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Business Segment, Geographic And Concentration Risk Information (Segment Revenue by Categories) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 29, 2013 | Mar. 30, 2012
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | $ 148,265 | $ 159,103
Revenue, Major Customer [Line Items] |  |
Revenue Major Customer Percent | 52.00% | 43.00%
Customera [Member] |  |
Revenue, Major Customer [Line Items] |  |
Revenue Major Customer Percent | 19.00% | 20.00%
Customer B [Member] |  |
Revenue, Major Customer [Line Items] |  |
Revenue Major Customer Percent | 18.00% | 13.00%
Customer C [Member] |  |
Revenue, Major Customer [Line Items] |  |
Revenue Major Customer Percent | 15.00% | 10.00%
United States [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 71,334 | 82,406
Puerto Rico [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 28,498 | 23,540
Belgium [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 17,671 | 15,338
United Kingdom Ireland [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 7,536 | 12,357
Rest Of World [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 23,226 | 25,462
Implantable Medical [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 111,414 | 117,817
Implantable Medical [Member] | Cardiac Neuromodulation [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 71,167 | 75,135
Implantable Medical [Member] | Vascular [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 10,624 | 11,636
Implantable Medical [Member] | Orthopaedic [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 29,623 | 31,046
Electrochem [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 36,851 | 41,286
Electrochem [Member] | Portable Medical [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 18,889 | 18,720
Electrochem [Member] | Energy [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | 12,293 | 14,771
Electrochem [Member] | Other Electrochem [Member] |  |
Segment Reporting, Revenue Reconciling Item [Line Items] |  |
Sales Revenue, Net | $ 5,669 | $ 7,795

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- Definition Percent of total company revenue from top four customers + References No definition available. + Details
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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=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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