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Fair Value Measurements - Schedule of Liability for Derivatives and Warrants (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Fair Value Disclosures [Abstract]        
Fair Values of Derivatives, Convertible Notes at beginning     $ 1,203  
Fair Values of Derivatives, Convertible Notes Change in fair value     (206)  
Fair Values of Derivatives, Convertible Notes Additions     3,583  
Fair Values of Derivatives, Convertible Notes Redemptions     (4,580)  
Fair Values of Derivatives, Reclassification of warrant liabilities      
Fair Values of Derivatives, Convertible Notes at end    
Fair Values of Warrant Liability subsidiary at beginning     24  
Fair Values of Warrant Liability subsidiary Change in fair value     (3)  
Fair Values of Warrant Liability subsidiary Additions      
Fair Values of Warrant Liability subsidiary Redemptions      
Fair Values of Warrant Liability subsidiary Reclassification of warrant liabilities      
Fair Values of Warrant Liability subsidiary at end 21   21  
Profits Interests Sold at beginning     1,971  
Profits Interests Sold Change in fair value     148  
Profits Interests Sold Additions      
Profits Interests Sold Redemptions      
Profits Interests Sold Reclassification of warrant liabilities      
Profits Interests Sold at end 2,119   2,119  
Warrant Liability, at beginning     24  
Warrant Liability, Change in fair value (4,543) (9,143)
Warrant Liability, Additions     50,743  
Warrant Liability, Redemptions      
Warrant Liability, Reclassification of warrant liabilities     (13,535)  
Warrant Liability, at end 28,085   28,085  
Embedded Put Option, at beginning     376  
Embedded Put Option, Change in fair value     (220)  
Embedded Put Option, Additions     172  
Embedded Put Option, Redemptions     (328)  
Embedded Put Option, Reclassification of warrant liabilities      
Embedded Put Option, at end