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Financial Instruments - Gross Unrealized Losses and Fair Values for Available-for-Sale Investments (Details) - USD ($) $ in Thousands | Mar. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Debt Securities, Available-for-sale |  |
Fair value, less than 12 months | $ 150,989 | $ 225,222
Unrealized losses, less than 12 months | (2,114) | (3,199)
Fair value, 12 months or greater | 32,411 | 93,582
Unrealized losses, 12 months or greater | (492) | (2,118)
Total fair value | 183,400 | 318,804
Total unrealized Losses | (2,606) | (5,317)
Corporate bonds |  |
Debt Securities, Available-for-sale |  |
Fair value, less than 12 months | 123,585 | 172,049
Unrealized losses, less than 12 months | (1,562) | (2,227)
Fair value, 12 months or greater | 31,418 | 87,815
Unrealized losses, 12 months or greater | (479) | (2,071)
Total fair value | 155,003 | 259,864
Total unrealized Losses | (2,041) | (4,298)
Treasury notes |  |
Debt Securities, Available-for-sale |  |
Fair value, less than 12 months | 16,340 | 42,149
Unrealized losses, less than 12 months | (78) | (425)
Fair value, 12 months or greater | 0 | 2,487
Unrealized losses, 12 months or greater | 0 | (14)
Total fair value | 16,340 | 44,636
Total unrealized Losses | (78) | (439)
Asset-backed securities |  |
Debt Securities, Available-for-sale |  |
Fair value, less than 12 months | 11,064 | 11,024
Unrealized losses, less than 12 months | (474) | (547)
Fair value, 12 months or greater | 0 | 2,290
Unrealized losses, 12 months or greater | 0 | (10)
Total fair value | 11,064 | 13,314
Total unrealized Losses | (474) | (557)
Sovereign bonds |  |
Debt Securities, Available-for-sale |  |
Fair value, less than 12 months | 0 | 0
Unrealized losses, less than 12 months | 0 | 0
Fair value, 12 months or greater | 993 | 990
Unrealized losses, 12 months or greater | (13) | (23)
Total fair value | 993 | 990
Total unrealized Losses | $ (13) | $ (23)

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