collaborations |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Revenues recognized for performance obligations satisfied in previous periods | 57.6 | $ 60.7 | 151.3 | $ 302.0
Remaining performance obligation | $ 31.1 |  | $ 31.1 |

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