Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Financial Liabilities

The following table sets forth the fair value of the Company’s financial liabilities by level within the fair value hierarchy (in thousands):

	At December 31, 2022
	Level 1		Level 2		Level 3		Total
2017 Placement Warrants Liability	$	—	$	—	$	3,127	$	3,127
2016 Placement Warrants Liability	—		—		1,051		1,051
Total Warrant Liability	$	—	$	—	$	4,178	$	4,178

	At December 31, 2021
	Level 1		Level 2		Level 3		Total
2017 Placement Warrants Liability	$	—	$	—	$	5,030	$	5,030
2016 Placement Warrants Liability	—		—		1,765		1,765
Total Warrant Liability	$	—	$	—	$	6,795	$	6,795

Summary of Changes in Fair Value of Level 3 Financial Liabilities

The following table summarizes the changes in the fair value of the Company’s Level 3 financial liabilities (in thousands):

	Year Ended December 31,
	2022		2021		2020
Fair value, beginning of period	$	6,795	$	4,864	$	5,373
Change in fair value of Level 3 financial liabilities	(2,617)		2,284		(509)
Fair value of 2016 Placement Warrants at exercise	—		(2)		—
Fair value of 2017 Placement Warrants at exercise	—		(351)		—
Fair value, end of period	$	4,178	$	6,795	$	4,864