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Derivatives - Schedule of Estimated Fair Values of Derivatives Designated as Hedging Instruments (Detail) (Prepaid expenses [Member], USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2014
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Dec. 31, 2013
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|---|---|---|
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Prepaid expenses [Member]
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| Derivative [Line Items] | ||
| Derivatives designated as hedging instruments | $ 3,609 | $ 5,374 |