Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories are comprised of the following amounts:

	June 30, 2018		December 31, 2017
Raw materials	$	48,895	$	37,337
Work in process	42,311		27,669
Finished goods	24,930		17,611
Inventories	$	116,136	$	82,617