Unaudited Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net revenues
Licenses	$ 1,137	$ 1,079	$ 1,976	$ 2,006
Services	2,392	2,293	4,727	4,612
Total net revenues	3,529	3,372	6,703	6,618
Operating Expenses [Abstract]
Cost of license revenues	4	4	6	6
Cost of service revenues	482	440	959	851
Selling and marketing	1,201	1,147	2,560	2,308
Research and development	1,384	1,496	2,868	3,002
General and administrative	880	926	1,973	2,065
Total operating expenses	3,951	4,013	8,366	8,232
Operating loss	(422)	(641)	(1,663)	(1,614)
Other income (expense)
Interest expense-net	0	(1)	2	(1)
Other income (expense)-net	(38)	34	(29)	(12)
Total other income (expense)	(38)	33	(27)	(13)
Loss before income taxes	(460)	(608)	(1,690)	(1,627)
Income tax provision	68	97	177	117
Net loss	$ (528)	$ (705)	$ (1,867)	$ (1,744)
Basic and diluted net loss per share	$ (0.02)	$ (0.03)	$ (0.07)	$ (0.06)
Shares used in computing basic and diluted net loss per share	28,134	27,986	28,128	27,959