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Fair Value Measurements (Details)
$ in Millions
Jun. 30, 2019
USD ($)
Fair Value, Inputs, Level 3  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Royalty agreement, asset, fair value $ 1.0
Fair Value, Inputs, Level 2 | Interest Rate Contracts  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Derivative liability, fair value $ (1.7)