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Fair Value Measurements - Asset and Liabilities Measured at Fair Value (Details) - Fair Value, Measurements, Recurring
$ in Millions
Sep. 30, 2016
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Cash equivalents $ 31.5
Contingent consideration 5.1
Level 1  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Cash equivalents 31.5
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 $ 5.1