CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($) $ in Thousands	Total	ASC 842 lease accounting adoption	Common stock	Additional paid in capital	Accumulated deficit	Accumulated deficit ASC 842 lease accounting adoption	Preferred stock	FF Preferred Stock	Common stock – Class A	Common stock – Class B	Previously Reported	Previously Reported Common stock	Previously Reported Additional paid in capital	Previously Reported Accumulated deficit	Previously Reported Preferred stock	Previously Reported FF Preferred Stock	Previously Reported Common stock – Class A	Previously Reported Common stock – Class B	Retroactive application of recapitalization Common stock	Retroactive application of recapitalization Additional paid in capital	Retroactive application of recapitalization Preferred stock	Retroactive application of recapitalization FF Preferred Stock	Retroactive application of recapitalization Common stock – Class A	Retroactive application of recapitalization Common stock – Class B
Beginning balance (in shares) at Dec. 31, 2019							0	0	0	0					144,875,941	20,000,000	15,493,658	80,000,000			(144,875,941)	(20,000,000)	(15,493,658)	(80,000,000)
Beginning balance (in shares) at Dec. 31, 2019			64,244,007									0							64,244,007
Beginning balance at Dec. 31, 2019	$ 14,698	$ (4)	$ 1	$ 37,004	$ (22,307)	$ (4)					$ 14,698	$ 0	$ 37,004	$ (22,307)					$ 1	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			177,345
Issuance of common stock upon exercise of stock options	7			7
Stock-based compensation – Stock options and RSAs	102			102
Stock contribution from co-founder (in shares)			2,467,415
Net income (loss)	(6,255)				(6,255)
Ending balance (in shares) at Mar. 31, 2020			61,953,937
Ending balance at Mar. 31, 2020	8,547		$ 1	37,112	(28,566)
Beginning balance (in shares) at Dec. 31, 2019							0	0	0	0					144,875,941	20,000,000	15,493,658	80,000,000			(144,875,941)	(20,000,000)	(15,493,658)	(80,000,000)
Beginning balance (in shares) at Dec. 31, 2019			64,244,007									0							64,244,007
Beginning balance at Dec. 31, 2019	14,698	$ (4)	$ 1	37,004	(22,307)	$ (4)					14,698	$ 0	37,004	(22,307)					$ 1	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(126,329)
Ending balance (in shares) at Sep. 30, 2020			62,384,407
Ending balance at Sep. 30, 2020	(109,932)		$ 1	38,707	(148,640)
Beginning balance (in shares) at Mar. 31, 2020			61,953,937
Beginning balance at Mar. 31, 2020	8,547		$ 1	37,112	(28,566)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			17,956
Issuance of common stock upon exercise of stock options	5			5
Stock-based compensation – Stock options and RSAs	167			167
Net income (loss)	(9,152)				(9,152)
Ending balance (in shares) at Jun. 30, 2020			61,971,893
Ending balance at Jun. 30, 2020	(432)		$ 1	37,285	(37,718)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			412,514
Issuance of common stock upon exercise of stock options	49			49
Stock-based compensation – Stock options and RSAs	1,374			1,374
Net income (loss)	(110,923)				(110,923)
Ending balance (in shares) at Sep. 30, 2020			62,384,407
Ending balance at Sep. 30, 2020	(109,932)		$ 1	38,707	(148,640)
Beginning balance (in shares) at Dec. 31, 2020							0	0	0	0					144,875,941	20,000,000	18,398,005	70,000,000			(144,875,941)	(20,000,000)	(18,398,005)	(70,000,000)
Beginning balance (in shares) at Dec. 31, 2020			62,510,690									0							62,510,690
Beginning balance at Dec. 31, 2020	(289,472)		$ 1	39,866	(329,338)						(289,472)	$ 0	39,866	(329,338)					$ 1	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			270,582
Issuance of common stock upon exercise of stock options	24		$ 0	24
Stock-based compensation – Stock options and RSAs	5,768			5,768
Net income (loss)	64,671				64,671
Ending balance (in shares) at Mar. 31, 2021			62,781,272
Ending balance at Mar. 31, 2021	(219,009)		$ 1	45,658	(264,667)
Beginning balance (in shares) at Dec. 31, 2020							0	0	0	0					144,875,941	20,000,000	18,398,005	70,000,000			(144,875,941)	(20,000,000)	(18,398,005)	(70,000,000)
Beginning balance (in shares) at Dec. 31, 2020			62,510,690									0							62,510,690
Beginning balance at Dec. 31, 2020	$ (289,472)		$ 1	39,866	(329,338)						$ (289,472)	$ 0	$ 39,866	$ (329,338)					$ 1	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	1,297,711
Net income (loss)	$ 123,384
Ending balance (in shares) at Sep. 30, 2021			80,580,232
Ending balance at Sep. 30, 2021	127,518		$ 1	333,471	(205,954)
Beginning balance (in shares) at Mar. 31, 2021			62,781,272
Beginning balance at Mar. 31, 2021	(219,009)		$ 1	45,658	(264,667)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			39,515
Issuance of common stock upon exercise of stock options	11			11
Stock-based compensation – Stock options and RSAs	2,344			2,344
Share repurchase (in shares)			(25,601,733)
Share repurchase	(22,000)		$ 0	(22,000)
Net income (loss)	64,327				64,327
Ending balance (in shares) at Jun. 30, 2021			37,219,054
Ending balance at Jun. 30, 2021	(174,326)		$ 0	26,013	(200,340)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			966,827
Issuance of common stock upon exercise of stock options	239		$ 0	239
Stock-based compensation – Stock options and RSAs	3,075			3,075
Share repurchase	(18,000)			(18,000)
Warrant conversion upon exercise (in shares)			638,125
Warrant conversion upon exercise	7,001		$ 0	7,001
Shares issued upon conversion of SAFE Notes (in shares)			12,403,469
Shares issued upon conversion of SAFE Notes	136,001		$ 0	136,001
Issuance of common stock and warrants, in connection with PIPE (in shares)			11,000,000
Issuance of common stock and warrants, in connection with PIPE	79,529		$ 0	79,529
Issuance of common stock and warrants, net of transaction costs, upon merger (in shares)			18,352,757
Issuance of common stock and warrants, net of transaction costs, upon merger	99,612		$ 0	99,612
Net income (loss)	(5,614)				(5,614)
Ending balance (in shares) at Sep. 30, 2021			80,580,232
Ending balance at Sep. 30, 2021	$ 127,518		$ 1	$ 333,471	$ (205,954)