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Carrying Values of Derivative Instruments (Detail) (USD $)
In Thousands, unless otherwise specified |
Dec. 31, 2012
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Dec. 31, 2011
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| Derivative [Line Items] | ||||||
| Derivative Net Carrying Value | $ (2,741) | $ 2,241 | ||||
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Commodity Contract
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| Derivative [Line Items] | ||||||
| Derivative Net Carrying Value | (124) | (1,337) | ||||
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Designated as Hedging Instrument
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| Derivative [Line Items] | ||||||
| Derivative Net Carrying Value | (2,617) | 3,578 | ||||
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Designated as Hedging Instrument | Foreign currency contracts
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| Derivative [Line Items] | ||||||
| Derivative Net Carrying Value | (2,617) | [1] | 3,578 | [1] | ||
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Not Designated as Hedging Instrument
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| Derivative [Line Items] | ||||||
| Derivative Net Carrying Value | (124) | (1,337) | ||||
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Not Designated as Hedging Instrument | Commodity Contract
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| Derivative [Line Items] | ||||||
| Derivative Net Carrying Value | (124) | [1] | (1,337) | [1] | ||
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Prepaid Expenses and Other Current Assets
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| Derivative [Line Items] | ||||||
| Fair Value-Assets | 1,236 | 4,931 | ||||
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Prepaid Expenses and Other Current Assets | Designated as Hedging Instrument
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| Derivative [Line Items] | ||||||
| Fair Value-Assets | 1,122 | 4,738 | ||||
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Prepaid Expenses and Other Current Assets | Designated as Hedging Instrument | Foreign currency contracts
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| Derivative [Line Items] | ||||||
| Fair Value-Assets | 1,122 | [1] | 4,738 | [1] | ||
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Prepaid Expenses and Other Current Assets | Not Designated as Hedging Instrument
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| Derivative [Line Items] | ||||||
| Fair Value-Assets | 114 | 193 | ||||
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Prepaid Expenses and Other Current Assets | Not Designated as Hedging Instrument | Commodity Contract
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| Derivative [Line Items] | ||||||
| Fair Value-Assets | 114 | [1] | 193 | [1] | ||
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Other Current Liabilities
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| Derivative [Line Items] | ||||||
| Fair Value-(Liabilities) | (3,977) | (2,690) | ||||
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Other Current Liabilities | Designated as Hedging Instrument
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| Derivative [Line Items] | ||||||
| Fair Value-(Liabilities) | (3,739) | (1,160) | ||||
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Other Current Liabilities | Designated as Hedging Instrument | Foreign currency contracts
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| Derivative [Line Items] | ||||||
| Fair Value-(Liabilities) | (3,739) | [1] | (1,160) | [1] | ||
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Other Current Liabilities | Not Designated as Hedging Instrument
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| Derivative [Line Items] | ||||||
| Fair Value-(Liabilities) | (238) | (1,530) | ||||
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Other Current Liabilities | Not Designated as Hedging Instrument | Commodity Contract
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| Derivative [Line Items] | ||||||
| Fair Value-(Liabilities) | $ (238) | [1] | $ (1,530) | [1] | ||
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