Marketable Securities (Tables)

6 Months Ended

Jun. 27, 2015

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation

Marketable securities at June 27, 2015 consisted of the following (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasuries	$	27,393	$	21	$	—		$	27,414
Agency securities (Federal)	14,255		—		(1		)	14,254
	$	41,648	$	21	$	(1	)	$	41,668

Marketable securities at December 27, 2014 consisted of the following (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
U.S. Treasuries	$	42,386	$	13	$	(4	)	$	42,395
Agency securities (Federal)	7,502		—		—			7,502
	$	49,888	$	13	$	(4	)	$	49,897

Investments Classified by Contractual Maturity Date

Contractual maturities of marketable securities as of June 27, 2015 were as follows (in thousands):

	Amortized Cost		Fair Value
Due in one year or less	$	41,648	$	41,668
Due after one year to five years	—		—
	$	41,648	$	41,668