Inventories (Tables)

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Schedule of Inventories by Type

Inventories consisted of the following:

	As of December 31,
	2014		2013
	(in thousands)
Raw materials	$	8,506	$	489
Work-in-process	20,508		9,981
Finished goods	1,834		3,677
Total	$	30,848	$	14,147