Fair Value Measurements (Tables)

3 Months Ended

Mar. 29, 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 at March 29, 2014, and December 28, 2013, according to the valuation techniques we used to determine their fair value (in thousands):



	March 29, 2014
	Level 1		Level 2		Level 3		Total
Marketable debt securities – current
U.S. Treasury securities	$	15,009	$	—	$	—	$	15,009
Corporate bonds	—		20,356		—		20,356
U.S. Agency bonds	—		12,018		—		12,018
Municipal bonds	—		4,764		—		4,764
	15,009		37,138		—		52,147
Marketable debt securities – non-current
U.S. Treasury securities	8,989		—		—		8,989
Corporate bonds	—		10,303		—		10,303
U.S. Agency bonds	—		7,502		—		7,502
Municipal bonds	—		3,675		—		3,675
	8,989		21,480		—		30,469
	$	23,998	$	58,618	$	—	$	82,616



	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