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Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($)
$ in Thousands
Jun. 26, 2022
Dec. 26, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities $ 61,911 $ 341,075
Long-term AFS securities 230,173 413,380
Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Deferred compensation 14,330 21,101
Contingent consideration 0 0
Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Deferred compensation 0 0
Contingent consideration 0 0
Level 3 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Deferred compensation 0 0
Contingent consideration 5,858 7,450
Fair Value | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Deferred compensation 14,330 21,101
Contingent consideration 5,858 7,450
Debt Securities | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 61,911 341,075
Long-term AFS securities 230,173 413,380
Debt Securities | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
Debt Securities | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 61,911 341,075
Long-term AFS securities 230,173 413,380
Debt Securities | Level 3 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
U.S. Treasury securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 35,370 149,548
Long-term AFS securities 48,731 119,146
U.S. Treasury securities | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 35,370 149,548
Long-term AFS securities 48,731 119,146
U.S. Treasury securities | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
U.S. Treasury securities | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 35,370 149,548
Long-term AFS securities 48,731 119,146
U.S. Treasury securities | Level 3 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 19,633 107,334
Long-term AFS securities 149,869 241,055
Corporate debt securities | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 19,633 107,334
Long-term AFS securities 149,869 241,055
Corporate debt securities | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
Corporate debt securities | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 19,633 107,334
Long-term AFS securities 149,869 241,055
Corporate debt securities | Level 3 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
Certificates of deposit    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities   55,551
Certificates of deposit | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 55,551
Certificates of deposit | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Certificates of deposit | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 55,551
Certificates of deposit | Level 3 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Municipal securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 6,908 3,997
Long-term AFS securities 3,772 13,933
Municipal securities | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 6,908 3,997
Long-term AFS securities 3,772 13,933
Municipal securities | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
Municipal securities | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 6,908 3,997
Long-term AFS securities 3,772 13,933
Municipal securities | Level 3 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
U.S. governmental agency securities | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 3,500
Long-term AFS securities 27,801 39,246
U.S. governmental agency securities | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
U.S. governmental agency securities | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 3,500
Long-term AFS securities 27,801 39,246
U.S. governmental agency securities | Level 3 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Long-term AFS securities 0 0
Commercial paper    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities   21,145
Commercial paper | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 21,145
Commercial paper | Level 1 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Commercial paper | Level 2 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 21,145
Commercial paper | Level 3 | Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Short-term AFS securities 0 0
Life insurance    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Miscellaneous assets $ 47,900 $ 52,500