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Derivative Financial Instruments (Details) (Foreign exchange contracts [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Other current assets [Member]
Fair value of Derivative Instruments
Foreign currency forward contracts	$ 0	$ 17
Other current liabilities [Member]
Fair value of Derivative Instruments
Foreign currency foreign contracts	$ 13	$ 0

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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