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Fair Value Measurements - Asset and Liabilities Measured at Fair Value (Details) - Fair Value, Measurements, Recurring
$ in Millions
Sep. 30, 2020
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Cash equivalents $ 34.4
Contingent consideration 4.4
Level 1  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Cash equivalents 34.4
Contingent consideration 0.0
Level 2  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Cash equivalents 0.0
Contingent consideration 0.0
Level 3  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Cash equivalents 0.0
Contingent consideration 4.4
Interest Rate Swap  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Interest rate swap 3.4
Interest Rate Swap | Level 1  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Interest rate swap 0.0
Interest Rate Swap | Level 2  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Interest rate swap 3.4
Interest Rate Swap | Level 3  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Interest rate swap $ 0.0