Prepaid and Other Current Assets - Schedule of Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid insurance	$ 32	$ 63
Prepaid expenses	81	130
Prepaid rent	41	39
Other	2	0
Total prepaid and other current assets	$ 156	$ 232