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Balance Sheet Components - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Prepaid Expense And Other Assets Current [Abstract]    
Unbilled contract assets $ 66,909 $ 2,147
Deferred revenues from associated contracts (58,909) (2,147)
Net unbilled contract assets 8,000 0
Prepaid assets 7,383 8,353
Other current assets 5,070 1,807
Total prepaid expenses and other current assets $ 20,453 $ 10,160