Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventory Disclosure [Abstract]

Schedule of Inventories by Type

Inventories consisted of the following:

	As of December 31,
	2016		2015
	(in thousands)
Raw materials	$	6,348	$	8,696
Work-in-process	56,672		40,695
Finished goods	14,584		7,816
Total	$	77,604	$	57,207