Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Weighted Average Assumptions (Details)

v3.21.1
Stock-based Compensation - Weighted Average Assumptions (Details) - Stock Options
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Weighted average assumptions    
Dividend yield 0.00% 0.00%
Expected volatility 98.00% 100.00%
Risk-free interest rate 0.71% 0.90%
Expected term 5 years 7 months 9 days 5 years 6 months 25 days