Segment Reporting (Details 1) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Summary of long-lived assets by geography
Long-lived assets	$ 311,125	$ 275,855	$ 252,630
United States
Summary of long-lived assets by geography
Long-lived assets	248,292	220,023	200,025
Other Americas [Member]
Summary of long-lived assets by geography
Long-lived assets	753	728	475
Americas [Member]
Summary of long-lived assets by geography
Long-lived assets	249,045	220,751	200,500
China [Member]
Summary of long-lived assets by geography
Long-lived assets	16,416	15,729	9,608
Other Asia [Member]
Summary of long-lived assets by geography
Long-lived assets	28,668	27,890	30,021
Asia [Member]
Summary of long-lived assets by geography
Long-lived assets	45,084	43,619	39,629
Europe, Middle East and Africa [Member]
Summary of long-lived assets by geography
Long-lived assets	16,304	10,474	11,784
Japan [Member]
Summary of long-lived assets by geography
Long-lived assets	$ 692	$ 1,011	$ 717