XML 87 R66.htm IDEA: XBRL DOCUMENT v3.20.4
Fair Value Measurement - Financial Assets and Liabilities (Details)
$ in Thousands
12 Months Ended
Dec. 29, 2020
USD ($)
item
Dec. 31, 2019
USD ($)
Fair value of financial instruments    
Transfer of asset levels within the fair value hierarchy $ 0  
Minimum number of investment funds in rabbi trust for deferred compensation plan | item 1  
Fair value measured on a recurring basis | Level 1    
Fair value of financial instruments    
Deferred compensation plan - assets $ 55,633 $ 44,623
Deferred compensation plan - liabilities (55,614) $ (44,679)
Fair value measured on a nonrecurring basis | Level 3    
Fair value of financial instruments    
Goodwill,FairValue Measurements $ 2,625