CONDENSED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		92 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012
OPERATING EXPENSES
General and administrative	$ 424	$ 1,165	$ 30,146
Research and development	556	2,082	100,605
Purchased in-process research and development	0	0	34,311
Other	0	0	(375)
Total operating expenses	980	3,247	164,687
Interest and other income, net	(4)	(10)	(13,762)
Loss from continuing operations before taxes	976	3,237	150,925
Income tax benefit	0	0	(1,355)
Loss from continuing operations	976	3,237	149,570
Discontinued operations - net gain on sale of the bone device business, net of taxes of $267	0	0	(2,202)
NET LOSS	$ 976	$ 3,237	$ 147,368
Per Share Information:
Net loss, basic and diluted (in dollars per share)	$ 0.02	$ 0.08
Basic and diluted shares outstanding (in shares)	40,865	40,775