Quarterly report pursuant to Section 13 or 15(d)

Share-Based Compensation (Tables)

v3.20.2
Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of Valuation Assumptions
The ranges for the assumptions used in the Monte Carlo model for the PRSUs granted during 2020, 2019 and 2017 are presented as follows:
2020 2019 2017
Expected volatility
101.32% to 117.71%
49.9  %
59.63% to 62.18%
Dividend yield 0.0  % 0.0  % 0.0  %
Risk-free interest rate
0.18% to 0.51%
1.66  %
1.44% to 1.51%