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Derivative Instruments and Risk Management (Details Textual) | 3 Months Ended
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Mar. 31, 2013
Derivative instruments and risk management (Textual) [Abstract] |
Maturity period of foreign currency forward exchange contracts | 4 years

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- Details
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- Definition High end period remaining until maturity for the derivative contract, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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