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Income Taxes - Reconciliation (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Income Tax Disclosure [Abstract]    
U.S. statutory rate 21.00% 21.00%
State taxes (net of federal tax benefit) 5.60% 2.00%
Valuation allowance (26.00%) (20.70%)
Other (0.50%) (2.40%)
Effective income tax rate reconciliation 0.10% (0.10%)