Marketable Securities (Tables)

3 Months Ended

Mar. 30, 2013

Investments, Debt and Equity Securities [Abstract]

Schedule of Contractual Maturities of Marketable Securities

The following table summarizes the contractual maturities of our marketable securities (at fair value and in thousands): 

	March 30, 2013		December 29, 2012
Short-term marketable securities:
Maturities of less than five years	$	73,550	$	64,865
Long-term marketable securities:
Maturities of more than ten years	4,717		4,717
Total marketable securities	$	78,267	$	69,582

Schedule of Composition of Marketable Securities

The following table summarizes the composition of our marketable securities (at fair value and in thousands):

	March 30, 2013		December 29, 2012
Short-term marketable securities:
Corporate and government bonds and notes and commercial paper	$	73,550	$	64,865
Long-term marketable securities:
Federally-insured or FFELP guaranteed student loans	4,717		4,717
Total marketable securities	$	78,267	$	69,582

Schedule of Composition of Auction Rate Securities

The following table summarizes the composition of our auction rate securities (in thousands):

	March 30, 2013					December 29, 2012
	Par Value		Fair Value		S&P  Credit  rating	Par Value		Fair Value		S&P  Credit  rating
Long-term marketable securities:
Federally-insured or FFELP guaranteed student loans	$	5,700	$	4,717	AA+	$	5,700	$	4,717	AA+
Total auction rate securities	$	5,700	$	4,717		$	5,700	$	4,717