Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Revenue:
Product sales	$ 17,475	$ 19,162	$ 12,483
Royalties	13,046	12,519	12,110
Total Revenue	30,521	31,681	24,593
Cost of revenue (exclusive of amortization shown below):
Product sales	8,769	7,799	4,297
Restructuring	448
Total Cost of Revenue	9,217	7,799	4,297
Gross profit	21,304	23,882	20,296
Operating expenses:
Selling, marketing and product support	10,609	9,807	7,201
General and administrative	6,315	4,372	3,779
Research and development	4,424	3,630	3,336
Amortization of intangible assets	1,650	1,218	768
Restructuring	287
Goodwill impairment	11,685
Acquisition related expenses (income)	(618)	817
Total operating expenses	34,352	19,844	15,084
Income (loss) from operations	(13,048)	4,038	5,212
Other income (expense), net	9	(123)	7
Income (loss) before income taxes	(13,039)	3,915	5,219
Income tax expense (benefit)	(3,022)	910	1,354
Net income (loss)	$ (10,017)	$ 3,005	$ 3,865
Net income (loss) per share:
Basic	$ (2.07)	$ 0.66	$ 0.97
Diluted	$ (2.07)	$ 0.64	$ 0.95
Weighted average number of common shares outstanding:
Basic	4,834	4,555	3,985
Diluted	4,834	4,667	4,081