Inventory

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventory

8. Inventory

Inventories are stated at the lower of cost or net realizable value on a first-in, first-out basis and are comprised of the following (in thousands):

	June 30, 2018		December 31, 2017
Raw materials	$	20,129	$	8,963
Work-in-process		5,686		4,208
	$	25,815	$	13,171