Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Revenues
Royalties	$ 22,924	$ 18,551
Milestones and license fees	0	5,025
Total revenues	22,924	23,576
Operating expenses
Cost of license fees	0	2,538
Research and development	20,199	14,905
General and administrative	7,770	5,076
Total operating expenses	27,969	22,519
Operating (loss) income	(5,045)	1,057
Other income (expense)
Interest income, net	84	81
Interest expense	(5,534)	(10,231)
Other	(68)	(39)
Total other expense, net	(5,518)	(10,189)
Loss before income tax expense	(10,563)	(9,132)
Income tax expense	0	18
Net loss	$ (10,563)	$ (9,150)
Net loss per common and potential common share
Basic	$ (0.12)	$ (0.13)
Diluted	$ (0.12)	$ (0.13)
Weighted average common and potential common shares outstanding
Basic shares	86,850	68,098
Diluted shares	86,850	68,098