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Company Overview and Basis of Presentation - Related Party Transactions - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Related Party Transaction [Line Items]        
Related party expenses $ 0.6 $ 0.7 $ 1.4 $ 1.0
Maximum | Customer Concentration Risk | Sales Revenue, Net        
Related Party Transaction [Line Items]        
Substantial stockholder revenue percentage 1.00% 1.00% 1.00% 1.00%
Substantial Stockholder        
Related Party Transaction [Line Items]        
Revenue $ 0.5 $ 0.4 $ 1.3 $ 1.3