Inventory (Tables)

3 Months Ended

Mar. 31, 2013

Inventory

Schedule of inventory

	March 31, 2013		December 31, 2012
	(in thousands)
Raw materials	$	591	$	591
Work-in-process	8,550		7,884
Finished goods	189		278
	9,330		8,753
Inventories—current	189		278
Inventories—non-current	$	9,141	$	8,475