Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accrued Liabilities And Other Liabilities [Abstract]
Professional fees		$ 186
Early exercise liability	$ 286	337
Other accrued expenses	872	363
Total accrued expenses and other current liabilities	$ 1,158	$ 886