Fair Value Measurements (Tables)

6 Months Ended

Jun. 29, 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 June 29, 2014 (in thousands):

	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)
Assets:
Money market instruments	$	1,358	$	—
Corporate bonds	—		235,780
Treasury bills	—		87,967
Asset-backed securities	—		70,692
Sovereign bonds	—		18,915
Municipal bonds	—		10,592
Agency bonds	—		1,500
Cash flow hedge forward contracts	—		45
Economic hedge forward contracts	—		6
Liabilities:
Cash flow hedge forward contracts	—		127
Economic hedge forward contracts	—		27