Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Accrued Liabilities, Current [Abstract]
Personnel expenses	$ 457	$ 1,130
Professional fees	627	234
Research and development expenses	54	497
Current portion of operating lease liabilities	269	377
Current portion of finance lease liability	0	76
Other	57	185
Total accrued expenses and other current liabilities	$ 1,464	$ 2,499	[1]

[1] The balance sheet as of December 31, 2022 is derived from the audited financial statements as of that date.