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Marketable Securities - Schedule of Gross Unrealized Losses and Fair Value by Major Security Type (Details) - USD ($) $ in Thousands | Jun. 28, 2025 | Dec. 28, 2024
--- | --- | ---
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | $ (1,532) | $ (4,993)
Fair Value Less than 12 Consecutive Months | 296,156 | 419,246
Gross Unrealized Losses 12 Consecutive Months or Longer | (16,513) | (33,696)
Fair Value 12 Consecutive Months or Longer | 706,099 | 931,764
Gross Unrealized Losses, Total | (18,045) | (38,689)
Fair Value, Total | 1,002,255 | 1,351,010
Agency securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (9) | (125)
Fair Value Less than 12 Consecutive Months | 20,966 | 24,153
Gross Unrealized Losses 12 Consecutive Months or Longer | (220) | (352)
Fair Value 12 Consecutive Months or Longer | 6,780 | 6,647
Gross Unrealized Losses, Total | (229) | (477)
Fair Value, Total | 27,746 | 30,800
Mortgage-backed securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (90) | (137)
Fair Value Less than 12 Consecutive Months | 25,529 | 9,803
Gross Unrealized Losses 12 Consecutive Months or Longer | (1,763) | (4,238)
Fair Value 12 Consecutive Months or Longer | 16,334 | 29,421
Gross Unrealized Losses, Total | (1,853) | (4,375)
Fair Value, Total | 41,863 | 39,224
Corporate debt securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (1,321) | (4,503)
Fair Value Less than 12 Consecutive Months | 233,406 | 350,289
Gross Unrealized Losses 12 Consecutive Months or Longer | (9,185) | (19,334)
Fair Value 12 Consecutive Months or Longer | 476,545 | 667,176
Gross Unrealized Losses, Total | (10,506) | (23,837)
Fair Value, Total | 709,951 | 1,017,465
Municipal securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (107) | (228)
Fair Value Less than 12 Consecutive Months | 15,602 | 35,001
Gross Unrealized Losses 12 Consecutive Months or Longer | (5,305) | (9,679)
Fair Value 12 Consecutive Months or Longer | 205,337 | 226,901
Gross Unrealized Losses, Total | (5,412) | (9,907)
Fair Value, Total | 220,939 | 261,902
Other [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (5) | 0
Fair Value Less than 12 Consecutive Months | 653 | 0
Gross Unrealized Losses 12 Consecutive Months or Longer | (40) | (93)
Fair Value 12 Consecutive Months or Longer | 1,103 | 1,619
Gross Unrealized Losses, Total | (45) | (93)
Fair Value, Total | $ 1,756 | $ 1,619

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