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Income Taxes - Summary of Carryforwards of Net Operating Losses (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Federal net operating losses    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards $ 108,830 $ 27,873
State net operating losses    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards $ 106,004 $ 14,454