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Fair Value Measurements (Narratives) (Details) - USD ($)
3 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Jun. 30, 2019
Level 2 Assets and Liabilities      
Assets      
Transfers of assets between Level 1 and Level 2 $ 0   $ 0
Transfers of liabilities between Level 1 and Level 2 0   0
Long-term debt, fair value 380,000,000.0   180,500,000
Acquisition-related contingent consideration obligations     $ 6,300,000
Level 3 Assets and Liabilities      
Assets      
Transfers of assets between Level 2 and Level 3 0 $ 0  
Transfers of liabilities between Level 2 and Level 3 0 0  
Intangible asset and goodwill impairment $ 0 $ 0