Business Combinations (Intangible Assets Acquired) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 27, 2014	Dec. 28, 2013
Raid Software License [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 44,900
Raid Software License [Member] | Existing Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years	7 years
Total intangible assets	39,800
Raid Software License [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years	10 years
Total intangible assets	3,800
Raid Software License [Member] | License Payments [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years	8 years
Total intangible assets	1,300
Integrated Device Technology, Inc. [Member] | Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Total intangible assets		100
Integrated Device Technology, Inc. [Member] | Existing Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years		2 years
Total intangible assets		700
Integrated Device Technology, Inc. [Member] | Core Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years		7 years
Total intangible assets		63,200
Integrated Device Technology, Inc. [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years		7 years
Total intangible assets		$ 3,400
Maximum [Member] | Existing Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years	7 years
Maximum [Member] | Integrated Device Technology, Inc. [Member] | Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years		1 year
Minimum [Member] | Existing Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated average remaining useful life, years	2 years