Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue:
Product revenue	$ 7,770	$ 4,521	$ 20,706	$ 15,712
Government grants and cooperative agreements	1,479	470	1,915	936
Total revenue	9,249	4,991	22,621	16,648
Cost of product revenue	4,650	2,324	12,073	8,416
Gross profit	4,599	2,667	10,548	8,232
Operating expenses:
Research and development	1,814	1,282	5,616	3,776
Selling, general and administrative	5,380	5,089	17,115	15,664
Amortization of intangible assets	51	0	152	0
Acquisition related costs, net	0	(201)	0	182
Total operating expenses	7,245	6,170	22,883	19,622
Loss from operations	(2,646)	(3,503)	(12,335)	(11,390)
Non-operating income (expense):
Gain (Loss) from revaluation of warrant liability	5,439	(721)	3,822	(2,336)
Foreign exchange gain (loss)	(39)	827	400	(246)
Interest expense	(394)	(226)	(847)	(458)
Other expense, net	(22)	(8)	(25)	(33)
Total non-operating income (expense), net	4,984	(128)	3,350	(3,073)
Net income (loss)	$ 2,338	$ (3,631)	$ (8,985)	$ (14,463)
Net income (loss) per common share:
Basic	$ 0.05	$ (0.09)	$ (0.19)	$ (0.37)
Diluted	$ 0.05	$ (0.09)	$ (0.19)	$ (0.37)
Weighted average common shares outstanding used for calculating net income (loss) per common share:
Basic	47,710	39,310	47,600	39,020
Diluted	48,820	39,310	47,600	39,020