Business Combinations - Purchase Price Allocation (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2015	Sep. 30, 2015	Aug. 31, 2015	Apr. 30, 2015	Sep. 26, 2014	Jul. 31, 2014	Apr. 30, 2014	Sep. 27, 2013
Business Acquisition [Line Items]
Goodwill	$ 283,452				$ 240,626			$ 225,300
Velocity Medical Solutions LLC
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life (in years)	6 years 1 month 6 days
Net tangible liabilities							$ (500)
Finite-lived intangible assets							10,600
Goodwill							9,800
Fair value of net assets							$ 19,900
Transpire Inc
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life (in years)	6 years 1 month 6 days
Net tangible liabilities						$ (100)
Finite-lived intangible assets						8,700
Indefinite-lived intangible assets — IPR&D						2,000
Goodwill						8,700
Fair value of net assets						$ 19,300
Mevis
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life (in years)	5 years 4 months 24 days
Net tangible assets				$ 21,700
Finite-lived intangible assets				5,800
Goodwill				8,200
Fair value of net assets				35,700
Less: Noncontrolling interests(2)				10,200
Net assets acquired				$ 25,500
Karl Otto
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life (in years)	8 years 3 months 18 days
Finite-lived intangible assets		$ 8,300
Indefinite-lived intangible assets — IPR&D		8,800
Goodwill		9,900
Fair value of net assets		$ 27,000
Claymount Investments B.V.
Business Acquisition [Line Items]
Finite-lived intangible asset, useful life (in years)	6 years
Net tangible assets			$ 11,300
Finite-lived intangible assets			16,200
Goodwill			30,500
Fair value of net assets			$ 58,000