Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Payments - Schedule of Weighted-Average Assumptions used in Black-Scholes Option-Pricing Model (Details)

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Stock-Based Payments - Schedule of Weighted-Average Assumptions used in Black-Scholes Option-Pricing Model (Details) - Stock Option
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Weighted-average risk-free interest rate 0.46% 1.88% 1.29% 2.46%
Expected option term (in years) 5 years 10 months 20 days 6 years 29 days 5 years 11 months 26 days 6 years 7 days
Volatility 79.96% 89.91% 78.26% 91.49%