Segment Reporting (Details 1) - USD ($) $ in Thousands	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Americas:
Total Americas	$ 199,355	$ 194,507	$ 190,052
Total long-lived assets	251,342	238,607	228,599
United States
Summary of long-lived assets by geography
Long-Lived Assets in Individual Foreign Countries	198,744	193,750	189,665
Other Americas [Member]
Summary of long-lived assets by geography
Long-Lived Assets in Individual Foreign Countries	611	757	387
Asia [Member]
Summary of long-lived assets by geography
Long-Lived Assets in Individual Foreign Countries	37,678	30,564	24,767
Europe, Middle East and Africa [Member]
Summary of long-lived assets by geography
Long-Lived Assets in Individual Foreign Countries	13,615	12,692	12,832
Japan [Member]
Summary of long-lived assets by geography
Long-Lived Assets in Individual Foreign Countries	$ 694	$ 844	$ 948