Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Revenue	$ 38,145	$ 22,613
Cost of revenue	7,866	4,032
Gross profit	30,279	18,581
Operating expenses:
Research and development	8,754	4,912
Sales and marketing	28,683	18,616
General and administrative	7,984	5,360
Total operating expenses	45,421	28,888
Loss from operations	(15,142)	(10,307)
Other income (expense):
Interest income	141	5
Interest expense	(14)	(15)
Other income (expense), net	(2)	134
Loss before income taxes	(15,017)	(10,183)
Income tax provision	102
Net loss	$ (15,119)	$ (10,183)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.32)	$ (0.65)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	47,190	15,756