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Fair Value of Financial Instruments (Schedule of Valuation Techniques and Significant Observable Inputs) (Details)
Dec. 31, 2018
Jun. 30, 2018
Weighted average cost of capital [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration, liability, measurement input 0.151 0.148
Adjusted EBITDA growth rate [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Contingent consideration, liability, measurement input 0.152 0.182