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Fair Value of Financial Instruments (Schedule of Valuation Techniques and Significant Observable Inputs) (Details)
Sep. 30, 2018
Jun. 30, 2018
Weighted average cost of capital    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration, liability, measurement input 0.151 0.148
Adjusted EBITDA growth rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration, liability, measurement input 0.152 0.182