Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Total Level 3 Financial Assets
Beginning balance	$ 7,371	$ 13,453
Ending balance	5,593	7,371
Total Level 3 Financial Liabilities
Beginning balance	7,977	21,297
Ending balance	10,320	7,977
Notes Payable, Other Payables
Total Level 3 Financial Liabilities
Change in fair value	(1,778)	(6,082)
Warrant | Private placement warrants
Total Level 3 Financial Liabilities
Beginning balance	222	0
Transfers out of Level 2 to Level 3		20,461
Change in fair value	4,505	(20,239)
Exercise of Junior Preferred Stock Warrants	0	0
Ending balance	4,727	222
Warrant | December 2023 Warrants
Total Level 3 Financial Liabilities
Change in fair value	721
Transfers out of Level 3 to Level 2	(1,105)
Warrant | Series B-1 Convertible Preferred Stock
Total Level 3 Financial Liabilities
Change in fair value		106
Settlements		(2,950)
Warrant | Junior Preferred Stock Warrants
Total Level 3 Financial Liabilities
Change in fair value		(3,963)
Exercise of Junior Preferred Stock Warrants		(653)
Notes Receivable
Total Level 3 Financial Assets
Change in fair value	$ (1,778)	$ (6,082)