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Subsequent Events - Issuance of Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
Apr. 21, 2020
Mar. 31, 2020
Dec. 31, 2019
Class A Common Stock      
Subsequent Events      
Common stock, par value (in dollars per share)   $ 0.0001 $ 0.0001
Subsequent Event | Series A Convertible Preferred Stock      
Subsequent Events      
Proceeds from issuance of preferred stock $ 150.0    
Liquidation preference per share (in dollars per share) $ 1,000    
Percentage of increase in paid in kind dividend rate 1.00%    
Period of antidilutive offerings to be adjusted in calculation of conversion rate 9 months    
Threshold trading days 20    
Threshold consecutive trading days 30    
Threshold percentage of voting rights to enable conversion 19.99%    
Percentage of then current liquidation preference per share plus accumulated and unpaid dividends as cash consideration 150.00%    
Change of control, conditional period following issuance of convertible preferred stock 36 months    
Subsequent Event | Series A Convertible Preferred Stock | Purchaser      
Subsequent Events      
Number of shares issued 152,250    
Preferred stock, par value (in dollars per share) $ 0.0001    
Subsequent Event | Series A Convertible Preferred Stock | Convertible Preferred Stock, Dividend Rate For First Ten Years      
Subsequent Events      
PIK dividend rate 6.00%    
Subsequent Event | Series A Convertible Preferred Stock | Convertible Preferred Stock, Dividend Rate Thereafter      
Subsequent Events      
PIK dividend rate 8.00%    
Subsequent Event | Series A Convertible Preferred Stock | Prior to the fourth semi-annual PIK dividend payment date      
Subsequent Events      
Threshold stock price trigger percentage 180.00%    
Subsequent Event | Series A Convertible Preferred Stock | After fourth and prior to the fourth semi-annual PIK dividend payment date      
Subsequent Events      
Threshold stock price trigger percentage 170.00%    
Subsequent Event | Series A Convertible Preferred Stock | On or after the sixth and prior to the eighth semi-annual PIK dividend payment date      
Subsequent Events      
Threshold stock price trigger percentage 160.00%    
Subsequent Event | Series A Convertible Preferred Stock | On or after the eighth semi-annual PIK dividend payment date      
Subsequent Events      
Threshold stock price trigger percentage 150.00%    
Subsequent Event | Series A Convertible Preferred Stock | Change of Control is on or after the sixth semi-annual PIK dividend payment date      
Subsequent Events      
Percentage of then current liquidation preference per share plus accumulated and unpaid dividends as cash consideration 100.00%    
Subsequent Event | Class A Common Stock      
Subsequent Events      
Common stock, par value (in dollars per share) $ 0.0001    
Conversion rate 63.2911    
Conversion price $ 15.80