Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Product revenues	$ 7,429	$ 5,402	$ 12,464	$ 10,762
Service revenues	2,001	1,534	3,546	3,046
Total revenues	9,430	6,936	16,010	13,808
Cost of sales	2,866	2,115	4,838	4,160
Gross profit	6,564	4,821	11,172	9,648
Operating expenses:
Selling, general and administrative	4,683	3,840	8,557	7,466
Research and development	1,644	1,664	3,263	3,322
Total operating expenses	6,327	5,504	11,820	10,788
Operating income (loss)	237	(683)	(648)	(1,140)
Interest expense	(9)	(14)	(21)	(31)
Other income (loss), net		(62)	34	(84)
Income (loss) before taxes	228	(759)	(635)	(1,255)
Income tax (expense) benefit, net	(144)	48	282	(110)
Net income (loss)	$ 84	$ (711)	$ (353)	$ (1,365)
Net income (loss) per share - basic (in Dollars per share)	$ 0.01	$ (0.04)	$ (0.02)	$ (0.09)
Net income (loss) per share - diluted (in Dollars per share)	$ 0.00	$ (0.04)	$ (0.02)	$ (0.09)
Weighted average shares outstanding:
Basic (in Shares)	16,437	15,946	16,325	15,922
Diluted (in Shares)	16,929	15,946	16,325	15,922