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Concentration Risks - Narrative (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Revenue Benchmark | Customer Concentration Risk | One customer    
Concentration Risk [Line Items]    
Concentration risk, percentage   10.60%
Revenue Benchmark | Geographic Concentration Risk    
Concentration Risk [Line Items]    
Concentration risk, percentage 20.00%  
Purchase Benchmark | Supplier Concentration Risk | Three Vendors    
Concentration Risk [Line Items]    
Concentration risk, percentage   10.00%