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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
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