Fair Value Measurements and Disclosures (Tables)

6 Months Ended

Jul. 01, 2017

Fair Value Disclosures [Abstract]

Assets and liabilities measurements at estimated fair value on recurring basis excluding accrued interest components

The following tables present the Company’s assets and liabilities measured at estimated fair value on a recurring basis, excluding accrued interest components, categorized in accordance with the fair value hierarchy (in thousands), as of the following dates:

	July 1, 2017								December 31, 2016
	Fair Value Measurements Using Input Types								Fair Value Measurements Using Input Types
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	5,371	$	—	$	—	$	5,371	$	959	$	—	$	—	$	959
Commercial paper and corporate debt    securities		—		2,996		—		2,996		—		2,499		—		2,499
Total cash equivalents	$	5,371	$	2,996	$	—	$	8,367	$	959	$	2,499	$	—	$	3,458
Marketable securities:
U.S. Treasury securities and U.S. Government agency debt securities		—		5,747		—		5,747		—		17,072		—		17,072
Certificates of deposits		—		26,308		—		26,308		—		23,019		—		23,019
Commercial paper		—		17,424		—		17,424		—		22,402		—		22,402
Municipal securities and corporate debt securities		—		38,012		—		38,012		—		14,943		—		14,943
Asset-backed Securities		—		5,849		—		5,849		—		5,463		—		5,463
Total marketable securities	$	—	$	93,340	$	—	$	93,340	$	-	$	82,899	$	—	$	82,899
Total(1)	$	5,371	$	96,336	$	—	$	101,707	$	959	$	85,398	$	—	$	86,357

⁽¹⁾ Excludes $34.0 million and $43.6 million held in operating accounts as of July 1, 2017 and December 31, 2016, respectively. See “Cash and Investments” in Note 4 of the Notes to Consolidated Financial Statements for more information.

Notional amounts and fair values of outstanding derivative instruments

The following table presents the notional amounts and fair values of the Company’s outstanding derivative instruments in U.S. Dollar equivalent (in millions):

	As of July 1, 2017						As of December 31, 2016
			Fair Value					Fair Value
	Notional Amount		Asset		Liability		Notional Amount	Asset		Liability
Undesignated Hedges:
Forward Foreign Currency Contracts
Purchase		20.0		—		—	12.6		—		—
Sell		11.5		—		—	1.3		—		—