Segment Information (Net Revenues By Product Groups) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 27, 2014		Dec. 28, 2013		Dec. 29, 2012
Revenue from External Customer [Line Items]
Net revenues	$ 525,603	[1]	$ 508,028	[1]	$ 530,997	[1]
Storage [Member]
Revenue from External Customer [Line Items]
Net revenues	366,443	[1]	342,900	[1]	352,993	[1]
Carrier [Member]
Revenue from External Customer [Line Items]
Net revenues	$ 159,160	[1]	$ 165,128	[1]	$ 178,004	[1]
Customer One Net Revenues [Member]
Revenue from External Customer [Line Items]
Concentration Risk, Percentage	18.00%		16.00%		16.00%
Customer Two Net Revenues [Member]
Revenue from External Customer [Line Items]
Concentration Risk, Percentage	11.00%		13.00%		12.00%
Customer Concentration Risk [Member]
Revenue from External Customer [Line Items]
Concentration Risk, Customer					2
Concentration Risk, Percentage					10.00%

[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.