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Basis of Presentation and Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - Customer Concentration Risk
3 Months Ended 9 Months Ended
Sep. 30, 2020
customer
Sep. 30, 2020
customer
Accounts Receivable    
Concentration Risk [Line Items]    
Number of customers 5 5
Concentration risk (as a percent)   48.00%
Sales Revenue, Net    
Concentration Risk [Line Items]    
Number of customers 5 5
Concentration risk (as a percent) 43.00% 46.00%