Derivative Instruments and Hedging Activities Disclosure (Details 1) (Foreign exchange contracts [Member], USD $) In Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Derivatives Designated as Cash Flow Hedges [Member]
Gains and losses on derivative instruments in the consolidated statement of operations:
Amount of Gain (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	$ (434)	$ 5,013	$ (4,905)	$ 7,563
Amount of (Loss) Gain Reclassified from Other Comprehensive Income into Income (Effective Portion)	(566)	236	(1,884)	1,565
Amount of Gain (Loss) Recognized in Income on Derivative (Ineffective Portion)	24	(186)	(90)	(215)
Derivatives not Designated as Hedging Instruments [Member] \| Other Income [Member]
Gains and losses on derivative instruments in the consolidated statement of operations:
Amount of Gain (Loss) Recognized in Income on Derivatives	$ (22)	$ 457	$ 107	$ (156)

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The income statement location of the effective portion of net gain or loss reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 205G

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 133
-Paragraph 44C
-Subparagraph b
-Clause 3

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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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- Definition

The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

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+ Details

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