Inventories (Tables)

3 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories by Type

Inventories consisted of the following:

	As of March 31, 2017		As of December 31, 2016
	(in thousands)
Raw materials	$	9,172	$	6,348
Work-in-process	60,921		56,672
Finished goods	11,927		14,584
Total	$	82,020	$	77,604