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Foreign Exchange Forward Contracts (Narratives) (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2018 USD ($) Contract | Dec. 31, 2017 USD ($) | Dec. 31, 2018 USD ($) Contract | Dec. 31, 2017 USD ($)
Derivative [Line Items] |  |  |  |
Foreign currency transactions realized gain (loss) |  | $ (600,000) | $ 200,000 | $ (1,100,000)
Maximum |  |  |  |
Derivative [Line Items] |  |  |  |
Foreign currency transactions realized gain (loss) | $ (100,000) |  |  |
Not Designated as Hedging Instrument | Forward Foreign Currency Contracts |  |  |  |
Derivative [Line Items] |  |  |  |
Number of derivative financial instruments | Contract | 0 |  | 0 |
Notional principal amount of forward foreign currency contracts |  | $ 1,500,000 |  | $ 1,500,000
Maximum maturities for contracts |  |  |  | 90 days

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