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Inventories
 9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories

The components of inventories as of September 30, 2019 and December 31, 2018 were:
 
September 30,
2019
 
December 31,
2018
Raw materials and component parts
$
189,361

 
$
178,805

Work in process
32,725

 
37,495

Finished goods
81,408

 
63,695

Total inventories
$
303,494

 
$
279,995



Inventories are stated at the lower of cost or net realizable value. Cost, which includes material, labor and factory overhead, is determined on a FIFO basis.