CONDENSED CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Condensed Consolidated Statements Of Income
Service revenue	$ 27,252	$ 23,172
Product revenue	2,752	2,080
Total revenue	30,004	25,252
Operating expenses:
Cost of service revenue	5,221	5,686
Cost of product revenue	3,347	2,710
Research and development	2,336	1,826
Sales and marketing	13,121	10,541
General and administrative	2,790	2,064
Gain on patent sale	0	(11,965)
Total operating expenses	26,815	10,862
Income from operations	3,189	14,390
Other income, net	15	8
Income before provision for income taxes	3,204	14,398
Provision for income taxes	1,065	5,781
Net income	$ 2,139	$ 8,617
Net income per share:
Basic	$ 0.03	$ 0.12
Diluted	$ 0.03	$ 0.12
Weighted average number of shares:
Basic	72,510	70,717
Diluted	75,756	74,110