Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Product sales	$ 2,572	$ 2,651	$ 4,900	$ 4,549
Royalties	2,609	3,287	4,620	5,711
Total revenue	5,181	5,938	9,520	10,260
Cost of revenue:
Product sales	977	1,675	1,996	2,880
Total cost of revenue	977	1,675	1,996	2,880
Gross profit	4,204	4,263	7,524	7,380
Operating expenses:
Selling, marketing and product support	1,322	2,471	2,737	5,191
General and administrative	1,390	1,498	2,762	2,870
Research and development	1,123	1,423	2,200	3,239
Amortization of intangible assets	382	$ 393	763	$ 782
Sale of business unit	$ 751		857
Restructuring			$ 119	$ 460
Investigation matter		$ 36		152
Total operating expenses	$ 4,968	5,821	$ 9,438	12,694
Loss from operations	(764)	(1,558)	(1,914)	(5,314)
Other, net	30	15	29	14
Loss before income taxes	(734)	(1,543)	(1,885)	(5,300)
Income tax expense (benefit)	8	(10)	24	(10)
Net loss	$ (742)	$ (1,533)	$ (1,909)	$ (5,290)
Net loss per share:
Basic	$ (0.15)	$ (0.31)	$ (0.38)	$ (1.06)
Diluted	$ (0.15)	$ (0.31)	$ (0.38)	$ (1.06)
Weighted average number of common shares outstanding:
Basic	5,008,000	4,980,000	5,003,000	4,978,000
Diluted	5,008,000	4,980,000	5,003,000	4,978,000