v3.25.4

Basis of Presentation and New Accounting Standards - Narrative (Details) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Sep. 29, 2025 USD ($) | Aug. 14, 2025 USD ($) | Dec. 28, 2025 USD ($) ft² building | Sep. 29, 2025 USD ($) | Sep. 28, 2025 USD ($) | Dec. 28, 2025 USD ($) ft² segment building | Dec. 29, 2024 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 |  | $ 1,292,300 | $ 835,400 |  | $ 1,292,300 |  | $ 955,400 |
Number of reportable segments | segment |  |  |  |  |  | 1 |  |  |
Inventory write-off | 0 |  | 22,800 | 29,000 | $ 29,000 |  | $ 0 |  |
Cash tax refunds |  |  |  |  |  | $ 698,600 |  | 189,100 |
Deferred AMIC |  |  | 44,600 |  |  | 44,600 |  | 0 |
Interest income |  |  |  |  |  |  |  | 2,600 |
Investment tax credit receivable | 654,000 |  | 72,500 | 654,000 |  | 72,500 |  | 653,400 |
Long-term investment tax credit receivable | $ 181,300 |  | 109,500 | 181,300 |  | 109,500 |  | 105,000 |
Increase (decrease) in investment tax credit receivable |  |  |  |  | $ 50,700 |  |  |  |
Gain on sale of property |  |  | 2,400 | 5,700 |  |  | $ 800 |  |
Net unrealized income (loss) on available-for-sale securities |  |  | (400) |  |  | $ (400) |  | (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 |  |  | $ 2,400 |  |  |  |  |  |
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 |  |  |

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