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Balance Sheet Details - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Income Statement [Abstract]          
Depreciation and amortization expense $ 1,400 $ 1,100 $ 2,815 $ 2,192  
Accumulated depreciation and amortization $ 11,600   $ 11,600   $ 9,100