Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Product revenues	$ 5,361	$ 5,309	$ 17,825	$ 16,071
Service revenues	2,109	1,575	5,655	4,621
Total revenues	7,470	6,884	23,480	20,692
Cost of sales	2,313	2,124	7,151	6,284
Gross profit	5,157	4,760	16,329	14,408
Operating expenses:
Selling, general and administrative	4,270	3,754	12,827	11,220
Research and development	1,753	1,676	5,016	4,998
Total operating expenses	6,023	5,430	17,843	16,218
Operating loss	(866)	(670)	(1,514)	(1,810)
Interest expense	(8)	(14)	(29)	(45)
Other (expense) income, net	(14)	74	20	(10)
Loss before taxes	(888)	(610)	(1,523)	(1,865)
Income tax (expense) benefit, net	(2,604)	128	(2,322)	18
Net loss	$ (3,492)	$ (482)	$ (3,845)	$ (1,847)
Net loss per share:
Basic (in Dollars per share)	$ (0.21)	$ (0.03)	$ (0.23)	$ (0.12)
Diluted (in Dollars per share)	$ (0.21)	$ (0.03)	$ (0.23)	$ (0.12)
Weighted average shares outstanding:
Basic (in Shares)	16,558	15,994	16,404	15,946
Diluted (in Shares)	16,558	15,994	16,404	15,946