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Benefit Plans (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 28, 2018 | Dec. 29, 2017 | Dec. 30, 2016
Defined Contribution And Benefit Plan Disclosure [Line Items] |  |  |
Net costs recognized | $ 6.8 | $ 6.0 | $ 4.6
Defined Benefit Plan, Basis Points | 0.50% |  |
Maximum [Member] |  |  |
Defined Contribution And Benefit Plan Disclosure [Line Items] |  |  |
Employer matching contribution, percentage | 50.00% |  |
Employer matching contribution, percentage of employees' gross pay | 6.00% |  |
Legacy Greatbatch 401(k) Plan [Member] | Defined Contribution Plan Cash [Member] |  |  |
Defined Contribution And Benefit Plan Disclosure [Line Items] |  |  |
Employer matching contribution, percentage of employees' gross pay |  |  | 35.00%
Lakes Region Medical 401(k) Plan [Member] | Lake Region Medical 401(k) Plan [Member] |  |  |
Defined Contribution And Benefit Plan Disclosure [Line Items] |  |  |
Employer matching contribution, percentage |  |  | 50.00%

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- Definition Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate, Basis Spread, Yield of Bonds + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Details
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- Details
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- Details
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