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Derivatives and Other Financial Instruments - Gross fair market value of derivative not designated as hedging instruments and location in Balance Sheet (Details) (Foreign Currency Exchange Contracts, Not designated as hedging instrument, USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative asset, Fair value gross asset	$ 21
Accrued Expenses
Derivatives, Fair Value [Line Items]
Derivative liability, Fair value gross liability		$ 1

Fair value of derivative asset, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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- Definition

Fair value of derivative liability, presented on a gross basis even when the derivative instrument is subject to master netting arrangements and qualifies for net presentation in the statement of financial position.

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