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Supplemental Balance Sheet Information - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Supplemental Balance Sheet Information [Abstract]        
Depreciation and amortization $ 200 $ 100 $ 452 $ 392