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Income Taxes - Components of Income Tax (Benefit) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Current:    
Federal $ 0 $ (6,115)
State 16 144
Foreign 0 (21)
Total current 16 (5,992)
Deferred:    
Federal 0 (116)
State (56) (71)
Foreign 0 0
Total deferred (56) (187)
Income tax benefit $ (40) $ (6,179)