Inventories, Net (Details) - USD ($) $ in Thousands	Jul. 02, 2022	Jan. 01, 2022
Summary of inventories
Raw materials	$ 100,491	$ 90,487
Work in process	40,852	34,713
Finished goods	47,896	50,638
Provision for obsolete and slow moving inventory	(10,361)	(10,209)
Total	$ 178,878	$ 165,629