Marketable Securities Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2013

Investments, Debt and Equity Securities [Abstract]

Components of marketable debt and equity securities

Our marketable debt and equity securities consisted of the following:

(In thousands)	June 30, 2013		December 30, 2012
Short-term marketable securities
Marketable debt securities
U.S Treasury securities	$	172,988	$	124,831
Corporate debt securities	76,840		—
U.S. agency securities	57,302		—
Municipal securities	30,650		—
Certificates of deposit	27,067		—
Commercial paper	23,523		9,989
Total short-term marketable securities	$	388,370	$	134,820
Long-term marketable securities
Marketable debt securities
Corporate debt securities	$	100,140	$	—
U.S. agency securities	53,497		—
Municipal securities	13,023		—
Total	166,660		—
Marketable equity security
Available-for-sale security	4,330		4,444
Total long-term marketable securities	$	170,990	$	4,444