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Fair Value Measurements Information about derivative positions (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross Derivative Liability	$ 4,336	$ 620
Gross Derivative Asset	2,485	106
Foreign exchange forward contracts	$ 1,851us-gaap_DerivativeLiabilities	$ 514us-gaap_DerivativeLiabilities

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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