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Derivatives - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |  |
Maturity of foreign currency exchange contracts |  | 9 months |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net gain (loss) on foreign currency exchange contracts | [1] | $ (1,251) | $ 294 | $ (491)
Not designated as hedging instrument | Foreign Currency Exchange Contract |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Net gain (loss) on foreign currency exchange contracts |  | $ (1,300) | $ 300 | $ (500)
[1] | This represents the gains and (losses) incurred on foreign currency hedging derivatives (see Note 20 for further 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 Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 + Details
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- Definition Maximum amount of time remaining before foreign currency exchange rate derivatives mature or expire, 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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