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Share-Based Compensation (Tables)
6 Months Ended
Jun. 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:
202020192017
Expected volatility101.32 %49.9 %59.63% to 62.18%
Dividend yield0.0 %0.0 %0.0 %
Risk-free interest rate0.51 %1.66 %1.44% to 1.51%