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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2021
Jun. 30, 2020
Valuation Allowance [Abstract]      
Cumulative losses lookback period   2 years  
Deferred tax assets, impairment allowance $ 370 $ (370) $ 0