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Amount of debt securities categorized neither as held-to-maturity nor trading.

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Fair value as of the balance sheet date of all foreign currency derivative liabilities designated as cash flow hedging instruments.

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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Oct. 04, 2015	Dec. 31, 2014
Assets:
Money market instruments	$ 32,417	$ 777
Financial assets at fair value	512,146
Corporate Bonds
Assets:
Financial assets at fair value	227,012
Treasury Bills
Assets:
Financial assets at fair value	98,981
Asset-Backed Securities
Assets:
Financial assets at fair value	89,246
Euro Liquidity Fund
Assets:
Financial assets at fair value	63,672
Agency Bonds
Assets:
Financial assets at fair value	14,280
Sovereign Bonds
Assets:
Financial assets at fair value	12,270
Municipal Bonds
Assets:
Financial assets at fair value	6,685
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring
Assets:
Money market instruments	32,417
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring
Assets:
Money market instruments	0
Cash flow hedge forward contracts	82
Economic hedge forward contracts	32
Liabilities:
Cash flow hedge forward contracts	227
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Corporate Bonds
Assets:
Financial assets at fair value	227,012
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Treasury Bills
Assets:
Financial assets at fair value	98,981
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Asset-Backed Securities
Assets:
Financial assets at fair value	89,246
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Euro Liquidity Fund
Assets:
Financial assets at fair value	63,672
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Agency Bonds
Assets:
Financial assets at fair value	14,280
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Sovereign Bonds
Assets:
Financial assets at fair value	12,270
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Municipal Bonds
Assets:
Financial assets at fair value	$ 6,685