Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues:
Royalty and license	$ 5,882	$ 6,304	$ 14,235	$ 12,707
Product sales	546	1,850	1,547	4,818
Development contracts and other	254	321	668	659
Total revenues	6,682	8,475	16,450	18,184
Costs and expenses:
Cost of revenues (exclusive of amortization, impairment, and abandonment of intangibles shown separately below)	247	761	721	2,130
Sales and marketing	1,909	1,911	3,759	4,264
Research and development	2,243	2,005	4,342	4,466
General and administrative	3,061	3,084	6,172	8,800
Amortization and impairment or abandonment of intangibles	335	204	692	439
Total costs and expenses	7,795	7,965	15,686	20,099
Operating income (loss)	(1,113)	510	764	(1,915)
Interest and other income	52	63	114	142
Income (loss) from continuing operations before provison for income taxes	(1,061)	573	878	(1,773)
Provision for income taxes	(267)	(423)	(861)	(762)
Income (loss) from continuing operations	(1,328)	150	17	(2,535)
Discontinued operations (Note 10) :
Gain on sales of discontinued operations net of provision for income taxes of $12, $0, $39 and $1	18	30	61	61
Net income (loss)	$ (1,310)	$ 180	$ 78	$ (2,474)
Basic net income (loss) per share
Continuing operations	$ (0.05)	$ 0.01	$ 0.00	$ (0.09)
Discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Total	$ (0.05)	$ 0.01	$ 0.00	$ (0.09)
Shares used in calculating basic net income (loss) per share	28,610	28,101	28,431	28,093
Diluted net income (loss) per share
Continuing operations	$ (0.05)	$ 0.01	$ 0.00	$ (0.09)
Discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Total	$ (0.05)	$ 0.01	$ 0.00	$ (0.09)
Shares used in calculating basic net income (loss) per share	28,610	28,519	29,241	28,093