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Fair Value of Financial Instruments (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Assets
Marketable securities		$ 4,701
Liabilities
Foreign currency forward contracts		3,061
Level 1 [Member]
Assets
Marketable securities	5,247
Level 2 [Member]
Liabilities
Foreign currency forward contracts
Level 3 [Member]
Assets
Marketable securities
Liabilities
Foreign currency forward contracts
Carrying Amount [Member]
Assets
Marketable securities	5,247	4,701
Liabilities
Foreign currency forward contracts		$ 3,061

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 investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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