CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net revenue:
Products	$ 12,480	$ 15,128	$ 39,056	$ 42,138
Service	4,348	4,298	13,299	12,606
Total net revenue	16,828	19,426	52,355	54,744
Cost of revenue:
Products	5,490	6,618	17,063	19,237
Service	2,161	2,210	6,447	6,710
Total cost of revenue	7,651	8,828	23,510	25,947
Gross profit	9,177	10,598	28,845	28,797
Operating expenses:
Sales and marketing	6,554	7,014	20,180	21,563
Research and development	2,440	2,217	6,778	6,305
General and administrative	2,160	2,475	6,803	8,824
Total operating expenses	11,154	11,706	33,761	36,692
Loss from operations	(1,977)	(1,108)	(4,916)	(7,895)
Interest and other income, net	140	152	350	392
Loss before income taxes	(1,837)	(956)	(4,566)	(7,503)
Provision (benefit) for income taxes	(169)	(64)	(97)	122
Net loss	$ (1,668)	$ (892)	$ (4,469)	$ (7,625)
Net loss per share:
Basic and Diluted (in dollars per share)	$ (0.11)	$ (0.06)	$ (0.31)	$ (0.54)
Weighted-average number of shares used in per share calculations:
Basic and Diluted (in shares)	14,541	14,127	14,558	14,061