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Stock-Based Compensation - Schedule of Value Profits Interests Granted (Details)
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Expected term (in years) 6 years 6 years
Risk-free rate 0.36% 2.43%
Expected volatility 140.45% 72.02%
Expected dividend yield 0.00% 0.00%