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Income Taxes - Components of Income Tax Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Current:      
Federal $ 0 $ 0 $ (29)
State 0 0 0
Current tax expense (benefit) 0 0 (29)
Deferred:      
Federal 0 0 29
State 0 0 0
Deferred tax expense (benefit) 0 0 29
Total income tax expense (benefit) $ 0 $ 0 $ 0