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Inventories
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories consist of the following (in thousands):
 
March 31,
 
December 31,
 
2020
 
2019
Raw material and subassemblies
$
221,768

 
$
224,239

Work-in-progress
52,271

 
44,344

Finished goods
123,487

 
120,179

 
$
397,526

 
$
388,762