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Inventories (Tables)
3 Months Ended
Mar. 31, 2020
Inventory Disclosure [Abstract]  
Components of Inventories

The components of inventories as of March 31, 2020 and December 31, 2019 were:
 
March 31,
2020
 
December 31,
2019
Raw materials and component parts
$
204,491

 
$
182,382

Work in process
42,021

 
28,761

Finished goods
94,069

 
82,324

Total inventories
$
340,581

 
$
293,467