Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Balance Sheet Components [Abstract]
Prepaid expenses	$ 2,465	$ 2,164
Prepaid insurance	1,009	1,560
Other current assets	191	755
Total prepaid expenses and other current assets	$ 3,665	$ 4,479