Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenue:
Product revenue	$ 30,602	$ 21,677	$ 16,751
Government grants and cooperative agreements	2,442	1,432	1,231
Total revenue	33,044	23,109	17,982
Cost of product revenue	18,535	12,046	12,580
Gross profit	14,509	11,063	5,402
Operating expenses (gains):
Research and development	7,178	5,195	6,372
Selling, general and administrative	23,053	21,577	21,867
Amortization of intangible assets	202	67	0
Acquisition related costs and impairment of long-term investments in related parties, net	0	182	1,536
Settlement gain	0	0	(1,381)
Restructuring charges	0	0	841
Total operating expenses	30,433	27,021	29,235
Loss from operations	(15,924)	(15,958)	(23,833)
Non-operating expense, net:
Gain from revaluation of warrant liability	486	39	63
Foreign exchange loss	(529)	(816)	(611)
Interest expense	(964)	(689)	(10)
Other income (expense), net	(51)	513	256
Total non-operating expense, net	(1,058)	(953)	(302)
Net loss	$ (16,982)	$ (16,911)	$ (24,135)
Net loss per common share:
Basic	$ (0.35)	$ (0.42)	$ (0.69)
Diluted	$ (0.35)	$ (0.42)	$ (0.69)
Weighted average common shares outstanding used for calculating net loss per common share:
Basic	48,050	40,300	34,750
Diluted	48,050	40,300	34,750