Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues:
Royalties	$ 1,816	$ 2,869	$ 4,089	$ 5,785
Licensing fee and milestone amortization		200		200
Other product and service revenues				194
Total revenues	1,816	3,069	4,089	6,179
Expenses:
Research and development	4,780	1,404	8,797	2,570
General and administrative	1,363	1,509	2,766	2,752
Cost of revenues, principally royalties to third parties	186	368	451	945
Total expenses	6,329	3,281	12,014	6,267
Loss from operations	(4,513)	(212)	(7,925)	(88)
Interest expense and other, net	(2,470)	(2,561)	(4,924)	(5,125)
Change in fair value of warrant liability	(229)		(1,248)
Net loss	$ (6,754)	$ (2,773)	$ (11,601)	$ (5,213)
Net loss per share:
Loss per share - basic	$ (0.05)	$ (0.03)	$ (0.09)	$ (0.05)
Loss per share - diluted	$ (0.05)	$ (0.03)	$ (0.09)	$ (0.05)
Weighted average shares used in per-share calculation:
Basic	131,951	94,823	131,951	94,823
Diluted	131,951	94,823	131,951	94,823