Cash Equivalents and Investments (Tables)

9 Months Ended

Oct. 02, 2011

Cash Equivalents and Investments [Abstract]

Company's cash equivalents and investments measured at fair value

	Fair Value Measurements as of October 2, 2011
	Level 1			Level 2			Level 3		Total
	(In thousands)
Cash equivalents:
Money-market funds	$	632,707	(a)	$	—		$	—	$	632,707
U.S. government and agency securities		—			785	(b)		—		785
Total cash equivalents	$	632,707		$	785		$	—	$	633,492
Available-for-sale debt securities:
Asset-backed and mortgage-backed securities	$	—		$	108,970	(b)	$	—	$	108,970
U.S. government and agency securities		4,830	(a)		26,187	(b)		—		31,017
Corporate debt securities		—			13,732	(b)		—		13,732
Total short-term investments	$	4,830		$	148,889		$	—	$	153,719
Long-term investments in equity securities:
Marketable available-for-sale equity securities	$	1,382	(c)	$	—		$	—	$	1,382

	Fair Value Measurements as of December 31, 2010
	Level 1			Level 2			Level 3		Total
	(In thousands)
Cash equivalents:
Money-market funds	$	378,382	(a)	$	—		$	—	$	378,382
U.S. government and agency securities		2,000	(a)		—			—		2,000
Total cash equivalents	$	380,382		$	—		$	—	$	380,382
Available-for-sale debt securities:
Asset-backed and mortgage-backed securities	$	—		$	116,552	(b)	$	—	$	116,552
U.S. government and agency securities		1,496	(a)		24,502	(b)		—		25,998
Corporate debt securities		—			12,330	(b)		—		12,330
Total short-term investments	$	1,496		$	153,384		$	—	$	154,880
Long-term investments in equity securities:
Marketable available-for-sale equity securities	$	1,681	(c)	$	—		$	—	$	1,681

(a) The fair value of money-market funds is determined using unadjusted prices in active markets. The fair value of these U.S. government and agency securities is determined using quoted prices in active markets.

(b) These investments are traded less frequently than Level 1 securities and are valued using inputs that include quoted prices for similar assets in active markets and inputs other than quoted prices that are observable for the asset, such as interest rates, yield curves, prepayment speeds, collateral performance, broker/dealer quotes and indices that are observable at commonly quoted intervals.

(c) The fair value of marketable equity securities is determined using quoted market prices in active markets. These amounts are included within other assets in the condensed consolidated balance sheets.

Non-marketable equity securities measured and recorded at fair value on a non-recurring basis

	Carrying Value as of October 3, 2010			Fair Value  Measurements During the Nine Months Ended October 3, 2010						Losses for the Three Months Ended		Losses for the Nine Months Ended
				Level 1		Level 2		Level 3		October 3, 2010		October 3, 2010
	(In thousands)
Non-marketable securities	$	—	*	$	—	$	—	$	1,900	$	—	$	11,600

* The carrying value was zero as the related investment was sold during the three months ended October 3, 2010.

Company's available-for-sale securities

	October 2, 2011
	Amortized Cost		Gross  Unrealized Gain		Gross  Unrealized Loss*			Fair Value
	(In thousands)
Short-term debt securities:
Asset-backed and mortgage-backed securities	$	100,627	$	8,560	$	(217	)	$	108,970
U.S. government and agency securities		30,181		836		—			31,017
Corporate debt securities		13,617		161		(46	)		13,732
Total short-term debt securities	$	144,425	$	9,557	$	(263	)	$	153,719
Long-term marketable equity securities	$	852	$	687	$	(157	)	$	1,382

* As of October 2, 2011, there were 51 investments in an unrealized loss position.

	December 31, 2010
	Amortized Cost		Gross  Unrealized Gain		Gross  Unrealized Loss			Fair Value
	(In thousands)
Short-term debt securities:
Asset-backed and mortgage-backed securities	$	107,891	$	9,012	$	(351	)	$	116,552
U.S. government and agency securities		25,313		812		(127	)		25,998
Corporate debt securities		12,226		176		(72	)		12,330
Total short-term debt securities	$	145,430	$	10,000	$	(550	)	$	154,880
Long-term marketable equity securities	$	852	$	868	$	(39	)	$	1,681

Gross unrealized losses and fair values of the Company's short-term investments

	October 2, 2011
	Less than 12 Months					Greater than 12 Months
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Asset-backed and mortgage-backed securities	$	7,654	$	(170	)	$	575	$	(47	)
U.S. government and agency securities		1,037		—			—		—
Corporate debt securities		4,614		(46	)		—		—
Total	$	13,305	$	(216	)	$	575	$	(47	)
	December 31, 2010
	Less than 12 Months					Greater than 12 Months
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
	(In thousands)
Asset-backed and mortgage-backed securities	$	11,807	$	(179	)	$	2,469	$	(172	)
U.S. government and agency securities		13,969		(127	)		—		—
Corporate debt securities		6,527		(72	)		—		—
Total	$	32,303	$	(378	)	$	2,469	$	(172	)

Contractual maturities of available-for-sale debt securities

	Available-For-Sale Debt Securities
	(In thousands)
Due within one year	$	10,211
Due in 1-5 years		40,572
Due in 5-10 years		10,826
Due after 10 years		92,110
Total	$	153,719