Condensed Consolidated Statements Of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock [Member]	Preferred Stock [Member] Redeemable Convertible Preferred Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income Loss	Accumulated Deficit [Member]
Beginning Balance at Mar. 31, 2021	$ (595,619)	$ 12	$ 837,351	$ 381,607		$ (977,238)
Beginning Balance, Shares at Mar. 31, 2021		124,529,784	209,181,855
Preferred stock conversion	837,351	$ 21	$ (837,351)	837,330
Preferred stock conversion, shares		209,181,855	(209,181,855)
Issuance of common stock upon Merger	200,579	$ 5		200,574
Issuance of common stock upon Merger, Shares		46,901,747
Issuance of Private Investment in Public Equity ("PIPE") shares	250,000	$ 3		249,997
Issuance of Private Investment in Public Equity ("PIPE") shares, shares		25,000,000
Issuance of common stock upon exercise of stock options	2,553			2,553
Issuance of common stock upon exercise of stock options, Shares		818,479
Stock-based compensation expense	9,704			9,704
Other comprehensive loss	0
Net loss	(42,026)					(42,026)
Ending Balance at Jun. 30, 2021	662,542	$ 41		1,681,765		(1,019,264)
Ending Balance, Shares at Jun. 30, 2021		406,431,865
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 upon exercise of stock options	$ 1,533			1,533
Issuance of common stock upon exercise of stock options, Shares	1,065,784	1,065,784
Issuance of common stock upon release of RSUs, shares		1,461,448
Net share settlements for stock-based minimum tax withholdings		(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