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Amount of liability recognized arising from contingent consideration in a business combination.

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

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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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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Oct. 02, 2016	Dec. 31, 2015
Assets:
Money market instruments	$ 6,354	$ 6,024
Financial assets at fair value	644,305
Corporate Bonds
Assets:
Financial assets at fair value	297,779
Treasury Bills
Assets:
Financial assets at fair value	107,307
Asset-Backed Securities
Assets:
Financial assets at fair value	103,522
Euro Liquidity Fund
Assets:
Financial assets at fair value	49,586
Agency Bonds
Assets:
Financial assets at fair value	23,552
Sovereign Bonds
Assets:
Financial assets at fair value	53,104
Municipal Bonds
Assets:
Financial assets at fair value	9,455
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring
Assets:
Money market instruments	6,354
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	0
Liabilities:
Cash flow hedge forward contracts	460
Economic hedge forward contracts	33
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Corporate Bonds
Assets:
Financial assets at fair value	297,779
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Treasury Bills
Assets:
Financial assets at fair value	107,307
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Asset-Backed Securities
Assets:
Financial assets at fair value	103,522
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Euro Liquidity Fund
Assets:
Financial assets at fair value	49,586
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Agency Bonds
Assets:
Financial assets at fair value	23,552
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Sovereign Bonds
Assets:
Financial assets at fair value	53,104
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Municipal Bonds
Assets:
Financial assets at fair value	9,455
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Measurements, Recurring
Liabilities:
Contingent consideration liability	$ 2,200