Inventories (Tables)

9 Months Ended

Sep. 30, 2017

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories are comprised of the following amounts:

	September 30,		December 31,
	2017		2016
Raw materials	$	35,253	$	36,081
Work in process		24,535		22,644
Finished goods		16,853		8,412
Inventories	$	76,641	$	67,137