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Acquisitions - Narrative (Details) - USD ($)
3 Months Ended
Jan. 18, 2019
Mar. 31, 2019
Sep. 30, 2020
Business Acquisition [Line Items]      
Goodwill acquired during period $ 45,500,000    
Rhapsody America LLC      
Business Acquisition [Line Items]      
Percentage of shares acquired 42.00%    
Interest acquired, percent 84.00%    
Acquired finite lived intangible assets $ 23,700,000    
Business Combination, Step Acquisition, Remeasurement Gain and Gains (Losses) From Other Preexisting Relationships   $ 12,300,000  
Rhapsody America LLC | Rhapsody America LLC      
Business Acquisition [Line Items]      
Noncontrolling interest, ownership percent by noncontrolling interest     16.00%