XML 17 R88.htm IDEA: XBRL DOCUMENT v3.19.3
Segment Information and Enterprise Reporting Long-lived assets by geographic area (Details) - USD ($)
$ in Thousands
Sep. 28, 2019
Dec. 29, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-Lived Assets $ 209,889 $ 274,389
Concentration Risk, Long-lived Asset Geographic Area, Percentage 100.00% 100.00%
Reportable Geographical Components | United States (U.S.)    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-Lived Assets $ 206,578 $ 262,373
Concentration Risk, Long-lived Asset Geographic Area, Percentage 98.40% 95.60%
Reportable Geographical Components | International    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Long-Lived Assets $ 3,311 $ 12,016
Concentration Risk, Long-lived Asset Geographic Area, Percentage 1.60% 4.40%