v3.26.1
Basis of Presentation and New Accounting Standards - Narrative (Details)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 29, 2025
USD ($)
Aug. 14, 2025
USD ($)
Sep. 29, 2025
USD ($)
Sep. 28, 2025
USD ($)
Mar. 29, 2026
USD ($)
ft²
building
Mar. 29, 2026
USD ($)
ft²
building
segment
Mar. 30, 2025
USD ($)
Jun. 29, 2025
USD ($)
Jun. 22, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Reduction of debt, percentage         70.00% 70.00%      
Total cash, cash equivalents and short-term investments $ 835,400   $ 835,400   $ 1,164,800 $ 1,164,800   $ 955,400  
Number of reportable segments | segment           1      
Inventory write-off 0   29,000 $ 29,000 29,100   $ 0    
Cash tax refunds           $ 698,600   189,100  
Interest income               2,600  
Investment tax credit receivable 654,000   654,000   71,500 71,500   653,400  
Long-term investment tax credit receivable $ 181,300   181,300   109,500 109,500   105,000  
Increase (decrease) in investment tax credit receivable       $ 50,700          
Gain on sale of property     5,700   2,900   $ 1,000    
Net unrealized income (loss) on available-for-sale securities         (200) $ (200)   (3,800)  
Unrealized loss on available-for-sale securities               $ 2,400  
Equipment                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Gain on sale of property     $ 5,700            
Building, Build Improvements, Land and Equipment                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Gain on sale of property         $ 2,900        
Building                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Number of buildings sold | building         1 1      
Idle Property in Durham, NC                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Area of land | ft²         254,000 254,000      
Senior Notes | Senior Secured Notes Due 2030                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Percentage of debt held by key debtholders                 97.00%
Senior Notes | Convertible Senior Notes Due 2026                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Stated interest rate (as a percent)                 1.75%
Senior Notes | Convertible Senior Notes Due 2028                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Stated interest rate (as a percent)                 0.25%
Senior Notes | Convertible Senior Notes Due 2029                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Stated interest rate (as a percent)                 1.875%
Senior Notes | Convertible Second-Lien Senior Secured Notes Due 2031                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Stated interest rate (as a percent) 2.50% 2.50% 2.50%            
Convertible Notes                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Percentage of debt held by key debtholders                 67.00%
Convertible Notes | 2L Convertible Notes                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Aggregate principal amount   $ 301,130              
Non-holdback rights offering, percentage   60.00%              
Holdback rights offering, percentage   40.00%              
Convertible Notes | Backstop Premium                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Aggregate principal amount $ 331,400 $ 30,250 $ 331,400            
Minimum | Customer Relationships, Developed Technology & Trade Names                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Estimated Useful Life (in Years)         5 years 5 years      
Minimum | Patents                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Estimated Useful Life (in Years)         6 months 6 months      
Maximum | Customer Relationships, Developed Technology & Trade Names                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Estimated Useful Life (in Years)         11 years 11 years      
Maximum | Patents                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Estimated Useful Life (in Years)         23 years 23 years