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Segment Information (Reconciliation of Revenue from Segments to Consolidated) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2017 | Apr. 01, 2016
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | $ 345,413 | $ 332,238
Operating Segments [Member] | Medical Segment [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 334,067 | 320,566
Operating Segments [Member] | Medical Segment [Member] | Cardio And Vascular [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 125,108 | 113,671
Operating Segments [Member] | Medical Segment [Member] | Cardiac Neuromodulation [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 103,813 | 108,533
Operating Segments [Member] | Medical Segment [Member] | Advanced Surgical, Orthopedics, and Portable Medical [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | 105,146 | 98,362
Operating Segments [Member] | Non-Medical Segment [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Total sales | $ 11,346 | $ 11,672

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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