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Financial Instruments - Balance Sheet Location (Details) (Fair Value, Measurements, Recurring [Member], USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Fair Value, Inputs, Level 1 [Member]
   
Assets [Abstract]    
Foreign currency cash flow hedges $ 0 $ 0
Liabilities [Abstract]    
Foreign currency cash flow hedges 0 0
Derivative Liability 0 0
Fair Value, Inputs, Level 2 [Member]
   
Assets [Abstract]    
Foreign currency cash flow hedges 323 85
Liabilities [Abstract]    
Foreign currency cash flow hedges 208 799
Derivative Liability 22,750 22,681
Fair Value, Inputs, Level 3 [Member]
   
Assets [Abstract]    
Foreign currency cash flow hedges 0 0
Liabilities [Abstract]    
Foreign currency cash flow hedges 0 0
Derivative Liability $ 0 $ 0