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, shares		(14,036)
Stock-based compensation expense	25,915		25,915
Other comprehensive income (loss)	624			624
Net loss attributable to common stockholders	(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, 2022	915,656	$ 45	2,110,160	179	(1,194,728)
Beginning Balance, Shares at Mar. 31, 2022		448,812,321
Other comprehensive income (loss)	1,453
Net loss attributable to common stockholders	(155,597)
Ending Balance at Sep. 30, 2022	819,320	$ 45	2,167,968	1,632	(1,350,325)
Ending Balance, Shares at Sep. 30, 2022		455,453,036
Beginning Balance at Jun. 30, 2022	854,196	$ 45	2,137,608	803	(1,284,260)
Beginning Balance, Shares at Jun. 30, 2022		451,325,517
Issuance of common stock upon exercise of stock options	2,498		2,498
Issuance of common stock upon exercise of stock options, Shares		1,430,629
Issuance Of Common Stock Upon Release Of Rsus	(66,065)
Issuance of common stock upon release of restricted stock units, shares		1,580,591
Net share settlements for stock-based minimum tax withholdings, shares		(14,038)
Net share settlements for stock-based minimum tax withholdings, value	(86)		(86)
Issuance of common stock under employee stock purchase plan, share		1,130,337
Issuance of common stock under employee stock purchase plan, value	3,238		3,238
Stock-based compensation expense	24,710		24,710
Other comprehensive income (loss)	829			829
Net loss attributable to common stockholders	(66,065)				(66,065)
Ending Balance at Sep. 30, 2022	819,320	$ 45	2,167,968	1,632	(1,350,325)
Ending Balance, Shares at Sep. 30, 2022		455,453,036
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
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, shares		(58,985)
Net share settlements for stock-based minimum tax withholdings, value	(121)		(121)
Stock-based compensation expense	47,915		47,915
Other comprehensive income (loss)	(334)			(334)
Net loss attributable to common stockholders	(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
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, shares	1,009,279
Other comprehensive income (loss)	$ 620
Net loss attributable to common stockholders	(179,894)
Ending Balance at Sep. 30, 2023	625,251	$ 48	2,311,481	(0)	(1,686,278)
Ending Balance, Shares at Sep. 30, 2023		478,830,999
Beginning Balance at Jun. 30, 2023	675,490	$ 47	2,287,405	(954)	(1,611,008)
Beginning Balance, Shares at Jun. 30, 2023		472,095,550
Issuance of common stock upon exercise of stock options		$ 1	(1)
Issuance of common stock related to early exercise of stock options	388		388
Issuance of common stock related to early exercise of stock options, shares		828,561
Issuance of common stock upon release of restricted stock units, shares		4,358,378
Issuance of common stock upon release of restricted stock units under the 2022 Annual Incentive Plan (Shares)		57,996
Issuance of common stock upon release of restricted stock units under the 2022 Annual Incentive Plan	102	$ 0	102
Net share settlements for stock-based minimum tax withholdings, shares		(19,022)
Net share settlements for stock-based minimum tax withholdings, value	(22)		(22)
Issuance of common stock under employee stock purchase plan, share		1,509,536
Issuance of common stock under employee stock purchase plan, value	1,411		1,411
Stock-based compensation expense	22,198		22,198
Other comprehensive income (loss)	954			954
Net loss attributable to common stockholders	(75,270)				(75,270)
Ending Balance at Sep. 30, 2023	$ 625,251	$ 48	$ 2,311,481	$ (0)	$ (1,686,278)
Ending Balance, Shares at Sep. 30, 2023		478,830,999