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Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Liabilities [Abstract]
Net (loss) gain on foreign currency forward exchange contracts	$ 645	$ 2,412
Notional amounts of foreign currency forward exchange contracts	41,247	44,923
Fair Value, Measurements, Nonrecurring [Member] | Fair Value [Member]
Assets [Abstract]
Foreign currency forward exchange contracts	115	28
Total Assets	115	28
Liabilities [Abstract]
Foreign currency forward exchange contracts	420	222
Total Liabilities	420	222
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Assets [Abstract]
Foreign currency forward exchange contracts	0
Total Assets	0
Liabilities [Abstract]
Foreign currency forward exchange contracts	0
Total Liabilities	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Assets [Abstract]
Foreign currency forward exchange contracts	115	28
Total Assets	115	28
Liabilities [Abstract]
Foreign currency forward exchange contracts	420	222
Total Liabilities	420	222
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Assets [Abstract]
Foreign currency forward exchange contracts	0
Total Assets	0
Liabilities [Abstract]
Foreign currency forward exchange contracts	0
Total Liabilities	$ 0

X

- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

No definition available.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents contracts related to the exchange of different currencies, including foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into and existing as of the balance sheet date.

+ References

No definition available.

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents contracts related to the exchange of different currencies, including foreign currency options, forward (delivery or nondelivery) contracts, and swaps entered into and existing as of the balance sheet date.

+ References

No definition available.

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- Definition

Aggregate impact of foreign currency derivatives on earnings for the period. Includes impact of foreign currency cash flow hedge ineffectiveness and the ineffectiveness of fair value hedging derivatives and full change in fair value of the foreign currency derivatives not designated as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5618551-113959



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-Publisher FASB

-Name Accounting Standards Codification

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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- Definition

This element represents the aggregate of the liabilities reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

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- Definition

Aggregate notional amount of foreign currency exchange rate derivatives. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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