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:
Licensing agreement	$ 6,678	$ 6,678	$ 13,284	$ 13,284
Royalty revenue	752	70	1,647	2,137
Product sales		1,542		5,290
Total revenues	7,430	8,290	14,931	20,711
Operating expenses:
Cost of sales, product		1,516		2,891
Research and development	5,999	2,403	10,266	4,444
General and administrative	2,572	2,842	5,430	5,331
Intangible asset amortization	372	372	741	741
Total operating expenses	8,943	7,133	16,437	13,407
Income (loss) from operations	(1,513)	1,157	(1,506)	7,304
Interest income	121	86	256	133
Income (loss) before tax provision	(1,392)	1,243	(1,250)	7,437
Tax provision (benefit)	(51)	(37)	(45)	5,628
Net income (loss)	$ (1,341)	$ 1,280	$ (1,205)	$ 1,809
Net income (loss) per share:
Basic	$ (0.05)	$ 0.05	$ (0.04)	$ 0.07
Diluted	$ (0.05)	$ 0.04	$ (0.04)	$ 0.06
Shares used in calculation of net income (loss) per share:
Basic	28,103,441	27,896,889	28,102,774	27,802,298
Diluted	28,103,441	28,438,118	28,102,774	28,383,142