Inventories

12 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories are comprised of the following amounts:

	As of December 31,
	2018		2017
Raw materials	$	52,930	$	37,337
Work in process	42,578		27,669
Finished goods	27,107		17,611
Inventories	$	122,615	$	82,617