Inventories

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consisted of the following:

	As of March 31, 2018		As of December 31, 2017
	(in thousands)
Raw materials	$	17,587	$	20,924
Work-in-process	78,232		74,237
Finished goods	21,527		16,669
Total	$	117,346	$	111,830