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Financial Instruments - Balance Sheet Location (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Inputs, Level 1 [Member]
Assets [Abstract]
Foreign currency cash flow hedges - asset	$ 0	$ 0
Liabilities [Abstract]
Foreign currency cash flow hedges - liability	0	0
Net investment hedge derivative	0	0
Fair Value, Inputs, Level 2 [Member]
Assets [Abstract]
Foreign currency cash flow hedges - asset	344	879
Liabilities [Abstract]
Foreign currency cash flow hedges - liability	136	168
Net investment hedge derivative	23,740	23,716
Fair Value, Inputs, Level 3 [Member]
Assets [Abstract]
Foreign currency cash flow hedges - asset	0	0
Liabilities [Abstract]
Foreign currency cash flow hedges - liability	0	0
Net investment hedge derivative	$ 0	$ 0

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 assets not subject to a master netting arrangement and not elected to be offset.

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