Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenues:
Product sales, net	$ 11,037	$ 0	$ 16,492	$ 0
Royalties	28,129	27,012	84,613	78,453
Sale of royalty rights	0	0	0	25,000
Other	36	7	36	7
Total revenues	39,202	27,019	101,141	103,460
Operating expenses:
Cost of goods sold	1,077	0	1,615	0
Research and development	18,798	17,957	65,381	70,797
Selling, general and administrative	17,558	8,329	46,228	25,769
Total operating expenses	37,433	26,286	113,224	96,566
Operating income (loss)	1,769	733	(12,083)	6,894
Other income (expense)
Interest income, net	108	64	221	224
Interest expense	(2,959)	(4,444)	(9,388)	(14,445)
Other	(5)	323	(18)	795
Total other expense, net	(2,856)	(4,057)	(9,185)	(13,426)
Loss before income tax expense	(1,087)	(3,324)	(21,268)	(6,532)
Income tax expense	0	0	4	0
Net loss	$ (1,087)	$ (3,324)	$ (21,272)	$ (6,532)
Net loss per common and potential common share
Basic	$ (0.01)	$ (0.04)	$ (0.22)	$ (0.08)
Diluted	$ (0.01)	$ (0.04)	$ (0.22)	$ (0.08)
Weighted average common and potential common shares outstanding
Basic	102,227	86,947	96,034	86,910
Diluted	102,227	86,947	96,034	86,910