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Business Segment, Geographic And Concentration Risk Information (Segment Income From Operations) (Details 1) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 29, 2013 | Mar. 30, 2012
Segment Reporting Information [Line Items] |  |
Total segment income from operations | $ 19,159 | $ 14,583
Unallocated Operating Expenses | (4,820) | (3,385)
Operating income as reported | 14,339 | 11,198
Unallocated Other Expense | (7,273) | (5,079)
Income before provision for income taxes | 7,066 | 6,119
Implantable Medical [Member] |  |
Segment Reporting Information [Line Items] |  |
Total segment income from operations | 14,343 | 10,112
Electrochem [Member] |  |
Segment Reporting Information [Line Items] |  |
Total segment income from operations | $ 4,816 | $ 4,471

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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 1(i) -Article 4 + Details
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