Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - Weighted Average Assumptions (Details)

v3.21.2
Stock-based Compensation - Weighted Average Assumptions (Details) - Stock Options
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Weighted average assumptions        
Dividend yield 0.00% 0.00% 0.00% 0.00%
Expected volatility 76.00% 100.00% 94.00% 100.00%
Risk-free interest rate 1.06% 0.40% 0.77% 0.77%
Expected term 6 years 5 years 11 months 4 days 5 years 8 months 4 days 5 years 7 months 28 days