Fair Value Measurements (Tables)

12 Months Ended

Jan. 02, 2016

Fair Value Disclosures [Abstract]

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):

	January 2, 2016
	Level 1		Level 2		Level 3		Total
Marketable debt securities – current
Municipal bonds	$	—	$	4,055	$	—	$	4,055
Corporate bonds	—		2,512		—		2,512
	—		6,567		—		6,567
Marketable debt securities – non-current
Corporate bonds	—		5,001		—		5,001
U.S. Agency bonds	—		2,496		—		2,496
Municipal bonds	—		1,056		—		1,056
	—		8,553		—		8,553
	$	—	$	15,120	$	—	$	15,120

	January 3, 2015
	Level 1		Level 2		Level 3		Total
Marketable debt securities – current
U.S. Treasury securities	$	17,506	$	—	$	—	$	17,506
Corporate bonds	—		20,139		—		20,139
U.S. Agency bonds	—		12,525		—		12,525
Municipal bonds	—		6,953		—		6,953
Commercial paper	—		12,486		—		12,486
	17,506		52,103		—		69,609
Marketable debt securities – non-current
U.S. Treasury securities	14,990		—		—		14,990
Corporate bonds	—		15,236		—		15,236
U.S. Agency bonds	—		10,014		—		10,014
Municipal bonds	—		4,201		—		4,201
	14,990		29,451		—		44,441
	$	32,496	$	81,554	$	—	$	114,050