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Derivatives - Total Net Fair Value of Derivatives (Details) - Fair Value Measurements on a Recurring Basis - Foreign Currency Exchange Contracts - Not Designated as Hedging Instrument - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Total Balance |  |
Derivatives, Fair Value [Line Items] |  |
Foreign currency exchange contracts | $ (37) | $ (249)
Level 1 |  |
Derivatives, Fair Value [Line Items] |  |
Foreign currency exchange contracts | 0 | 0
Level 2 |  |
Derivatives, Fair Value [Line Items] |  |
Foreign currency exchange contracts | (37) | (249)
Level 3 |  |
Derivatives, Fair Value [Line Items] |  |
Foreign currency exchange contracts | $ 0 | $ 0

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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + 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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