Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Revenue
Product	$ 14,637	$ 11,636
Service	8,482	6,687
Total revenue	23,119	18,323
Cost of revenue
Product	5,429	3,652
Service	3,569	3,162
Total cost of revenue	8,998	6,814
Gross profit	14,121	11,509
Operating expenses
Research and development	2,511	2,158
Sales and marketing	7,530	6,473
General and administrative	3,087	2,239
Total operating expenses	13,128	10,870
Income from operations	993	639
Interest income	12	5
Interest expense and other finance charges	(71)	(61)
Other income (expense), net	(1,597)	(465)
Income (loss) before income taxes	(663)	118
Benefit from (provision for) income taxes	(173)	37
Net income (loss)	$ (836)	$ 155
Net income (loss) per common share
Basic and diluted	$ (0.23)	$ 0.00
Weighted average shares used to compute net income (loss) per common share
Basic	3,661	2,943
Diluted	3,661	4,918