Supplemental Financial Information (Tables)

12 Months Ended

Dec. 27, 2014

Supplemental Financial Information [Abstract]

Schedule Of Inventory

	December 27,		December 28,
(in thousands)	2014		2013
Work-in-progress	$	17,438	$	15,847
Finished goods		20,511		15,227
	$	37,949	$	31,074

Property And Equipment

			Accumulated
December 27, 2014 (in thousands)	Gross		Amortization		Net
Software	$	39,508	$	(28,263)	$	11,245
Machinery and equipment		140,555		(120,478)		20,077
Leasehold improvements		20,008		(14,588)		5,420
Furniture and fixtures		5,127		(4,558)		569
Total	$	205,198	$	(167,887)	$	37,311

			Accumulated
December 28, 2013 (in thousands)	Gross		Amortization		Net
Software	$	37,136	$	(25,640)	$	11,496
Machinery and equipment		132,109		(111,308)		20,801
Leasehold improvements		19,654		(13,326)		6,328
Furniture and fixtures		5,568		(5,044)		524
Total	$	194,467	$	(155,318)	$	39,149

Schedule of Intangible Assets

			Accumulated				Estimated
December 27, 2014 (in thousands)	Gross		Amortization		Net		life
Core technology	$	246,961	$	(189,014)	$	57,947	5 - 9 years
Customer relationships		102,106		(85,455)		16,651	2 - 10 years
Existing technology		109,700		(65,859)		43,841	3 - 7 years
Trademarks		24,600		(19,095)		5,505	6 years - indefinite
Developed technology assets		70,240		(61,854)		8,386	3 years
In-process research and development*		16,746		(5,396)		11,350	4-5 years
Total	$	570,353	$	(426,673)	$	143,680

			Accumulated				Estimated
December 28, 2013 (in thousands)	Gross		Amortization		Net		life
Core technology	$	245,661	$	(173,772)	$	71,889	5 - 9 years
Customer relationships		98,306		(76,591)		21,715	2 - 10 years
Existing technology		69,900		(50,126)		19,774	3 - 7 years
Trademarks		9,200		(2,857)		6,343	6 years - indefinite
Developed technology assets		68,802		(55,442)		13,360	3 years
In-process research and development*		16,746		(2,853)		13,893	4-5 years
Total	$	508,615	$	(361,641)	$	146,974

*        Table above reflects original classification upon acquisition. The majority of this in-process research and development was subsequently completed during 2013 and accordingly is being amortized.

Estimated future amortization expense for intangible assets

2015	$	41,006
2016		24,753
2017		19,270
2018		18,150
2019		17,419
Thereafter		19,482
	$	140,080

Goodwill

	Balance
	(in thousands)
Goodwill at December 29, 2012	$	252,419
Goodwill recorded in connection with acquisitions		26,430
Goodwill at December 28, 2013		278,849
Goodwill recorded in connection with acquisitions		4,390
Goodwill at December 27, 2014	$	283,239

Components of accrued liabilities

	December 27,		December 28,
	2014		2013
Accrued compensation and benefits	$	34,519	$	36,708
Other accrued liabilities		39,616		27,549
	$	74,135	$	64,257

Schedule Of Product Warranties

	Year Ended
	December 27,		December 28,		December 29,
(in thousands)	2014		2013		2012
Balance, beginning of the year	$	2,163	$	5,981	$	5,415
Accrual for new warranties issued		689		402		2,530
Reduction for payments and product replacements		(983)		(1,022)		(328)
Adjustments related to changes in estimate of warranty accrual		(113)		(3,198)		(1,636)
Balance, end of the year	$	1,756	$	2,163	$	5,981

The components of interest expense, net

	Year Ended
	December 27,		December 28,		December 29,
(in thousands)	2014		2013		2012
Interest income	$	1,134	$	1,310	$	2,865
Interest expense on debt		(811)		(403)		(4,451)
	$	323	$	907	$	(1,586)