Inventories (Tables)

9 Months Ended

Sep. 26, 2020

Inventory Disclosure [Abstract]

Schedule of inventory

The components of inventories at September 26, 2020 and December 28, 2019 are as follows:

(in thousands)	September 26, 2020		December 28, 2019
Raw materials	$	81,849	$	76,732
Work in process	90,494		84,561
Finished goods	105,425		110,388
Inventory Reserves	(33,936)		(34,174)
Total	$	243,832	$	237,507