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Derivatives Derivatives not designated as hedging instrument under Generally Accepted Accounting Principals (Details) - Cross Currency Swap € in Thousands | Dec. 31, 2018 EUR (€)
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Derivatives designated as hedging instruments |
Derivative [Line Items] |
Derivative, Notional Amount | € 174,000
Derivatives not designated as hedging instruments |
Derivative [Line Items] |
Derivative, Notional Amount | € 0

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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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Namespace Prefix: | invest_
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Balance Type: | na
Period Type: | instant

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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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Balance Type: | na
Period Type: | duration

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- Details
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Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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