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Segment Information (Schedule of Long-Lived Asset by Geographic Areas) (Details) - USD ($)
$ in Thousands
Sep. 29, 2019
Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total property and equipment, net $ 19,671 $ 20,177
United States (U.S.)    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total property and equipment, net 4,698 4,993
Canada    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total property and equipment, net 3,641 4,359
EMEA    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total property and equipment, net 344 95
China    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total property and equipment, net 4,389 7,652
APAC (excluding China)    
Revenues from External Customers and Long-Lived Assets [Line Items]    
Total property and equipment, net $ 6,599 $ 3,078