Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Income Statement [Abstract]
Revenue	$ 78,404	$ 58,158
Cost of revenue	20,976	15,252
Gross profit	57,428	42,906
Operating expenses
Research and development	13,100	7,921
Sales and marketing	34,203	27,559
General and administrative	12,214	8,537
Total operating expenses	59,517	44,017
Loss from operations	(2,089)	(1,111)
Other income (expense)
Interest income	444	239
Interest expense	(527)	(31)
Foreign exchange expense and other, net	(441)	(540)
Total other income (expense), net	(524)	(332)
Loss before income taxes	(2,613)	(1,443)
Provision for income taxes	858	457
Net loss	$ (3,471)	$ (1,900)
Net loss per ordinary share
Basic and diluted	$ (0.06)	$ (0.03)
Weighted-average number of ordinary shares outstanding:
Basic and diluted	59,175	56,292