Share-Based Compensation (Tables)

6 Months Ended

Jul. 03, 2011

Share-Based Compensation [Abstract]

Fair value of stock options granted to employees, officers and non-employee board members and ESPP shares granted to employees

	Three months ended						Six months ended
	July 3, 2011			July 4, 2010			July 3, 2011			July 4, 2010
Option Plan Shares
Dividend yield	None			None			None			None
Expected volatility		0.43			0.49			0.43			0.50
Risk free interest rate		1.33	%		1.84	%		1.68	%		1.59	%
Expected lives	4.3 years			4.3 years			4.3 years			3.8 years
Estimated annual forfeiture rate		8.57	%		7.32	%		8.57	%		7.32	%
Weighted average fair value at grant date	$	16.11		$	17.01		$	17.75		$	11.90
Employee Stock Purchase Plan Shares
Dividend yield	None			None			None			None
Expected volatility		0.43			0.59			0.43			0.59
Risk free interest rate		0.17	%		0.18	%		0.17	%		0.18	%
Expected lives	1/2 year			1/2 year			1/2 year			1/2 year
Weighted average fair value at purchase date	$	13.79		$	8.58		$	13.79		$	8.58

Stock options and stock appreciation rights

						Weighted
						Average
				Weighted		Remaining
				Average		Contractual		Aggregate
	Shares			Exercise Price		Term (Years)		Intrinsic Value
	(In thousands, except exercise price and contractual term)
Options and SARs outstanding at January 2, 2011		20,393		$	32.18		3.8	$	393,996
Granted		2,512			45.32
Exercised		(2,274	)		25.10				53,966
Forfeited		(276	)		25.31
Expired		(218	)		50.14
Options assumed through acquisition		209			4.35
Options and SARs outstanding at July 3, 2011		20,346			34.63		3.8		244,405
Options and SARs vested and expected to vest after July 3, 2011, net of forfeitures		18,881			35.05		3.7		221,588
Options and SARs exercisable at July 3, 2011		13,357			36.48		2.8		146,726

Summary of the changes in RSUs outstanding

				Weighted
				Average Grant		Aggregate
	Shares			Date Fair Value		Intrinsic Value
	(In thousands, except for weighted average grant date fair value)
Non-vested share units at January 2, 2011		1,244		$	28.64	$	62,007
Granted		1,306			47.57
Vested		(355	)		49.79		17,446
Forfeited		(59	)		33.67
Non-vested share units at July 3, 2011		2,136			39.99		91,441

Share-based compensation expense

	Three months ended						Six months ended
	July 3, 2011			July 4, 2010			July 3, 2011			July 4, 2010
	(In thousands)
Share-based compensation expense by caption:
Cost of product revenues	$	1,090		$	1,309		$	2,032		$	3,767
Research and development		7,684			6,544			14,928			13,346
Sales and marketing		2,867			3,152			5,042			5,340
General and administrative		2,717			3,972			6,947			9,394
Total share-based compensation expense		14,358			14,977			28,949			31,847
Total tax benefit recognized		(3,349	)		(5,644	)		(7,732	)		(10,422	)
Decrease in net income	$	11,009		$	9,333		$	21,217		$	21,425
Share-based compensation expense by type of award:
Stock options and SARs	$	6,966		$	9,248		$	15,648		$	20,761
RSUs		5,271			4,042			9,110			7,708
ESPP		2,121			1,687			4,191			3,378
Total share-based compensation expense		14,358			14,977			28,949			31,847
Total tax benefit recognized		(3,349	)		(5,644	)		(7,732	)		(10,422	)
Decrease in net income	$	11,009		$	9,333		$	21,217		$	21,425

Fair value of options and RSUs

	Three months ended				Six months ended
	July 3, 2011		July 4, 2010		July 3, 2011		July 4, 2010
	(In thousands)
Fair value of options vested	$	7,458	$	8,884	$	19,401	$	25,033
Fair value of RSUs vested		1,227		705		10,345		8,944
Total fair value of options and RSUs vested	$	8,685	$	9,589	$	29,746	$	33,977