Fair Value (Tables)

6 Months Ended

Jun. 29, 2012

Fair Value [Abstract]

Financial assets measured at fair value on a recurring basis

The following table sets forth the fair value of the Company’s financial assets and liabilities measured at fair value on a recurring basis as of June 29, 2012 and December 31, 2011, based on the three-tier fair value hierarchy:

	Total		Level 1		Level 2		Level 3
	(In thousands)
June 29, 2012
Cash equivalents
Money market funds	$	50,372	$	50,372	$	—	$	—
Corporate bonds		1,400		—		1,400		—
Short-term investments
State, municipal and local government agencies bonds		44,671		—		44,671		—
Corporate bonds		22,513		—		22,513		—
Commercial paper		12,386		—		12,386		—
U.S. federal government bonds		5,785		5,785		—		—
Prepaids and other current assets
Foreign exchange forward contracts		293		—		293		—
Total assets measured and recorded at fair value	$	137,420	$	56,157	$	81,263	$	—
Accrued liabilities
Foreign exchange forward contracts	$	191	$	—	$	191	$	—
Total liabilities measured and recorded at fair value	$	191	$	—	$	191	$	—
	Total		Level 1		Level 2		Level 3
	(In thousands)
December 31, 2011
Cash equivalents
Money market funds	$	62,131	$	62,131	$	—	$	—
Short-term investments
State, municipal and local government agencies bonds		38,825		—		38,825		—
Corporate bonds		18,604		—		18,604		—
Commercial paper		4,195		—		4,195		—
U.S. federal government bonds		9,230		9,230		—		—
Prepaids and other current assets
Foreign exchange forward contracts		373		—		373		—
Total assets measured and recorded at fair value	$	133,358	$	71,361	$	61,997	$	—
Accrued liabilities
Foreign exchange forward contracts	$	159	$	—	$	159	$	—
Total liabilities measured and recorded at fair value	$	159	$	—	$	159	$	—

Maturities of short-term investments

At June 29, 2012 and December 31, 2011, maturities of short-term investments are as follows:

	June 29, 2012		December 31, 2011
	(In thousands)
Short-term investments:
Less than one year	$	66,660	$	43,470
Due in 1—2 years		18,695		27,384
Total short-term investments	$	85,355	$	70,854

Summary of available-for-sale securities

The following is a summary of available-for-sale securities at June 29, 2012 and December 31, 2011:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
		(In thousands)
June 29, 2012
State, municipal and local government agencies bonds	$	44,609	$	67	$	(5	)	$	44,671
Corporate bonds		22,514		6		(7	)		22,513
Commercial paper		12,386		—		—			12,386
U.S. federal government bonds		5,786		—		(1	)		5,785
Total	$	85,295	$	73	$	(13	)	$	85,355
December 31, 2011
State, municipal and local government agencies bonds	$	38,785	$	46	$	(6	)	$	38,825
Corporate bonds		18,613		6		(15	)		18,604
Commercial paper		4,195		—		—			4,195
U.S. federal government bonds		9,226		4		—			9,230
Total	$	70,819	$	56	$	(21	)	$	70,854