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Inventories
 3 Months Ended
Apr. 03, 2020
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories comprise the following (in thousands):
 
April 3,
2020
 
December 31,
2019
Raw materials
$
83,078

 
$
79,742

Work-in-process
60,761

 
60,042

Finished goods
26,459

 
27,472

Total
$
170,298

 
$
167,256