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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	Mar. 31, 2014
Quoted Prices in Active Markets for Identical Asset (Level 1) [Member]
Assets:
Available-for-sale securities	$ 1,497
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Derivative assets (other current assets)	3,191
Liabilities:
Derivative liabilities (other current liabilities)	169
Carrying Value [Member]
Assets:
Available-for-sale securities	1,497
Derivative assets (other current assets)	3,191
Liabilities:
Derivative liabilities (other current liabilities)	169
Fair Value Measurement [Member]
Assets:
Available-for-sale securities	1,497
Derivative assets (other current assets)	3,191
Liabilities:
Derivative liabilities (other current liabilities)	$ 169

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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- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or 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.

+ References+ Details