Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Balance Sheet Related Disclosures [Abstract]
Prepaid expenses	$ 1,886	$ 2,586
Other current assets	1,085	1,336
Total prepaid expenses and other current assets	$ 2,971	$ 3,922