Fair Value (Tables)

9 Months Ended

Sep. 26, 2015

Fair Value Disclosures [Abstract]

Fair Value, Assets Measured on Recurring Basis

Assets measured at fair value on a recurring basis as of September 26, 2015 were as follows (in thousands): 

	Level 1		Level 2		Total
Assets:
Cash equivalents
Money market funds	$	81,173	$	—	$	81,173
Agency securities (Federal)	—		1,500		1,500
Marketable securities
U.S. Treasuries	—		19,409		19,409
Agency securities (Federal)	—		22,245		22,245
Total	$	81,173	$	43,154	$	124,327

Assets measured at fair value on a recurring basis as of December 27, 2014 was as follows (in thousands):

	Level 1		Level 2		Total
Assets:
Cash equivalents
Money market funds	$	65,303	$	—	$	65,303
Marketable securities
U.S. Treasuries	—		42,395		42,395
Agency securities (Federal)	—		7,502		7,502
Total	$	65,303	$	49,897	$	115,200