Inventories (Tables)

3 Months Ended

Mar. 31, 2012

Inventories

Inventories

	As of March 31, 2012		As of December 31, 2011
	(in thousands)
Raw materials	$	28,510	$	32,213
Work in process		74,740		47,010
Finished goods		26,345		33,207
Total	$	129,595	$	112,430