Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories consisted of the following as of December 31:

	2017		2016
Raw materials	$	73,026	$	46,352
Work in process	10,136		11,234
Finished goods	15,853		13,468
	$	99,015	$	71,054