Fair Value Measurements (Tables)

9 Months Ended

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



	September 28, 2013
	Level 1		Level 2		Level 3		Total
Marketable debt securities – current
U.S. Treasury securities	$	15,014	$	—	$	—	$	15,014
Corporate bonds	—		25,231		—		25,231
U.S. Agency bonds	—		12,539		—		12,539
Municipal bonds	—		4,623		—		4,623
	15,014		42,393		—		57,407
Marketable debt securities – non-current
U.S. Treasury securities	9,008		—		—		9,008
Corporate bonds	—		7,852		—		7,852
U.S. Agency bonds	—		5,000		—		5,000
Municipal bonds	—		3,823		—		3,823
	9,008		16,675		—		25,683
	$	24,022	$	59,068	$	—	$	83,090



	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