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Marketable Securities - Schedule of Gross Unrealized Losses and Fair Value by Major Security Type (Details) - USD ($) $ in Thousands | Mar. 29, 2025 | Dec. 28, 2024
--- | --- | ---
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | $ (1,774) | $ (4,993)
Fair Value Less than 12 Consecutive Months | 299,173 | 419,246
Gross Unrealized Losses 12 Consecutive Months or Longer | (23,629) | (33,696)
Fair Value 12 Consecutive Months or Longer | 853,848 | 931,764
Gross Unrealized Losses, Total | (25,403) | (38,689)
Fair Value, Total | 1,153,021 | 1,351,010
Agency securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (14) | (125)
Fair Value Less than 12 Consecutive Months | 20,226 | 24,153
Gross Unrealized Losses 12 Consecutive Months or Longer | (273) | (352)
Fair Value 12 Consecutive Months or Longer | 6,727 | 6,647
Gross Unrealized Losses, Total | (287) | (477)
Fair Value, Total | 26,953 | 30,800
Mortgage-backed securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (59) | (137)
Fair Value Less than 12 Consecutive Months | 21,127 | 9,803
Gross Unrealized Losses 12 Consecutive Months or Longer | (2,803) | (4,238)
Fair Value 12 Consecutive Months or Longer | 24,868 | 29,421
Gross Unrealized Losses, Total | (2,862) | (4,375)
Fair Value, Total | 45,995 | 39,224
Corporate debt securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (1,624) | (4,503)
Fair Value Less than 12 Consecutive Months | 238,067 | 350,289
Gross Unrealized Losses 12 Consecutive Months or Longer | (13,173) | (19,334)
Fair Value 12 Consecutive Months or Longer | 597,821 | 667,176
Gross Unrealized Losses, Total | (14,797) | (23,837)
Fair Value, Total | 835,888 | 1,017,465
Municipal securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (70) | (228)
Fair Value Less than 12 Consecutive Months | 18,992 | 35,001
Gross Unrealized Losses 12 Consecutive Months or Longer | (7,324) | (9,679)
Fair Value 12 Consecutive Months or Longer | 223,300 | 226,901
Gross Unrealized Losses, Total | (7,394) | (9,907)
Fair Value, Total | 242,292 | 261,902
Other [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (7) | 0
Fair Value Less than 12 Consecutive Months | 761 | 0
Gross Unrealized Losses 12 Consecutive Months or Longer | (56) | (93)
Fair Value 12 Consecutive Months or Longer | 1,132 | 1,619
Gross Unrealized Losses, Total | (63) | (93)
Fair Value, Total | $ 1,893 | $ 1,619

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