Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Previously Reported [Member]	Common Stock [Member]	Common Stock [Member] Previously Reported [Member]	Common Stock [Member] Recapitalization [Member]	Preferred Stock [Member] Redeemable Convertible Preferred Stock [Member]	Preferred Stock [Member] Redeemable Convertible Preferred Stock [Member] Previously Reported [Member]	Preferred Stock [Member] Redeemable Convertible Preferred Stock [Member] Recapitalization [Member]	Preferred Stock [Member] Series F-1 [Member]	Additional Paid-in Capital [Member]	Additional Paid-in Capital [Member] Previously Reported [Member]	Additional Paid-in Capital [Member] Recapitalization [Member]	Accumulated Other Comprehensive Income Loss	Accumulated Deficit [Member]	Accumulated Deficit [Member] Previously Reported [Member]
Beginning Balance at Mar. 31, 2020	$ (620,883)	$ (620,883)	$ 9	$ 0	$ 9	$ 755,083	$ 755,083			$ 172,727	$ 172,736	$ (9)		$ (793,619)	$ (793,619)
Beginning Balance, Shares at Mar. 31, 2020			101,652,799	44,318,298	57,334,501	198,274,933	86,443,341	111,831,592
Issuance of common stock upon exercise of stock options	1,139									1,139
Shares Available for Grant, Exercised			676,618
Vesting Early Exercised Stock Options	4,241									4,241
Stock-based compensation expense	11,454									11,454
Net loss	(35,770)													(35,770)
Ending Balance at Jun. 30, 2020	(639,819)		$ 9			$ 755,083				189,561				(829,389)
Ending Balance, Shares at Jun. 30, 2020			102,329,417			198,274,933
Beginning Balance at Mar. 31, 2020	(620,883)	(620,883)	$ 9	$ 0	$ 9	$ 755,083	$ 755,083			172,727	172,736	(9)		(793,619)	(793,619)
Beginning Balance, Shares at Mar. 31, 2020			101,652,799	44,318,298	57,334,501	198,274,933	86,443,341	111,831,592
Vesting Early Exercised Stock Options	14,892
Other comprehensive loss	0
Net loss	(116,606)
Ending Balance at Dec. 31, 2020	(681,372)		$ 9			$ 837,350				228,844				(910,225)
Ending Balance, Shares at Dec. 31, 2020			110,825,480			209,181,855
Beginning Balance at Jun. 30, 2020	(639,819)		$ 9			$ 755,083				189,561				(829,389)
Beginning Balance, Shares at Jun. 30, 2020			102,329,417			198,274,933
Issuance of common stock upon exercise of stock options	827									827
Shares Available for Grant, Exercised			437,913
Issuance of common stock related to early exercise of stock options, shares			6,881,095
Vesting Early Exercised Stock Options	4,241									4,241
Stock-based compensation expense	10,964									10,964
Net loss	(36,191)													(36,191)
Ending Balance at Sep. 30, 2020	(659,978)		$ 9			$ 755,083				205,593				(865,580)
Ending Balance, Shares at Sep. 30, 2020			109,648,425			198,274,933
Issuance of common stock upon exercise of stock options	1,746									1,746
Shares Available for Grant, Exercised			1,177,055
Issuance of Series F-1 preferred stock, net of issuance costs									$ 82,267
Issuance of Series F-1 preferred stock, net of issuance costs, Shares									10,906,922
Vesting Early Exercised Stock Options	6,410									6,410
Stock-based compensation expense	15,095									15,095
Other comprehensive loss	0
Net loss	(44,645)													(44,645)
Ending Balance at Dec. 31, 2020	(681,372)		$ 9			$ 837,350				228,844				(910,225)
Ending Balance, Shares at Dec. 31, 2020			110,825,480			209,181,855
Beginning Balance at Mar. 31, 2021	(595,619)	(595,619)	$ 12	$ 0	$ 12	$ 837,351	$ 837,351			381,607	381,619	(12)		(977,238)	(977,238)
Beginning Balance, Shares at Mar. 31, 2021			124,529,784	54,292,140	70,237,644	209,181,855	91,198,378	117,983,477
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, net of transaction costs and Merger warrant liability	200,579		$ 5							200,574
Issuance Of Common Stock Upon Merger And Merger Warrant Liability Shares			46,901,747
Issuance of PIPE shares	250,000		$ 3							249,997
Issuance of PIPE shares, shares			25,000,000
Issuance of common stock upon exercise of stock options	2,553									2,553
Shares Available for Grant, Exercised			818,479
Stock-based compensation expense	9,704									9,704
Net loss	(42,026)													(42,026)
Ending Balance at Jun. 30, 2021	662,542		$ 41			$ 0				1,681,765				(1,019,264)
Ending Balance, Shares at Jun. 30, 2021			406,431,865			0
Beginning Balance at Mar. 31, 2021	$ (595,619)	$ (595,619)	$ 12	$ 0	$ 12	$ 837,351	$ 837,351			381,607	$ 381,619	$ (12)		(977,238)	$ (977,238)
Beginning Balance, Shares at Mar. 31, 2021			124,529,784	54,292,140	70,237,644	209,181,855	91,198,378	117,983,477
Shares Available for Grant, Exercised	3,945,200
Other comprehensive loss	$ (36)
Net loss	(147,946)
Ending Balance at Dec. 31, 2021	961,174		$ 44			$ 0				2,086,350			$ (36)	(1,125,184)
Ending Balance, Shares at Dec. 31, 2021			446,147,181			0
Beginning Balance at Jun. 30, 2021	662,542		$ 41			$ 0				1,681,765				(1,019,264)
Beginning Balance, Shares at Jun. 30, 2021			406,431,865			0
Issuance of common stock upon exercise of stock options	2,905									2,905
Shares Available for Grant, Exercised			736,717
Stock-based compensation expense	10,588									10,588
Net loss	(16,524)													(16,524)
Ending Balance at Sep. 30, 2021	659,511		$ 41			$ 0				1,695,258				(1,035,788)
Ending Balance, Shares at Sep. 30, 2021			407,168,582			0
Issuance of common stock for acquisition of business	322,845		$ 3							322,842
Issuance of common stock for acquisition of business, Shares			30,572,268
Issuance of Common Stock for Class A Common Stock Warrant Exercise	42,354									42,354
Issuance of Common Stock for Class A Common Stock Warrant Exercise, Shares			6,016,327
Issuance of common stock upon exercise of stock options	8,308									8,308
Shares Available for Grant, Exercised			2,390,004
Stock-based compensation expense	17,588									17,588
Other comprehensive loss	(36)												(36)
Net loss	(89,396)													(89,396)
Ending Balance at Dec. 31, 2021	$ 961,174		$ 44			$ 0				$ 2,086,350			$ (36)	$ (1,125,184)
Ending Balance, Shares at Dec. 31, 2021			446,147,181			0