SEGMENT AND GEOGRAPHIC INFORMATION - Summary of Total Revenue by Geography (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Total revenue	$ 272,048	$ 261,110	$ 541,000	$ 361,853
United States
Segment Reporting Information [Line Items]
Total revenue	182,698	195,169	355,470	273,442
Europe
Segment Reporting Information [Line Items]
Total revenue	40,674	35,631	82,529	48,238
Asia
Segment Reporting Information [Line Items]
Total revenue	22,326	14,180	49,169	17,712
Rest of the world
Segment Reporting Information [Line Items]
Total revenue	$ 26,350	$ 16,130	$ 53,832	$ 22,461