Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenue:
Product sales	$ 2,045	$ 2,909
Royalties	2,569	2,348
Total revenue	4,614	5,257
Cost of revenue (exclusive of amortization shown below):
Product sales	1,062	1,314
Cost of Revenue	1,062	1,314
Gross profit	3,552	3,943
Operating expenses:
Selling, marketing and product support	2,050	1,849
General and administrative	1,370	1,231
Research and development	1,131	1,270
Investigation matter	1,609
Amortization of intangible assets	341	408
Restructuring		76
Total operating expenses	6,501	4,834
Loss from operations	(2,949)	(891)
Other income, net	2	5
Loss before income taxes	(2,947)	(886)
Income tax benefit	(1,494)	(218)
Net loss	$ (1,453)	$ (668)
Net loss per share:
Basic	$ (0.30)	$ (0.14)
Diluted	$ (0.30)	$ (0.14)
Weighted average number of common shares outstanding:
Basic	4,910	4,854
Diluted	4,910	4,854