Business Combinations Business Combinations (Intangible Assets Acquired) (Details) - USD ($) $ in Thousands		3 Months Ended
	Oct. 31, 2014	Jan. 01, 2016	Dec. 26, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted average useful life		9 years	18 years
Doremi Labs [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase Price Allocation	$ 45,600
Doremi Labs [Member] | Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase Price Allocation	$ 25,600
Weighted average useful life	10 years
Doremi Labs [Member] | Developed Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase Price Allocation	$ 17,500
Weighted average useful life	7 years 6 months
Doremi Labs [Member] | Trade Name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase Price Allocation	$ 1,300
Weighted average useful life	1 year
Doremi Labs [Member] | Backlog [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Purchase Price Allocation	$ 1,200
Weighted average useful life	1 year