Marketable Securities (Tables)

6 Months Ended

Jun. 29, 2014

Investments, Debt and Equity Securities [Abstract]

Components of marketable debt and equity securities

Our marketable debt securities consisted of the following:

(In thousands)	June 29, 2014		December 29, 2013
Short-term marketable securities
Marketable debt securities
U.S Treasury securities	$	110,964	$	143,510
Corporate debt securities	123,070		78,991
U.S. agency securities	46,036		31,518
Municipal securities	43,587		48,035
Certificates of deposit	52,076		31,949
Commercial paper	7,494		30,877
Total short-term marketable securities	$	383,227	$	364,880
Long-term marketable securities
Marketable debt securities
Corporate debt securities	$	125,205	$	98,979
U.S. agency securities	83,095		73,697
Municipal securities	5,466		3,479
Total long-term marketable securities	$	213,766	$	176,155