Annual report pursuant to Section 13 and 15(d)

Provision for Income Taxes - Summary of Valuation Allowance (Detail)

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Provision for Income Taxes - Summary of Valuation Allowance (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Valuation Allowance [Abstract]    
Valuation allowance, at beginning of year $ 65,110 $ 49,005
Change in valuation allowance 16,674 16,105
Valuation allowance, at end of year $ 81,784 $ 65,110