Warrants to Acquire Shares of Common Stock (Tables)

9 Months Ended

Sep. 30, 2024

Warrants and Rights Note Disclosure [Abstract]

Schedule of Warrant Activity

The following is a summary of the activity of the Company's warrants to acquire shares of common stock for the nine months ended September 30, 2024 (in thousands except per share data):

Warrant Issuance	Outstanding, December 31, 2023	Granted	Exercised	Expired	Outstanding, September 30, 2024	Exercise Price per Share		Expiration
Warrants classified as equity:
August 2024 Registered Direct Offering	—	15,849	—	—	15,849	$	1.20	August 2029
August 2024 Registered Direct Offering Pre-Funded Warrants	—	9,479	—	—	9,479	$	0.0001	n/a
March 2024 Registered Direct Offering	—	13,029	—	—	13,029	$	1.41	September 2029
March 2024 Registered Direct Offering Pre-Funded Warrants	—	2,029	(2,029)	—	—	$	0.0001	n/a
January 2024 Offering	—	12,000	(533)	—	11,467	$	0.75	January 2029
January 2024 Offering Pre-Funded Warrants	—	1,870	(1,870)	—	—	$	0.0001	n/a
November 2023 Registered Direct Offering	3,652	—	—	—	3,652	$	0.75	January 2029
February 2023 Offering	7,206	—	(212)	—	6,994	$	0.75	February 2028
April 2022 Offering	766	—	—	—	766	$	5.40	April 2027
April 2022 Offering - Modified Warrants	3,864	—	—	—	3,864	$	0.75	January 2029
January 2020 Offering	309	—	—	—	309	$	3.93	July 2025
July 2020 PIPE Offering	25	—	—	—	25	$	3.30	August 2025
Other	32	—	—	(32)	—	$	7.50	June 2024
	15,854	54,256	(4,644)	(32)	65,434