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Balance Sheet Components - Prepaid Expenses and Other Assets, Non-Current (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Prepaid expenses $ 1,993 $ 3,324
Investment in affiliate 5,474 0
Other assets 136 367
Total prepaid expenses and other assets, noncurrent $ 7,603 $ 3,691