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Leases - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 29, 2019
Jun. 29, 2019
Jun. 30, 2018
Jan. 01, 2019
Dec. 29, 2018
Operating Leased Assets [Line Items]          
Lease renewal term 5 years 5 years      
Operating lease assets $ 55,240 $ 55,240     $ 0
Operating lease liability 55,362 55,362      
Proceeds from real estate transactions $ 45,000 $ 44,822 $ 0    
Minimum          
Operating Leased Assets [Line Items]          
Lease term 1 year 1 year      
Maximum          
Operating Leased Assets [Line Items]          
Lease term 15 years 15 years      
ASU 2016-02          
Operating Leased Assets [Line Items]          
Operating lease assets       $ 57,500  
Operating lease liability       $ 57,500