Fair Value Measurements (Tables)

9 Months Ended

Sep. 28, 2014

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table summarizes the financial assets and liabilities required to be measured at fair value on a recurring basis as of September 28, 2014 (in thousands):

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets:
Money market instruments	$	568	$	—
Corporate bonds	—		255,268
Treasury bills	—		102,674
Asset-backed securities	—		65,130
Sovereign bonds	—		19,234
Municipal bonds	—		9,014
Agency bonds	—		5,765
Cash flow hedge forward contracts	—		133
Economic hedge forward contracts	—		9
Liabilities:
Cash flow hedge forward contracts	—		105
Economic hedge forward contracts	—		9