Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Revenue	$ 58,607	$ 38,145
Cost of revenue	11,655	7,866
Gross profit	46,952	30,279
Operating expenses:
Research and development	15,969	8,754
Sales and marketing	38,786	28,683
General and administrative	10,236	7,984
Total operating expenses	64,991	45,421
Loss from operations	(18,039)	(15,142)
Other income (expense):
Interest income	221	141
Interest expense	(21)	(14)
Other expense, net	(111)	(2)
Loss before income taxes	(17,950)	(15,017)
Income tax provision	121	102
Net loss	$ (18,071)	$ (15,119)
Net loss per share, basic and diluted	$ (0.36)	$ (0.32)
Weighted-average shares used to compute net loss per share, basic and diluted	50,224	47,190