Inventories (Tables)

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following as of December 31:

	2018		2017
Raw materials	$	66,965	$	73,026
Work in process	12,333		10,136
Finished goods	13,061		15,853
	$	92,359	$	99,015