CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2010
Consolidated Statements Of Income
Service revenue	$ 78,382	$ 64,998	$ 58,683
Product revenue	7,421	5,165	4,713
Total revenue	85,803	70,163	63,396
Operating expenses:
Cost of service revenue	18,065	14,508	13,599
Cost of product revenue	9,822	8,115	7,257
Research and development	6,745	4,819	5,049
Sales and marketing	37,980	31,744	29,134
General and administrative	6,012	4,733	4,382
Total operating expenses	78,624	63,919	59,421
Income from operations	7,179	6,244	3,975
Other income (loss), net	(305)	138	53
Income (loss) on change in fair value of warrant liability	0	167	(146)
Income before provision (benefit) for income taxes	6,874	6,549	3,882
Provision (benefit) for income taxes	(62,354)	55	3
Net income	$ 69,228	$ 6,494	$ 3,879
Net income per share:
Basic	$ 1.04	$ 0.10	$ 0.06
Diluted	$ 0.99	$ 0.10	$ 0.06
Weighted average number of shares:
Basic	66,413	63,087	62,861
Diluted	70,149	65,873	63,262