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Foreign Exchange Forward Contracts (Narratives) (Details)
12 Months Ended
Jun. 30, 2019
USD ($)
Contract
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Derivative [Line Items]      
Gains (losses) from hedging transactions $ 0    
Not Designated as Hedging Instrument | Forward Foreign Currency Contracts      
Derivative [Line Items]      
Number of derivative financial instruments | Contract 0    
Notional principal amount of forward foreign currency contracts   $ 5,000,000.0  
Maximum maturities for contracts 60 days    
Other (Expense) Income, Net      
Derivative [Line Items]      
Gains (losses) due to changes in fair value of foreign currency $ 100,000 $ (1,200,000) $ (700,000)