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Revenues - Contract Assets and Liabilities (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 28, 2024 | Jun. 30, 2023 | Jun. 28, 2024 | Jun. 30, 2023 | Dec. 29, 2023
Revenue from Contract with Customer [Abstract] |  |  |  |  |
Contract assets | $ 1,469 |  | $ 1,469 |  | $ 1,321
Contract liabilities: |  |  |  |  |
Current portion | 3,443 |  | 3,443 |  | 5,406
Long-term portion | 4,420 |  | 4,420 |  | 5,524
Total contract liabilities | 7,863 |  | 7,863 |  | $ 10,930
Disaggregation of Revenue [Line Items] |  |  |  |  |
Contract revenue recognized, including revenue from deferred revenue beginning balance |  |  | 3,000 | $ 3,600 |
Ipsen, Takeda, Daiichi Sankyo and Genentech Collaborations |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Revenues recognized for performance obligations satisfied in previous periods | 195,400 | $ 53,900 | 241,300 | $ 91,900 |
Ipsen And Takeda Collaborations |  |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |  |
Remaining performance obligation | $ 47,800 |  | $ 47,800 |  |

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- 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
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