Fair Value Measurements (Tables)

6 Months Ended

Jun. 28, 2014

Assets and Liabilities that are Measured at Fair Value on a Recurring Basis

The following tables set forth, by level within the fair value hierarchy, our financial assets that were accounted for at fair value on a recurring basis according to the valuation techniques we used to determine their fair value (in thousands):



	June 28, 2014
	Level 1		Level 2		Level 3		Total
Marketable debt securities – current
U.S. Treasury securities	$	7,505	$	—	$	—	$	7,505
Corporate bonds	—		22,851		—		22,851
U.S. Agency bonds	—		9,508		—		9,508
Municipal bonds	—		5,967		—		5,967
	7,505		38,326		—		45,831
Marketable debt securities – non-current
U.S. Treasury securities	16,494		—		—		16,494
Corporate bonds	—		7,640		—		7,640
U.S. Agency bonds	—		10,005		—		10,005
Municipal bonds	—		3,683		—		3,683
	16,494		21,328		—		37,822
	$	23,999	$	59,654	$	—	$	83,653



	December 28, 2013
	Level 1		Level 2		Level 3		Total
Marketable debt securities – current
U.S. Treasury securities	$	15,011	$	—	$	—	$	15,011
Corporate bonds	—		20,300		—		20,300
U.S. Agency bonds	—		12,025		—		12,025
Municipal bonds	—		4,823		—		4,823
	15,011		37,148		—		52,159
Marketable debt securities – non-current
U.S. Treasury securities	8,978		—		—		8,978
Corporate bonds	—		15,484		—		15,484
U.S. Agency bonds	—		7,498		—		7,498
Municipal bonds	—		2,672		—		2,672
	8,978		25,654		—		34,632
	$	23,989	$	62,802	$	—	$	86,791