Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues:
Royalty and license	$ 6,371	$ 5,875	$ 21,386	$ 20,110
Product sales	529	345	1,145	1,892
Development contracts and other	242	275	778	943
Total revenues	7,142	6,495	23,309	22,945
Costs and expenses:
Cost of revenues (exclusive of amortization, impairment, and abandonment of intangibles shown separately below)	273	192	802	913
Sales and marketing	1,632	1,643	5,072	5,402
Research and development	2,088	2,183	6,406	6,525
General and administrative	5,750	3,195	14,882	9,367
Amortization, impairment and abandonment of intangibles	337	324	1,071	1,016
Total costs and expenses	10,080	7,537	28,233	23,223
Operating loss	(2,938)	(1,042)	(4,924)	(278)
Interest and other income	66	58	144	172
Loss from continuing operations before provision for income taxes	(2,872)	(984)	(4,780)	(106)
Provision for income taxes	(118)	(428)	(737)	(1,289)
Loss from continuing operations	(2,990)	(1,412)	(5,517)	(1,395)
Discontinued operations (Note 10) :
Gain on sales of discontinued operations net of provision for income taxes of $0, $0, $97 and $39	0	0	153	61
Net loss	(2,990)	(1,412)	(5,364)	(1,334)
Basic and diluted net loss per share
Continuing operations	$ (0.11)	$ (0.05)	$ (0.20)	$ (0.05)
Discontinued operations	$ 0.00	$ 0.00	$ 0.01	$ 0.00
Total	$ (0.11)	$ (0.05)	$ (0.19)	$ (0.05)
Shares used in calculating basic and diluted net loss per share	27,658	28,918	27,885	28,595
Other Comprehensive Income (loss)
Change in unrealized gains (losses) on short-term investments	6	(3)	(11)	19
Total Other Comprehensive Income (loss)	6	(3)	(11)	19
Total Comprehensive loss	$ (2,984)	$ (1,415)	$ (5,375)	$ (1,315)