CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Revenues	$ 380,572	$ 285,620	$ 220,101
Cost of revenue	152,704	120,718	96,396
Gross profit	227,868	164,902	123,705
Operating expenses:
Research and development	105,981	85,697	60,713
Sales and marketing	188,905	158,540	108,639
General and administrative	108,903	98,878	85,154
Gains, losses and other items, net	5,001	19,933	2,723
Total operating expenses	408,790	363,048	257,229
Loss from operations	(180,922)	(198,146)	(133,524)
Total other income	15,385	18,790	502
Loss from continuing operations before income taxes	(165,537)	(179,356)	(133,022)
Income taxes (benefit)	(40,276)	(45,409)	(65,723)
Net loss from continuing operations	(125,261)	(133,947)	(67,299)
Earnings from discontinued operations, net of tax	750	1,162,494	90,779
Net loss	$ (124,511)	$ 1,028,547	$ 23,480
Basic earnings (loss) per share:
Basic earnings (loss) per share from continuing operations (in dollars per share)	$ (1.85)	$ (1.79)	$ (0.85)
Basic earnings (loss) per share from discontinued operations (in dollars per share)	0.01	15.50	1.15
Basic earnings (loss) per share (in dollars per share)	(1.84)	13.71	0.30
Diluted earnings (loss) per share:
Diluted earnings (loss) per share from continuing operations (in dollars per share)	(1.85)	(1.79)	(0.85)
Diluted earnings (loss) per share from discontinued operations (in dollars per share)	0.01	15.50	1.15
Diluted earnings (loss), net per share (in USD per share)	$ (1.84)	$ 13.71	$ 0.30