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Derivative Instruments and Hedging Activities - Schedule of Notional Amount (Details) - Derivatives Designated as Hedging Instruments - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
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Dec. 31, 2017 | Jun. 30, 2017
Purchase | Other foreign currency hedge contracts |  |
Derivative |  |
Derivative, notional amount | $ 144,442 | $ 165,563
Purchase | Cash flow hedge contracts |  |
Derivative |  |
Derivative, notional amount | 25,923 | 19,305
Sell | Other foreign currency hedge contracts |  |
Derivative |  |
Derivative, notional amount | 155,260 | 118,504
Sell | Cash flow hedge contracts |  |
Derivative |  |
Derivative, notional amount | $ 85,466 | $ 128,672
Maximum |  |
Derivative |  |
Remaining maturity | 13 months | 10 months

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Details
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- Details
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