Consolidated Statements of Temporary Equity and Stockholders’ Equity (Deficit) - USD ($) $ in Thousands	Total	Preferred Stock Series A Convertible Preferred	Preferred Stock Series B Convertible Preferred	Preferred Stock Founders Convertible Preferred	Common Stock Class A Common Stock	Common Stock Class B Common Stock	Additional Paid-in Capital	Receivable For Warrant Exercises	Accumulated deficit
Beginning Balance (in shares) at Dec. 31, 2018		16,983,241	3,765,685	27,162,191	93,090	105,191,937
Beginning Balance at Dec. 31, 2018	$ (6,358)	$ 4,634	$ 6,386	$ 0	$ 0	$ 1	$ 662	$ 0	$ (7,021)
Stock-based compensation	86						86
Exercise of stock options (in shares)					117,773
Exercise of stock options	8						8
Net loss	(10,879)								(10,879)
Ending Balance at Dec. 31, 2019	(17,143)	$ 4,634	$ 6,386	$ 0	$ 0	$ 1	756	0	(17,900)
Ending Balance (in shares) at Dec. 31, 2019		16,983,241	3,765,685	27,162,191	210,863	105,191,937
Stock-based compensation	$ 711						711
Exercise of stock options (in shares)	153,451				153,451
Exercise of stock options	$ 87						87
Merger recapitalization (in shares)		(16,983,241)	(3,765,685)	(27,162,191)	20,748,926	27,162,191
Merger recapitalization	11,020	$ (4,634)	$ (6,386)				11,020
Merger recapitalization attributed to warrants liability	(62,739)						(62,739)
Spartan Shares Recapitalized, Net of Redemptions and Equity Issuance Costs of $72,463 (in shares)					116,547,115
Spartan Shares Recapitalized, Net of Redemptions and Equity Issuance Costs of $72,463	976,023				$ 1		976,022
Conversion of Bridge Notes to Class A (in shares)					1,361,268
Conversion of Bridge Notes to Class A	11,487						11,487
Conversion of Convertible Security (in shares)					5,882,352
Conversion of Convertible Security	59,647						59,647
Exercise of warrants (in shares)					8,387
Exercise of warrants	0						96	(96)
Net loss	(130,004)								(130,004)
Recognition of Magna warrants	58,041						58,041
Ending Balance at Dec. 31, 2020	907,130	$ 0	$ 0	$ 0	$ 1	$ 1	1,055,128	(96)	(147,904)
Ending Balance (in shares) at Dec. 31, 2020		0	0	0	144,912,362	132,354,128
Stock-based compensation	$ 5,622						5,622
Exercise of stock options (in shares)	1,532,002				1,656,424
Exercise of stock options	$ 403						403
Spartan Shares Recapitalized, Net of Redemptions and Equity Issuance Costs of $72,463					$ 1
Receivable for warrant exercises collected	459							459
Exercise of warrants (in shares)					27,751,587
Exercise of warrants	365,080						365,464	(385)
Shares surrender upon exercise of warrants (in shares)					(9,943,067)
Shares surrendered upon exercise of warrants	0
Net loss	(471,341)								(471,341)
Stock issuance costs and redemption payments	0						(22)	22
Purchase of capped call option	(96,788)						(96,788)
Recognition of Magna warrants	89,477						89,477
Ending Balance at Dec. 31, 2021	$ 800,042	$ 0	$ 0	$ 0	$ 2	$ 1	$ 1,419,284	$ 0	$ (619,245)
Ending Balance (in shares) at Dec. 31, 2021		0	0	0	164,377,306	132,354,128