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StockBased Compensation (Details)
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
StockBased Compensation    
Volatility, minimum 5200.00% 4900.00%
Volatility, maximum 5600.00% 5000.00%
Risk-free interest rate, minimum 0.37% 1.45%
Risk-free interest rate, maximum 1.66% 2.59%
Expected term 6 years 3 months 6 years 3 months