Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues:
Product revenue	$ 16,647	$ 16,996	$ 50,534	$ 47,890
Service and other revenue	2,964	3,612	10,534	9,262
Total revenue	19,611	20,608	61,068	57,152
Cost of goods sold:
Cost of product revenue	12,254	13,112	35,608	35,625
Cost of service and other revenue	1,742	2,649	6,766	7,337
Total cost of goods sold	13,996	15,761	42,374	42,962
Gross profit	5,615	4,847	18,694	14,190
Operating expenses:
Research and development	1,325	1,272	4,045	3,279
Selling and marketing	3,447	3,527	10,891	10,397
General and administrative	1,691	1,280	5,175	4,083
Total operating expenses	6,463	6,079	20,111	17,759
Operating loss	(848)	(1,232)	(1,417)	(3,569)
Interest expense, net	(80)	(68)	(246)	(149)
Other income (expense), net	81	8	159	(34)
Net loss	(847)	(1,292)	(1,504)	(3,752)
Net loss per share, basic and diluted (in dollars per share)	$ (0.01)	$ (0.02)	$ (0.02)	$ (0.05)
Shares used in computing net loss per share, basic and diluted (in shares)	95,575	80,119	91,998	79,990
Comprehensive loss:
Net loss	(847)	(1,292)	(1,504)	(3,752)
Translation gain (loss) on subsidiaries denominated in foreign currencies	211	(193)	(99)	416
Comprehensive loss	$ (636)	$ (1,485)	$ (1,603)	$ (3,336)