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Fair Value Measurements (Fair Value of Assets (Liabilities)) (Details) - Level 2 - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Other current assets | Foreign exchange options |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value, Net Asset (Liability) | $ 0 | $ 1,792
Accrued expenses | Foreign exchange forwards |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair Value, Net Asset (Liability) | $ 0 | $ 14

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