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Income Taxes - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Income Tax Disclosure [Abstract]        
Income tax expense $ 0 $ 0 $ 0 $ 0
Effective income tax rate 0.00% 0.00% 0.00% 0.00%