CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Statement [Abstract]
Revenues	$ 104,661	$ 90,143	$ 204,098	$ 172,654
Cost of revenue	34,897	41,460	69,362	77,886
Gross profit	69,764	48,683	134,736	94,768
Operating expenses:
Research and development	31,035	26,445	58,024	50,167
Sales and marketing	41,705	45,204	80,332	88,348
General and administrative	24,495	27,262	47,863	52,580
Gains, losses and other items, net	(619)	45	1,376	2,321
Total operating expenses	96,616	98,956	187,595	193,416
Loss from operations	(26,852)	(50,273)	(52,859)	(98,648)
Total other income (expense)	(225)	4,780	238	10,662
Loss from operations before income taxes	(27,077)	(45,493)	(52,621)	(87,986)
Income tax benefit	(3,109)	(5,291)	(6,925)	(5,644)
Net loss	$ (23,968)	$ (40,202)	$ (45,696)	$ (82,342)
Basic loss per share
Basic earnings (loss) per share (in USD per share)	$ (0.36)	$ (0.59)	$ (0.69)	$ (1.21)
Diluted earnings (loss) per share:
Diluted earnings (loss) per share (in USD per share)	$ (0.36)	$ (0.59)	$ (0.69)	$ (1.21)