Condensed Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Revenue:
License and other revenue	$ 0	$ 4,000
Total revenues	0	4,000
Operating expenses:
Research and development	6,646	4,070
General and administrative	2,189	2,014
Total operating expenses	8,835	6,084
Loss from operations	(8,835)	(2,084)
Interest expense	(315)	0
Other income (expense), net	(4,774)	3,924
Net income (loss)	(13,924)	1,840
Unrealized gain (loss) on available-for-sale securities	(11)	12
Comprehensive income (loss)	(13,935)	1,852
Net income (loss) per common share:
Net income (loss)	$ (13,924)	$ 1,840
Shares used in computing net income (loss) per common share:
Basic	46,793	45,894
Diluted	46,793	47,866
Net income (loss) per common share:
Basic	$ (0.30)	$ 0.04
Diluted	$ (0.30)	$ 0.04

License revenue is consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark (i.e. 'intellectual property'). This element includes (i) licensing revenue recognized in the period under licensing arrangements (including upfront license or technology transfer fees, milestone payments and royalty payments), (ii) revenues recognized from the outright sale of intellectual property, and (iii) any other revenues not separately presented elsewhere in the statements of comprehensive income (loss).

No definition available.