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Hedging Activities And Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Foreign currency contracts | $ 81,845 | $ 75,304

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- References No definition available. + Details
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Period Type: | duration

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- Definition Fair value portion of liability contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant