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Description of the Business and Summary of Significant Accounting Policies - Concentration of Credit Risk (Details) - Trade and Other Receivables - Customer Concentration Risk
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Customer A    
Concentration Risk [Line Items]    
Concentration risk, percentage   10.00%
Customer B    
Concentration Risk [Line Items]    
Concentration risk, percentage 53.00% 27.00%