Warrants (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	12 Months Ended
	Aug. 02, 2023	Jun. 14, 2023	Jun. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Aug. 01, 2023	Jul. 15, 2019
Class of Warrant or Right [Line Items]
Warrants issued (in shares)							2,000,000
Fair value of warrants issued					$ 5,874
Exercise price of warrants (in usd per share)							$ 0.001
Proceeds from exercise of warrants, net				$ 8,307	$ 0
Public equity
Class of Warrant or Right [Line Items]
Fair value of warrants issued			$ 5,874
Pre-Funded Warrants
Class of Warrant or Right [Line Items]
Warrants issued (in shares)			4,000,000
Common Stock Warrants
Class of Warrant or Right [Line Items]
Warrants issued (in shares)			8,850,000
Warrants issued to purchase common stock (in shares)		3,689,452
Proceeds from warrant exercises	$ 4,800	$ 3,542		8,342
Costs of common stock issued under private equity offering				$ 35
Existing Warrants
Class of Warrant or Right [Line Items]
Exercise price of warrants (in usd per share)						$ 0.96
Class of warrant or right, outstanding (in shares)						5,000,000
Stock issued during period, conversion of convertible securities (in shares)	5,000,000			8,689,452
New Warrants
Class of Warrant or Right [Line Items]
Warrants issued (in shares)						2,750,000
Exercise price of warrants (in usd per share)	$ 1.09					$ 2.60
Warrants issued to purchase common stock (in shares)	160,548
Fair value of warrants						$ 4,671
Minimum | Common Stock Warrants
Class of Warrant or Right [Line Items]
Exercise price of warrants (in usd per share)			$ 0.96
Maximum | Common Stock Warrants
Class of Warrant or Right [Line Items]
Exercise price of warrants (in usd per share)			$ 1.09
Senior Secured Notes Due 2025
Class of Warrant or Right [Line Items]
Interest rate							12.50%
Fair value of warrants issued				$ 6,800
Warrants issued to purchase common stock (in shares)				143,000
Senior Secured Notes Due 2025 - First Additional Offering
Class of Warrant or Right [Line Items]
Warrants issued (in shares)				1,714,429
Exercise price of warrants (in usd per share)				$ 4.25	$ 5.38
Class of warrant or right, outstanding (in shares)				1,571,429	143,000
Senior Secured Notes Due 2025 - First Additional Offering | Maximum
Class of Warrant or Right [Line Items]
Warrants issued (in shares)				2,143,000
2020 Additional Notes
Class of Warrant or Right [Line Items]
Fair value of warrants issued				$ 735