Segment Reporting (Details 1) - USD ($) $ in Thousands	Jun. 29, 2019	Dec. 29, 2018
Summary of long-lived assets by geography
Total long-lived assets	$ 257,882	$ 252,630
United States [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	202,695	200,025
Other Americas [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	843	475
Americas [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	203,538	200,500
China [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	15,593	9,608
Other Asia [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	27,550	30,021
Asia [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	43,143	39,629
EMEA [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	10,547	11,784
Japan [Member]
Summary of long-lived assets by geography
Long-lived assets in individual foreign countries	$ 654	$ 717