Business Combinations (Narrative) (Details) (USD $)	12 Months Ended						0 Months Ended
	Dec. 27, 2014		Dec. 28, 2013		Dec. 29, 2012		Sep. 04, 2014
Business Acquisition [Line Items]
Cost reimbursment payments	$ 25,000,000
Goodwill tax deduction period	15 years
Net revenues	525,603,000	[1]	508,028,000	[1]	530,997,000	[1]
Net loss	82,000		(32,254,000)		(320,259,000)
Amortization of purchased intangible assets	43,219,000		48,245,000		45,321,000
Raid Software License [Member]
Business Acquisition [Line Items]
Total purchase price							52,000,000
Acquisition related costs	600,000
Discount interest rate							3.00%
Fair value							50,500,000
Discount rate	15.00%
Goodwill expected tax deductible period	15 years
Total intangible assets	44,900,000
Integrated Device Technology, Inc. [Member]
Business Acquisition [Line Items]
Total purchase price			96,098,000
Acquisition related costs			3,200,000
Net revenues			4,900,000
Net loss			2,000,000
Amortization of purchased intangible assets			4,600,000
Payroll accruals			1,500,000
Integrated Device Technology, Inc. [Member] | Fair Value Adjustment To Inventory [Member]
Business Acquisition [Line Items]
Net loss			800,000
Existing Technology [Member] | Raid Software License [Member]
Business Acquisition [Line Items]
Discount rate	18.00%
Total intangible assets	39,800,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	7 years
Existing Technology [Member] | Integrated Device Technology, Inc. [Member]
Business Acquisition [Line Items]
Total intangible assets			700,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life			2 years
Core Technology [Member] | Integrated Device Technology, Inc. [Member]
Business Acquisition [Line Items]
Total intangible assets			63,200,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life			7 years
Customer Relationships [Member] | Raid Software License [Member]
Business Acquisition [Line Items]
Discount rate	15.00%
Total intangible assets	3,800,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	10 years
Customer Relationships [Member] | Integrated Device Technology, Inc. [Member]
Business Acquisition [Line Items]
Total intangible assets			$ 3,400,000
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life			7 years
Developed Technology Assets [Member]
Business Acquisition [Line Items]
Acquired finite lived intangible asset amount discount rate			16.00%
Maximum [Member] | Existing Technology [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	7 years
Maximum [Member] | Existing And Core Technology [Member]
Business Acquisition [Line Items]
Acquired finite lived intangible asset amount discount rate			16.00%
Minimum [Member] | Existing Technology [Member]
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life	2 years
Minimum [Member] | Existing And Core Technology [Member]
Business Acquisition [Line Items]
Acquired finite lived intangible asset amount discount rate			14.00%

[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.