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Schedule of Indebtedness Outstanding (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2020
Dec. 28, 2019
Debt Instrument [Line Items]    
Carrying amount of long-term debt $ 1,339,162 $ 1,039,162
Debt Issuance Costs, Noncurrent, Net 695 780
Long-term Debt 1,338,467 1,038,382
Line of Credit    
Debt Instrument [Line Items]    
Carrying amount of long-term debt $ 600,000 600,000
Debt Instrument, Maturity Date May 05, 2024  
Senior Notes - Series 2020-A due March 11, 2030    
Debt Instrument [Line Items]    
Carrying amount of long-term debt $ 300,000 0
Debt Instrument, Maturity Date Mar. 11, 2030  
Senior Notes - Series 2015 A due February 15, 2022    
Debt Instrument [Line Items]    
Carrying amount of long-term debt $ 225,000 225,000
Debt Instrument, Maturity Date Feb. 15, 2022  
Senior Notes - Series 2015-B due February 14, 2025    
Debt Instrument [Line Items]    
Carrying amount of long-term debt $ 200,000 200,000
Debt Instrument, Maturity Date Feb. 14, 2025  
Other    
Debt Instrument [Line Items]    
Carrying amount of long-term debt $ 14,162 $ 14,162