Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue:
Product sales	$ 14,692	$ 12,564	$ 17,475
Royalties	11,598	12,399	13,046
Total revenue	26,290	24,963	30,521
Cost of revenue:
Product sales	9,889	6,706	8,769
Restructuring			448
Total cost of revenue	9,889	6,706	9,217
Gross profit	16,401	18,257	21,304
Operating expenses:
Selling, marketing and product support	11,768	7,289	10,609
General and administrative	6,290	5,167	6,315
Research and development	5,036	4,135	4,424
Investigation matter	3,723
Amortization of intangible assets	1,554	1,622	1,650
Restructuring		430	287
Goodwill impairment		3,175	11,685
Acquisition related income			(618)
Total operating expenses	28,371	21,818	34,352
Loss from operations	(11,970)	(3,561)	(13,048)
Other income, net	6	29	9
Loss before income taxes	(11,964)	(3,532)	(13,039)
Income tax expense (benefit)	3,937	(180)	(3,022)
Net loss	$ (15,901)	$ (3,352)	$ (10,017)
Net loss per share:
Basic	$ (3.21)	$ (0.69)	$ (2.07)
Diluted	$ (3.21)	$ (0.69)	$ (2.07)
Weighted average number of common shares outstanding:
Basic	4,955	4,886	4,834
Diluted	4,955	4,886	4,834