Segment Information and Geographical Data (Long-Lived Assets Attributable To Geographic Areas) (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 30, 2022
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 105,635	$ 103,827
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	91,175	89,705
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	14,009	13,640
Other (Australia, Canada, India and Uruguay) [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 451	$ 482