Investments held to maturity Investments held to maturity

6 Months Ended

Jun. 25, 2013

Investments held to maturity [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Investments held to maturity consists of zero-coupon discount notes issued by government-sponsored enterprises. The amortized cost and estimated fair value of investments held to maturity at June 25, 2013 are summarized as follows (in thousands):

	June 25, 2013
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Investments held to maturity:
Freddie Mac	$	69,934	$	—	$	(6	)	$	69,928
Federal Home Loan Bank	13,994		—		—			13,994
Fannie Mae	13,991		—		(1		)	13,990
Total	$	97,919	$	—	$	(7	)	$	97,912

The Company had no investments held to maturity at December 25, 2012.

As of June 25, 2013, the Company held no investments that were in a continuous loss position for twelve months or more and thus, based on the existing facts and circumstances, no other-than-temporary impairment exists.  In addition, the Company currently does not intend to sell any securities in unrealized loss positions prior to their recovery and it is not more-likely-than-not that the Company would be required to sell such securities.  All of the securities mature within one year.

Fair value of the securities was determined using Level 2 inputs, which included prices obtained from independent pricing sources that were based on observable transactions of similar instruments, but not quoted markets.