Employee Stock Benefit Plans (Tables)

12 Months Ended

Dec. 30, 2011

Employee Stock Benefit Plans [Abstract]

Schedule Of Shares Authorized Under Stock Option Plan By Exercise Price Range

	Options Outstanding						Options Exercisable
Range	Number Outstanding		Weighted- Average Exercise Price per Share		Weighted- Average Remaining Contractual Life (in years)		Number Exercisable		Weighted- Average Exercise Price per Share
(in thousands, except for per share data)
$3.35 – $14.53		1,174	$	10.18		1.87		1,174	$	10.18
$14.91 – $19.96		1,615		18.81		3.84		1,204		18.43
$20.01– $21.68		1,419		20.93		4.79		680		20.82
$21.71– $28.00		1,348		25.20		2.48		1,209		24.91
$28.16– $35.94		1,020		31.39		5.30		317		31.78
$36.20– $41.22		1,350		37.79		4.86		390		40.26
$41.28		1,190		41.28		6.83		—		—
$42.36– $48.18		785		43.15		6.36		62		42.83
Total		9,901	$	27.48		4.41		5,036	$	21.22

Schedule Of Options Outstanding And Expected To Vest

	Number Of  Shares (in thousands)		Weighted- Average Exercise Price per Share		Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Options outstanding		9,901	$	27.48		4.41	$	157,716
Options outstanding and expected to vest		9,532		27.14		4.35		155,028
Options exercisable		5,036		21.22		3.24		111,704

Schedule Of Stock Options Activity

	Options			Weighted average exercise price
(in thousands, except for per share data)
Outstanding at the beginning of year		10,314		$	22.25
Granted		2,038			41.94
Exercised		(2,238	)		16.37
Cancelled		(213	)		29.49
Outstanding at the end of year		9,901		$	27.48
Available for grant		3,128

Schedule Of Restricted Stock Unit Activity

	Restricted Stock Units			Weighted Average Grant-Date Fair Value
(in thousands, except for per share data)
Unvested at the beginning of year		1,202		$	25.73
Granted		109			41.32
Vested		(137	)		36.56
Cancelled		(50	)		23.85
Unvested at the end of year		1,124		$	26.01

Schedule Of Stock-Based Compensation Expense, Net Of Tax, Related To Employee Stock-Based Compensation (For All Plans)

Fiscal Years	2011			2010			2009
(in thousands)
Cost of sales	$	1,955		$	1,816		$	1,854
Research and development		4,624			3,991			3,476
Sales and marketing		6,672			5,611			4,446
General and administrative		15,200			11,707			8,883
Total operating expenses		26,496			21,309			16,805
Total stock-based compensation expense		28,451			23,125			18,659
Tax benefit (1)		(12,056	)		(4,959	)		(3,376	)
Total stock-based compensation expense, net of tax	$	16,395		$	18,166		$	15,283

(1) Tax benefit related to U.S. incentive and non-qualified stock options, employee stock purchase plan (ESPP) and restricted stock units, applying a Federal statutory and State (Federal effected) tax rate for fiscal years 2011, 2010, and 2009.

Schedule Of Weighted-Average Assumptions Used In Employee Stock Purchase Plan

Fiscal Years	2011			2010			2009
Expected dividend yield		—			—			—
Expected stock price volatility		45	%		43	%		45	%
Risk free interest rate		1.13	%		1.39	%		2.01	%
Expected life of options after vesting		1.3 years			1.3 years			1.3 years

Schedule Of Weighted-Average Assumptions Used In Stock Options Granted

Fiscal Years	2011			2010			2009
Expected dividend yield		—			—			—
Expected stock price volatility		34.0	%		35.5	%		53.1	%
Risk free interest rate		0.16	%		0.20	%		0.90	%
Expected life of purchase		0.5 years			0.5 years			0.5 years