Inventory (Tables)

3 Months Ended

Mar. 31, 2012

Inventory [Abstract]

Inventory

	March 31, 2012		December 31, 2011
Raw materials	$	10,833	$	9,754
Work-in-process		2,894		1,219
Finished goods		381		1,683
Total	$	14,108	$	12,656