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Inventories
9 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories consist of the following (in thousands):
 
September 30,
 
December 31,
 
2020
 
2019
Raw material and subassemblies
$
269,062

 
$
224,239

Work-in-progress
61,624

 
44,344

Finished goods
144,159

 
120,179

 
$
474,845

 
$
388,762