Condensed Consolidated Statements Of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income Loss	Accumulated Deficit [Member]
Beginning Balance at Mar. 31, 2022	$ 915,656	$ 45	$ 2,110,160	$ 179	$ (1,194,728)
Beginning Balance, Shares at Mar. 31, 2022		448,812,321
Issuance of common stock related to early exercise of stock options	1,533		1,533
Issuance of common stock related to early exercise of stock options, shares		1,065,784
Issuance of common stock upon release of restricted stock units, shares		1,461,448
Net share settlements for stock-based minimum tax withholdings, value		(14,036)
Stock-based compensation expense	25,915		25,915
Other comprehensive loss	624			624
Net loss	(89,532)				(89,532)
Ending Balance at Jun. 30, 2022	854,196	$ 45	2,137,608	803	(1,284,260)
Ending Balance, Shares at Jun. 30, 2022		451,325,517
Beginning Balance at Mar. 31, 2023	713,939	$ 46	2,220,897	(620)	(1,506,384)
Beginning Balance, Shares at Mar. 31, 2023		461,199,962
Issuance of common stock related to early exercise of stock options	$ 85		85
Issuance of common stock related to early exercise of stock options, shares	180,718	180,718
Issuance of common stock upon release of restricted stock units, shares		1,812,802
Issuance of common stock upon release of restricted stock units under the 2022 Annual Incentive Plan (Shares)		8,961,053
Issuance of common stock upon release of restricted stock units under the 2022 Annual Incentive Plan	$ 18,630	$ 1	18,629
Net share settlements for stock-based minimum tax withholdings, value		(58,985)
Net share settlements for stock-based minimum tax withholdings, shares	(121)		(121)
Stock-based compensation expense	47,915		47,915
Other comprehensive loss	(334)			(334)
Net loss	(104,624)				(104,624)
Ending Balance at Jun. 30, 2023	$ 675,490	$ 47	$ 2,287,405	$ (954)	$ (1,611,008)
Ending Balance, Shares at Jun. 30, 2023		472,095,550