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Financial Instruments And Risk Management (Effect And Classification Of Derivative Instruments) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 6 Months Ended | ||
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Derivative Instruments Designated As Cash Flow Hedges [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gain (loss) recognized in other comprehensive income or loss | $ 727 | $ 1,763 | $ 2,880 | $ 593 |
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Cost Of Sales [Member] | Derivative Instruments Designated As Cash Flow Hedges [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gain (loss) reclassified from accumulated other comprehensive income or loss to income or loss for the effective portion | 766 | 481 | 1,626 | 792 |
| Loss recognized in income or loss for amount excluded from effectiveness testing and for the ineffective portion | (2) | (95) | (45) | (4) |
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Cost Of Sales [Member] | No Longer Designated As Hedging Instrument [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gain reclassified from accumulated other comprehensive income or loss as a result of cash flow hedge discontinuance | 0 | 0 | 0 | 441 |
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Other Non-operating Income (Expense) [Member] | Derivative Instruments Not Designated As Cash Flow Hedges [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gain (loss) recognized in income or loss | 2,663 | 0 | 6,012 | 0 |
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Selling, General And Administrative Expense [Member] | Derivative Instruments Not Designated As Cash Flow Hedges [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Gain (loss) recognized in income or loss | $ 0 | $ (3,480) | $ 0 | $ (6,253) |