Annual report pursuant to Section 13 and 15(d)

Income Taxes - Summary of Reconciliation of Unrecognized Tax Benefit Activity (Detail)

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Income Taxes - Summary of Reconciliation of Unrecognized Tax Benefit Activity (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]    
Beginning unrecognized tax benefits $ 732 $ 710
Decreases related to prior year tax positions (7) (65)
Increases related to current year tax positions 40 87
Ending unrecognized tax benefits $ 765 $ 732