Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 27, 2014		Dec. 28, 2013		Dec. 29, 2012
Consolidated Statements Of Operations [Abstract]
Net revenues	$ 525,603	[1]	$ 508,028	[1]	$ 530,997	[1]
Cost of revenues (excluding amortization of purchased intangible assets below)	155,396		149,213		158,849
Gross profit	370,207		358,815		372,148
Other costs and expenses:
Research and development	198,919		211,047		220,927
Selling, general and administrative	117,007		112,770		112,479
Amortization of purchased intangible assets	43,219		48,245		45,321
Impairment of goodwill and purchased intangible assets					274,637
Income (loss) from operations	11,062		(13,247)		(281,216)
Other income (expense):
Gain on investment securities and other investments	155		1,879		1,523
Amortization of debt issue costs	(204)		(80)		(167)
Amortization of discount on long-term obligation	(350)
Foreign exchange gain (loss)	3,508		4,043		(1,512)
Interest income (expense), net	323		907		(1,586)
Income (loss) before provision for income taxes	14,494		(6,498)		(282,958)
Provision for income taxes	(14,412)		(25,756)		(37,301)
Net income (loss)	$ 82		$ (32,254)		$ (320,259)
Net income (loss) per common share - basic and diluted	$ 0.00		$ (0.16)		$ (1.48)
Shares used in per share calculation - basic	196,885		203,882		216,593
Shares used in per share calculation - diluted	200,145		203,882		216,593

[1] Storage net revenues are comprised of Enterprise Storage Products and laser printer ASIC products of the Microprocessor Products Division. Carrier net revenues are comprised of Communication and Broadband Wireless Products.