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Income Taxes - Unrecognized Tax Benefits (Details) - 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]    
Unrecognized tax benefits, beginning of period $ 211 $ 0
Increases related to current period tax positions 75 81
Increases related to prior period tax positions 9 130
Unrecognized tax benefits, end of period $ 295 $ 211