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Foreign Exchange Forward Contracts (Narratives) (Details) | 3 Months Ended
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Sep. 30, 2018 USD ($) Contract | Sep. 30, 2017 USD ($)
Derivative [Line Items] |  |
Foreign currency transactions realized gain (loss) | $ 200,000 | $ (600,000)
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 |  | $ 9,600,000
Maximum maturities for contracts |  | 90 days

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