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Income Taxes, Reconciliation of Statutory to Effective Income Tax Rate (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Effective Federal Income Tax Rate Reconciliation [Abstract]    
Income tax (benefit) provision at federal statutory rate (21.00%) (21.00%)
Valuation allowance 13.80% 24.20%
State income tax, net of federal benefit (4.70%) (4.70%)
Acquired in-process research and development expense 8.80% 0.00%
Warrants 7.60% 0.00%
Convertible notes (3.30%) 1.20%
Stock options (0.10%) 0.20%
Research and development (1.10%) 0.00%
Pass through entity and other 0.00% 0.10%
Effective tax rate 0.00% 0.00%