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Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Fair Value, Inputs, Level 1 [Member] |  |
Liability |  |
Derivatives | $ 0 |
Assets |  |
Derivatives |  | 0
Fair Value, Inputs, Level 2 [Member] |  |
Liability |  |
Derivatives | 577 |
Assets |  |
Derivatives |  | 125
Fair Value, Inputs, Level 3 [Member] |  |
Liability |  |
Derivatives | 0 |
Assets |  |
Derivatives |  | $ 0

X
- Details
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Balance Type: | na
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- Definition Fair value portion of asset contracts related to the exchange of different currencies, including, but not limited to, foreign currency options, forward contracts, and swaps. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Balance Type: | na
Period Type: | duration