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Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Assets and liabilities measured at fair value on recurring basis [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Derivative assets (other current assets)	$ 8,525
Carrying Value [Member]
Assets:
Derivative assets (other current assets)	8,525
Fair Value Measurement [Member]
Assets:
Derivative assets (other current assets)	$ 8,525

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled within one year or normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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