Condensed Consolidated Statements of Operations (USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Product and service revenue	$ 2,620,845	$ 2,325,769	$ 7,614,250	$ 5,488,946
Research and development contract revenue	1,562,719	778,017	2,347,943	1,985,991
Licensed technology revenue	163,125		326,250
Total revenue	4,346,689	3,103,786	10,288,443	7,474,937
Cost of product and service revenue	4,931,170	4,542,373	11,621,623	7,830,226
Cost of research and development contract revenue	2,473,516	1,679,372	3,810,596	3,560,886
Research and development expense	1,106,248	4,381,814	2,168,974	9,868,531
Selling, general and administrative expenses	3,882,917	10,540,814	7,444,515	14,398,531
Amortization of intangible assets	588,473	566,880	1,169,962	1,129,055
Operating loss	(8,635,635)	(18,607,467)	(15,927,227)	(29,312,292)
Interest and other income and net realized losses from available-for-sale securities	87,224	268,622	121,122	610,661
Change in fair value of warrant liability	1,790,520		1,790,520
Change in fair value of auction rate securities repurchase agreement		(2,469,113)		(3,135,032)
Net trading gain		2,469,113		3,135,032
Interest and other expense and foreign currency gain (loss)	5,223	(177,110)	19,717	(373,074)
Net loss	$ (6,752,668)	$ (18,515,955)	$ (13,995,868)	$ (29,074,705)
Loss per share:
Basic and diluted (in dollars per share)	$ (0.41)	$ (1.41)	$ (0.95)	$ (2.22)
Weighted average number of common shares outstanding (in shares)	16,320,235	13,116,175	14,781,215	13,080,315

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Costs incurred and are directly related to generating contract revenues.

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Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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