Revenues - Narrative (Details) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jul. 03, 2026 |
Jul. 04, 2025 |
Jul. 03, 2026 |
Jul. 04, 2025 |
Jan. 02, 2026 |
|
| Disaggregation of Revenue [Line Items] | |||||
| Contract assets | $ 0 | $ 0 | $ 0 | ||
| Contract revenue recognized, including revenue from deferred revenue beginning balance | 1,000,000.0 | $ 1,200,000 | 2,100,000 | $ 2,400,000 | |
| Ipsen And Takeda Collaborations | |||||
| Disaggregation of Revenue [Line Items] | |||||
| Revenues recognized for performance obligations satisfied in previous periods | 59,900,000 | $ 51,200,000 | 119,800,000 | $ 93,700,000 | |
| Remaining performance obligation | $ 17,800,000 | $ 17,800,000 | |||
| X | ||||||||||
- Definition Contract With Customer, Liability, Including New Contract Revenue, Recognized No definition available.
|
| X | ||||||||||
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of revenue recognized from performance obligation satisfied or partially satisfied in previous reporting periods. Includes, but is not limited to, change in transaction price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of transaction price allocated to performance obligation that has not been recognized as revenue. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|