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Collaboration Agreements And Business Development Activities - Takeda Collaboration Narrative (Details) - USD ($)
12 Months Ended
Dec. 29, 2023
Dec. 31, 2021
Dec. 31, 2017
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Collaboration agreement percent of royalty on net sale 3.00%    
Collaborative arrangement with Takeda      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Upfront payments     $ 50,000,000
Milestone payments earned to date $ 138,000,000    
Milestone payments earned 11,000,000 $ 35,000,000  
Maximum amount eligible for commercial milestones under collaborations agreement 108,000,000    
Revenue from contract with customer, commercial sales milestone 10,000,000    
Revenue from contract with customer, commercial milestone 11,000,000    
Remaining performance obligation 27,800,000    
Collaborative arrangement with Takeda | Initial      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Royalty tier $ 300,000,000    
Collaborative arrangement with Takeda | Initial | Minimum      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Percent of royalty on net sale 15.00%    
Collaborative arrangement with Takeda | Initial | Maximum      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Percent of royalty on net sale 24.00%    
Collaborative arrangement with Takeda | Final tier | Minimum      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Percent of royalty on net sale 20.00%    
Collaborative arrangement with Takeda | Final tier | Maximum      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Percent of royalty on net sale 30.00%    
Collaborative arrangement with Takeda | Japan      
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]      
Research and development arrangement performed for others, reimbursement for costs incurred, percent 100.00%    
Collaboration period to achieve specified levels of commercial performance 2 years    
Cumulative net sales milestone $ 150,000,000