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Marketable Securities - Schedule of Gross Unrealized Losses and Fair Value by Major Security Type (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 25, 2021
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Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | $ (30,716) | $ (14,438)
Fair Value Less than 12 Consecutive Months | 601,202 | 768,737
Gross Unrealized Losses 12 Consecutive Months or Longer | (83,412) | (4,116)
Fair Value 12 Consecutive Months or Longer | 756,413 | 129,241
Gross Unrealized Losses, Total | (114,128) | (18,554)
Fair Value, Total | 1,357,615 | 897,978
Agency securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months |  | (110)
Fair Value Less than 12 Consecutive Months |  | 6,890
Gross Unrealized Losses 12 Consecutive Months or Longer | (786) |
Fair Value 12 Consecutive Months or Longer | 6,214 |
Gross Unrealized Losses, Total | (786) | (110)
Fair Value, Total | 6,214 | 6,890
Mortgage-backed securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (1,900) | (148)
Fair Value Less than 12 Consecutive Months | 23,229 | 18,909
Gross Unrealized Losses 12 Consecutive Months or Longer | (2,625) | (732)
Fair Value 12 Consecutive Months or Longer | 17,619 | 7,598
Gross Unrealized Losses, Total | (4,525) | (880)
Fair Value, Total | 40,848 | 26,507
Corporate debt securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (26,680) | (9,466)
Fair Value Less than 12 Consecutive Months | 508,956 | 499,084
Gross Unrealized Losses 12 Consecutive Months or Longer | (51,122) | (2,361)
Fair Value 12 Consecutive Months or Longer | 498,834 | 85,033
Gross Unrealized Losses, Total | (77,802) | (11,827)
Fair Value, Total | 1,007,790 | 584,117
Municipal securities [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months | (2,136) | (4,247)
Fair Value Less than 12 Consecutive Months | 69,017 | 226,009
Gross Unrealized Losses 12 Consecutive Months or Longer | (26,725) | (617)
Fair Value 12 Consecutive Months or Longer | 225,679 | 29,405
Gross Unrealized Losses, Total | (28,861) | (4,864)
Fair Value, Total | 294,696 | 255,414
Other [Member] |  |
Marketable Securities [Line Items] |  |
Gross Unrealized Losses Less than 12 Consecutive Months |  | (467)
Fair Value Less than 12 Consecutive Months |  | 17,845
Gross Unrealized Losses 12 Consecutive Months or Longer | (2,154) | (406)
Fair Value 12 Consecutive Months or Longer | 8,067 | 7,205
Gross Unrealized Losses, Total | (2,154) | (873)
Fair Value, Total | $ 8,067 | $ 25,050

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