Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments And Risk Management (Effect And Classification Of Derivative Instruments) (Details)

v2.4.0.6
Financial Instruments And Risk Management (Effect And Classification Of Derivative Instruments) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Derivative Instruments Designated As Cash Flow Hedges [Member]
   
Derivative Instruments, Gain (Loss) [Line Items]    
(Loss) recognized in other comprehensive income $ (1,170) $ (2,943)
Cost Of Sales [Member] | Derivative Instruments Designated As Cash Flow Hedges [Member]
   
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) reclassified from accumulated other comprehensive income to income for the effective portion 311 (368)
Gain (Loss) recognized in income for amount excluded from effectiveness testing and for the ineffective portion 91 (189)
Cost Of Sales [Member] | No Longer Designated As Hedging Instrument [Member]
   
Derivative Instruments, Gain (Loss) [Line Items]    
Gain reclassified from accumulated other comprehensive income to income as a result of cash flow hedge discontinuance 441  
Selling, General And Administrative Expense [Member] | Derivative Instruments Not Designated As Cash Flow Hedges [Member]
   
Derivative Instruments, Gain (Loss) [Line Items]    
Gain (Loss) recognized in income $ (2,773) $ 4,662