Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues
Product sales, net	$ 654	$ 0
Royalties	24,780	22,924
Total revenues	25,434	22,924
Operating expenses
Cost of goods sold	65	0
Research and development	15,695	20,199
Selling, general and administrative	14,205	7,770
Total operating expenses	29,965	27,969
Operating loss	(4,531)	(5,045)
Other income (expense)
Interest income, net	55	84
Interest expense	(3,395)	(5,534)
Other	75	(68)
Total other expense, net	(3,265)	(5,518)
Loss before income tax expense	(7,796)	(10,563)
Net loss	$ (7,796)	$ (10,563)
Net loss per common and potential common share
Basic	$ (0.09)	$ (0.12)
Diluted	$ (0.09)	$ (0.12)
Weighted average common and potential common shares outstanding
Basic	88,402	86,850
Diluted	88,402	86,850