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Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Prepaid Expense and Other Assets, Current [Abstract]    
Prepaid expenses $ 1,084 $ 764
Notes receivable — current 0 232
Deposits 286 153
Other current assets 90 140
Total prepaid expenses and other $ 1,460 $ 1,289