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Derivative Financial Instruments (Derivatives And Hedging-Cash Flow Hedges) (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | |||||
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Mar. 31, 2014
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Mar. 31, 2013
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||||
| Net gain (loss) on cash flow hedges | $ (3,613) | [1] | $ (4,560) | [1] | ||
| Amount of gain (loss) reclassified from AOCL into Income | 26 | [1] | (4,367) | [1] | ||
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Interest Rate Contract [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||||
| Net gain (loss) on cash flow hedges | (3,613) | 0 | ||||
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Interest Rate Contract [Member] | Interest Expense [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||||
| Amount of gain (loss) reclassified from AOCL into Income | 26 | 41 | ||||
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NYMEX Commodity Contracts [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||||
| Net gain (loss) on cash flow hedges | (4,560) | |||||
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NYMEX Commodity Contracts [Member] | Sales [Member]
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| Derivative Instruments, Gain (Loss) [Line Items] | ||||||
| Amount of gain (loss) reclassified from AOCL into Income | $ (4,408) | |||||
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