Inventories (Tables)

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories by Type

Inventories consisted of the following:

	As of June 30, 2017		As of December 31, 2016
	(in thousands)
Raw materials	$	13,876	$	6,348
Work-in-process	63,116		56,672
Finished goods	15,271		14,584
Total	$	92,263	$	77,604