Fair Value of Financial Assets and Liabilities (Tables)

3 Months Ended

9 Months Ended

Sep. 30, 2021

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value

The following tables present information about the Company’s financial assets and liabilities measured at fair value on a recurring basis and indicate the level of the fair value hierarchy used to determine such fair values:

	Fair Value Measurements as of September 30, 2021 Using:
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents—money market funds	$	34,816	$	27,788	$	—	$	62,604
	$	34,816	$	27,788	$	—	$	62,604
Liabilities:
Embedded derivative liability	$	—	$	—	$	491	$	491
	$	—	$	—	$	491	$	491

	Fair Value Measurements as of December 31, 2020 Using:
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents—money market funds	$	16,816	$	28,018	$	—	$	44,834
	$	16,816	$	28,018	$	—	$	44,834
Liabilities:
Embedded derivative liability	$	—	$	—	$	455	$	455
	$	—	$	—	$	455	$	455

Summary of Aggregate Fair Values of Warrant Liability and Derivative Liability

The following table provides a roll-forward of the aggregate fair values financial instruments for which fair values are determined using Level 3 inputs:

(in thousands)	Embedded Derivative Liability
Balance as of December 31, 2020	$	455
Change in fair value	36
Balance as of September 30, 2021	$	491