Financial Assets and Liabilities Carried at Fair Value Measured on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2014	Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities	$ 6,535	$ 6,150
Derivative assets	902
Derivative liabilities	621
Contingent consideration liabilities	13,696	20,313
Level 1
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities	6,535	6,150
Derivative assets
Derivative liabilities
Contingent consideration liabilities
Level 2
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities
Derivative assets	902
Derivative liabilities	621
Contingent consideration liabilities
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities
Derivative assets
Derivative liabilities
Contingent consideration liabilities	$ 13,696	$ 20,313

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. Includes assets not subject to a master netting arrangement and not elected to be offset.

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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.

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