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Consolidated Balance Sheet Components - Schedule of Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Prepaid Expense And Other Assets Current [Abstract]
Prepaid research and development	$ 7,895	$ 2,534
Prepaid taxes	836	481
Prepaid other	2,506	2,533
Total prepaid and other current assets	$ 11,237	$ 5,548

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