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Property and Equipment Property and Equipment Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 27, 2020
Jun. 29, 2019
Jun. 27, 2020
Jun. 29, 2019
Dec. 28, 2019
Property, Plant and Equipment [Line Items]          
Total property and equipment $ 386,242   $ 386,242   $ 332,654
Accumulated depreciation 123,289   123,289   113,102
Depreciation 5,300 $ 5,100 10,200 $ 9,400  
Buildings          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Additions     16,400    
Land          
Property, Plant and Equipment [Line Items]          
Total property and equipment $ 50,535   50,535   $ 40,216
Property, Plant and Equipment, Additions     $ 7,700