Prepaid Expenses and Other Current Assets- Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Prepaid Expense and Other Assets, Current [Abstract]
Security deposits	$ 96	$ 66
Prepaid licenses	7	20
Research and development tax credit	516	516
Other receivables	20	20
Insurance	99	246
Other prepaid	60	65
Total prepaid expenses and other current assets	$ 798	$ 933