Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Components - Prepaid expenses and other current assets (Details)

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Balance Sheet Components - Prepaid expenses and other current assets (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Prepaid insurance and other $ 3,780 $ 5,326
Vendor prepayments 5,669 4,132
Total $ 9,449 $ 9,458