Segment Information (Schedule of Long-Lived Asset by Geographic Region) (Details) - USD ($) $ in Thousands	Mar. 29, 2020	Dec. 31, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	$ 43,949	$ 46,600
United States (U.S.)
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	21,908	23,137
Americas (excluding U.S.)
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	3,522	4,036
EMEA
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	4,197	3,782
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	4,591	5,040
APAC (excluding China)
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	$ 9,731	$ 10,605