Fair Value Measurements (Tables)

12 Months Ended

Dec. 28, 2013

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 at December 28, 2013, and December 29, 2012, according to the valuation techniques we used to determine their fair value (in thousands):



	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



	December 29, 2012
	Level 1		Level 2		Level 3		Total
Marketable debt securities – current
U.S. Treasury securities	$	17,538	$	—	$	—	$	17,538
Corporate bonds	—		21,549		—		21,549
U.S. Agency bonds	—		7,586		—		7,586
Municipal bonds	—		4,591		—		4,591
	17,538		33,726		—		51,264
Marketable debt securities – non-current
U.S. Treasury securities	15,004		—		—		15,004
Corporate bonds	—		10,359		—		10,359
U.S. Agency bonds	—		10,056		—		10,056
Municipal bonds	—		3,223		—		3,223
	15,004		23,638		—		38,642
	$	32,542	$	57,364	$	—	$	89,906