Fair Value of Financial Instruments (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2021

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table provides information by level for the Company’s assets and liabilities that were measured at fair value on a recurring basis (in thousands):

	March 31, 2021
	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	6,493	$	—	$	—	$	6,493
Total financial assets	$	6,493	$	—	$	—	$	6,493
Liabilities
Warrant liabilities	$	—	$	—	$	14,725	$	14,725
Total financial liabilities	$	—	$	—	$	14,725	$	14,725

	December 31, 2020
	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	10,493	$	—	$	—	$	10,493
Total financial assets	$	10,493	$	—	$	—	$	10,493
Liabilities
Warrant liabilities	$	—	$	—	$	49,293	$	49,293
Total financial liabilities	$	—	$	—	$	49,293	$	49,293

Schedule of Changes in Fair Value of Level 3 Financial Instruments

The following table presents a summary of the changes in the fair value of the Company’s Level 3 financial instruments (in thousands):

	Redeemable Convertible Preferred Stock Warrant Liability			Private Placement Warrant Liability			Derivative Liability
Fair value as of January 1, 2020	$	(162	)	$	—		$	—
Change in the fair value included in other income (expense), net		—			—			(5,308	)
Fair value as of March 31, 2020		(162	)		—			(5,308	)
	Redeemable Convertible Preferred Stock Warrant Liability			Private Placement Warrant Liability			Derivative Liability
Fair value as of January 1, 2021		(49,293	)		—			—
Private placement warrant liability acquired as part of the merger		—			(19,377	)		—
Change in the fair value included in other income (expense), net		(8,804	)		4,652			—
Issuance of preferred stock upon exercise of warrants		58,097			—			—
Fair value as of March 31, 2021	$	—		$	(14,725	)	$	—

The following table presents a summary of the changes in the fair value of the Company’s Level 3 financial instruments (in thousands):

	Redeemable Convertible Preferred Stock Warrant Liability			Redeemable Convertible Preferred Stock Tranche Liability			Derivative liability
Fair value as of January 1, 2019	$	(115	)	$	—		$	—
Recognition of preferred stock warrant liability upon subsequent issuance of warrants		(53	)		—			—
Change in the fair value included in other income (expense), net		6			—			—
Fair value as of December 31, 2019		(162	)		—			—
Recognition of preferred stock warrant and tranche liability upon issuance		(691	)		(1,610	)		—
Change in the fair value included in other income (expense), net		(48,440	)		—			(5,308	)
Extinguishment of derivative liability upon conversion of convertible notes								5,308
Settlement of redeemable convertible preferred stock tranche liability due to the issuance of Series B redeemable convertible preferred stock, included in other income (expense), net		—			1,610			—
Fair value as of December 31, 2020	$	(49,293	)	$	—		$	—