Revenue by Geographic Location - Schedule of Revenue by Geographic Areas (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Segment Reporting Information [Line Items]
Total revenue	$ 84,685	$ 63,440	$ 164,783	$ 122,047
Other
Segment Reporting Information [Line Items]
Total revenue	4,827	3,627	9,384	6,955
United States
Segment Reporting Information [Line Items]
Total revenue	58,020	42,912	112,799	82,722
EMEA
Segment Reporting Information [Line Items]
Total revenue	15,625	12,078	30,493	23,007
APAC
Segment Reporting Information [Line Items]
Total revenue	$ 6,213	$ 4,823	$ 12,107	$ 9,363