CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Total revenue	$ 156,874	$ 136,685	$ 456,758	$ 387,625
Operating Expenses [Abstract]
Research and development	27,911	23,702	81,801	66,763
Sales and marketing	76,797	63,986	229,438	185,535
General and administrative	29,950	23,844	80,064	72,403
Total operating expenses	194,492	171,940	570,360	493,738
Loss from operations	(37,618)	(35,255)	(113,602)	(106,113)
Other expense, net	(5,866)	(4,669)	(15,623)	(13,772)
Loss before provision for income taxes	(43,484)	(39,924)	(129,225)	(119,885)
Provision for income taxes	87	301	576	666
Net loss	$ (43,571)	$ (40,225)	$ (129,801)	$ (120,551)
Net loss per share:
Basic (in dollars per share)	$ (0.38)	$ (0.38)	$ (1.16)	$ (1.15)
Diluted (in dollars per share)	$ (0.38)	$ (0.38)	$ (1.16)	$ (1.15)
Weighted-average common shares outstanding:
Basic (in shares)	113,510	106,641	111,960	104,961
Diluted (in shares)	113,510	106,641	111,960	104,961
Service
Total revenue	$ 149,396	$ 127,107	$ 429,568	$ 362,232
Operating Expenses [Abstract]
Cost of revenue	48,763	47,044	141,971	132,843
Other
Total revenue	7,478	9,578	27,190	25,393
Operating Expenses [Abstract]
Cost of revenue	$ 11,071	$ 13,364	$ 37,086	$ 36,194