Condensed Consolidated Statements Of Operations And Comprehensive Income (Loss) (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
Revenue:
Product sales	$ 3,403	$ 4,085	$ 8,983	$ 12,617
Royalties	3,774	3,337	9,159	9,052
Total revenue	7,177	7,422	18,142	21,669
Costs of revenue (exclusive of amortization shown below):
Product sales	1,861	1,775	4,493	5,598
Gross profit	5,316	5,647	13,649	16,071
Operating expenses:
Selling, marketing and product support	1,567	2,616	5,237	7,874
General and administrative	1,532	1,743	4,072	4,749
Research and development	954	1,091	3,241	3,119
Amortization of intangible assets	409	417	1,227	1,243
Restructuring			430
Goodwill impairment		11,685	3,175	11,685
Total operating expenses	4,462	17,552	17,382	28,670
Income (loss) from operations	854	(11,905)	(3,733)	(12,599)
Other income, net	3	1	27	7
Income (loss) before income taxes	857	(11,904)	(3,706)	(12,592)
Income tax benefit	(132)	(3,174)	(369)	(3,264)
Net income (loss)	989	(8,730)	(3,337)	(9,328)
Net income (loss) per common share:
Basic	$ 0.20	$ (1.81)	$ (0.68)	$ (1.93)
Diluted	$ 0.20	$ (1.81)	$ (0.68)	$ (1.93)
Weighted average number of common shares outstanding:
Basic	4,904	4,836	4,878	4,826
Diluted	4,964	4,836	4,878	4,826
Comprehensive income (loss):
Net income (loss)	989	(8,730)	(3,337)	(9,328)
Other comprehensive income (loss):
Foreign currency translation adjustment	551	(634)	478	(36)
Comprehensive income (loss)	$ 1,540	$ (9,364)	$ (2,859)	$ (9,364)