Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues:
Product sales, net	$ 42,287	$ 9,268	$ 82,810	$ 16,390
License and contract revenue	3,075	3,075	6,150	7,042
Total revenues	45,362	12,343	88,960	23,432
Operating costs and expenses:
Cost of product sales (excludes amortization of purchased intangible assets)	8,130	3,592	14,710	6,837
Selling, general and administrative	18,699	13,802	31,450	24,664
Research and development	7,686	6,285	13,516	42,829
Amortization of purchased intangibles	930	930	1,860	1,860
Total operating costs and expenses	35,445	24,609	61,536	76,190
Income (loss) from operations	9,917	(12,266)	27,424	(52,758)
Change in fair value of common stock warrant liability	(1,237)	2,826	(6,487)	4,401
Other income, net	174	(236)	694	(333)
Income (loss) before provision for income taxes	8,854	(9,676)	21,631	(48,690)
Provision for income taxes	(1,650)		(1,650)
Net income (loss)	$ 7,204	$ (9,676)	$ 19,981	$ (48,690)
Net income (loss) per share:
Basic	$ 0.14	$ (0.20)	$ 0.39	$ (1.00)
Diluted	$ 0.12	$ (0.20)	$ 0.35	$ (1.00)
Weighted average shares outstanding:
Basic	52,257,049	49,020,236	51,814,122	48,844,918
Diluted	58,265,264	49,020,236	56,845,371	48,844,918