Annual report pursuant to Section 13 and 15(d)

Compensation and Other Benefit Plans - Weighted Average Assumptions (Details)

v3.20.4
Compensation and Other Benefit Plans - Weighted Average Assumptions (Details) - Stock Options
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Weighted average assumptions    
Dividend yield 0.00% 0.00%
Expected volatility 100.00% 102.00%
Risk-free interest rate 0.72% 2.42%
Expected term 5 years 7 months 20 days 5 years 7 months 13 days