DERIVATIVES (Fair Value of Derivative Instruments) (Details) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2013
|
Dec. 31, 2012
|
---|---|---|
Designated as Hedging Instrument [Member] | Inventory Supply Arrangement Obligation [Member] | Accrued Expenses [Member]
|
||
Derivatives, Fair Value [Line Items] | ||
Fair Value Asset/(Liability) | $ (2,156) | $ 5,595 |
Not Designated as Hedging Instrument [Member] | Commodity Contract [Member] | Accounts Receivable [Member]
|
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Derivatives, Fair Value [Line Items] | ||
Fair Value Asset/(Liability) | $ 10,970 | $ 1,431 |