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Income Taxes - Reconciliation of Unrecognized Tax Benefit (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Reconciliation Of Unrecognized Tax Benefits Excluding Amounts Pertaining To Examined Tax Returns Roll Forward      
Balance at the beginning of the year $ 393 $ 271 $ 408
Additions based on tax positions related to current year 461 287 217
Adjustments based on tax positions related to prior years 70 (165) (354)
Balance at end of year $ 924 $ 393 $ 271