Inventories (Tables)

6 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Schedule of Inventories by Type

Inventories consisted of the following:

	As of June 30, 2015		As of December 31, 2014
	(in thousands)
Raw materials	$	8,147	$	8,506
Work-in-process	30,989		20,508
Finished goods	2,977		1,834
Total	$	42,113	$	30,848