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Stockholders' Equity - Schedule of Assumptions to Estimate Fair Value of Stock Options Using Black-Scholes Option Pricing Model (Details)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Stockholders Equity Note [Abstract]    
Expected terms (years) 5 years 9 months 7 days 5 years 6 months
Expected volatility 181.00% 147.63%
Risk-free interest rate, minimum 0.27% 2.51%
Risk-free interest rate, maximum 0.40% 2.59%
Expected dividends 0.00% 0.00%