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Intangible Assets (Schedule of Indefinite-Lived Intangible Assets and Goodwill) (Details) $ in Thousands	6 Months Ended
	Jul. 01, 2016 USD ($)
Indefinite-Lived Intangible Assets [Roll Forward]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Beginning	$ 90,288
Indefinite-Lived Intangible Assets (Excluding Goodwill), Ending	90,288
Goodwill [Roll Forward]
Goodwill	1,013,570
Goodwill divested	40,830
Purchase accounting adjustment	3,932
Foreign currency translation	4,167
Goodwill	980,839
Greatbatch Medical [Member]
Goodwill [Roll Forward]
Goodwill	303,929
Goodwill divested	0
Purchase accounting adjustment	0
Foreign currency translation	91
Goodwill	304,020
QiG [Member]
Goodwill [Roll Forward]
Goodwill	50,096
Goodwill divested	40,830
Purchase accounting adjustment	0
Foreign currency translation	0
Goodwill	9,266
Lake Region Medical [Member]
Goodwill [Roll Forward]
Goodwill	659,545
Goodwill divested	0
Purchase accounting adjustment	3,932
Foreign currency translation	4,076
Goodwill	667,553
Trademarks And Tradenames [Member]
Indefinite-Lived Intangible Assets [Roll Forward]
Indefinite-Lived Intangible Assets (Excluding Goodwill), Beginning	90,288
Indefinite-Lived Intangible Assets (Excluding Goodwill), Ending	$ 90,288

X

- Definition

Goodwill, Written-off Related to Divestiture of Business Unit

+ References

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e961-128460

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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