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Basis of Presentation - Concentration of Credit Risk (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Concentration Risk [Line Items]          
Concentration risk 100.00% 100.00% 100.00% 100.00%  
Customer Concentration Risk          
Concentration Risk [Line Items]          
Concentration risk 100.00% 100.00% 100.00% 100.00%  
1 Customer | Customer Concentration Risk | Accounts Receivable          
Concentration Risk [Line Items]          
Concentration risk     15.00%   17.00%