Fair Value Measurements (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2022

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of financial instruments that are measured or disclosed at fair value

	Fair Value Measurements as of September 30, 2022
	Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	166	$	—	$	—
Total	$	166	$	—	$	—

	Fair Value Measurements as of December 31, 2021
	Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	4,863	$	—	$	—
Liabilities:
Derivative liability		—		—		(3,488	)
Total	$	4,863	$	—	$	(3,488	)

	Fair Value Measurements as of December 31, 2021
	Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	4,863	$	—	$	—
Liabilities:
Derivative liability		—		—		(3,488	)
Warrant liability		—		—		—
Total	$	4,863	$	—	$	(3,488	)

	Fair Value Measurements as of December 31, 2020
	Level 1		Level 2		Level 3
Assets:
Cash equivalents	$	35,856	$	—	$	—
Liabilities:
Derivative liability		—		—		(2,380	)
Warrant liability		—		—		(2,004	)
Total	$	35,856	$	—	$	(4,384	)

Schedule of company determined the fair value of the series C preferred stock warrants using the black-scholes

	September 30, 2021
Expected dividend rate	0	%
Risk-free interest rate	0.26	%
Expected volatility	44	%
Expected term (in years)	1.89

SVB March 2021 Note Common Stock Warrants
Expected dividend rate	0	%
Risk-free interest rate	1.74	%
Expected volatility	47	%
Expected term (in years)	10.00

SCI June 2021 Note Common Stock Warrants
Expected dividend rate	0	%
Risk-free interest rate	1.51	%
Expected volatility	47	%
Expected term (in years)	10.00

	December 31, 2020
Expected dividend rate	0	%
Risk-free interest rate	0.14	%
Expected volatility	48	%
Expected term (in years)	2.16

	December 31, 2020
Expected dividend rate	0	%
Risk-free interest rate	0.16	%
Expected volatility	47	%
Expected term (in years)	2.87

SVB March 2021 Note Common Stock Warrants
Expected dividend rate	0	%
Risk-free interest rate	1.74	%
Expected volatility	47	%
Expected term (in years)	10.00

SCI June 2021 Note Common Stock Warrants
Expected dividend rate	0	%
Risk-free interest rate	1.51	%
Expected volatility	47	%
Expected term (in years)	10.00

Schedule to determine the fair value of the embedded derivative

	December 31, 2021
Probability of Next Equity Financing	3	%
Probability of SPAC/PIPE	95	%
Probability of IPO	2	%
	100	%
Weighted average term (years)	0.27
Weighted average discount rate	25.00	%

	December 31, 2021		December 31, 2020
Probability of Next Equity Financing	3	%	65	%
Probability of SPAC/PIPE	95	%	33	%
Probability of IPO	2	%	2	%
	100	%	100	%
Weighted average term (years)	0.27		0.26
Weighted average discount rate	25.00	%	8.63	%

Schedule of changes in fair value of the company’s derivative liability and warrant liability

	Derivative Liability		Warrant Liability
Balance as of December 31, 2020	$	2,380	$	2,004
Change in fair value		1,090		2,701
Balance as of September 30, 2021	$	3,470	$	4,705

	Derivative Liability			Warrant Liability
Balance as of December 31, 2021	$	3,488		$	—
Change in fair value		606			—
Extinguishment of embedded derivative upon conversion of convertible note		(4,094	)		—
Balance as of September 30, 2022	$	—		$	—

	Derivative Liability			Warrant Liability
Balance as of January 1, 2020	$	—		$	3,348
Initial fair value of derivative liability		6,481			—
Extinguishment of derivative liability		(5,360	)		—
Exercise of warrants		—			(1,931	)
Change in fair value		1,259			587
Balance as of December 31, 2020		2,380			2,004
Change in fair value		1,108			3,812
Exercise of warrants		—			(5,816	)
Balance as of December 31, 2021	$	3,488		$	—

Schedule of fair value remeasurement of embedded derivative

	Three Months Ended September 30,					Nine Months Ended September 30,
	2022		2021			2022			2021
Remeasurement of conversion feature – loss	$	—	$	(640	)	$	(606	)	$	(1,090	)