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Income Taxes - Summary of Reconciliation of Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Reconciliation of liability for unrecognized tax benefits      
Balance at beginning of period $ 1,889 $ 1,294 $ 1,062
Additions based on tax positions related to current year 70 595 232
Reductions based on tax positions related to prior year (181)    
Additions based on tax positions related to prior year 154    
Balance at end of period $ 1,932 $ 1,889 $ 1,294