Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Significant Accounting Policies - Concentration of Risk (Details)

v3.21.1
Basis of Presentation and Significant Accounting Policies - Concentration of Risk (Details)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
customer
Mar. 31, 2020
customer
Dec. 31, 2020
customer
Concentration of Risk      
Trade receivable, net | $ $ 0.0    
Customer Concentration Risk | Revenues      
Concentration of Risk      
Number of major partners 1 2  
Customer Concentration Risk | Revenues | Partner 1      
Concentration of Risk      
Concentration risk (as a percent) 95.00% 62.00%  
Customer Concentration Risk | Revenues | Partner 2      
Concentration of Risk      
Concentration risk (as a percent)   38.00%  
Credit Concentration Risk | Trade Receivables      
Concentration of Risk      
Number of major partners     1
Concentration risk (as a percent)     100.00%