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Income Taxes - Summary of Reconciliation of the Amount off Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Beginning balances $ 3,607 $ 3,197
Increases (decreases) related to prior year tax positions 0 (7)
Increases related to current year tax positions 571 417
Balance at December 31 $ 4,178 $ 3,607