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Geographic and Product Data (Tables) | 6 Months Ended
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Jul. 04, 2014
Segment Reporting [Abstract] |
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block] | The composition of the Company’s net sales to unaffiliated customers is set forth below (in thousands):
|  | Three Months Ended |  | Six Months Ended |
|  | July 4, |  | June 28, |  | July 4, |  | June 28, |
|  | 2014 |  | 2013 |  | 2014 |  | 2013 |
Japan |  | $ | 4,549 |  | $ | 4,648 |  | $ | 9,557 |  | $ | 9,387 |
United States |  |  | 2,926 |  |  | 3,154 |  |  | 5,801 |  |  | 6,394 |
China |  |  | 2,535 |  |  | 2,230 |  |  | 4,759 |  |  | 4,301 |
Korea |  |  | 1,952 |  |  | 1,834 |  |  | 4,573 |  |  | 3,869 |
Spain |  |  | 1,474 |  |  | 1,163 |  |  | 3,092 |  |  | 2,454 |
France |  |  | 1,190 |  |  | 595 |  |  | 2,136 |  |  | 1,127 |
Germany |  |  | 1,015 |  |  | 611 |  |  | 1,912 |  |  | 1,126 |
Other |  |  | 4,407 |  |  | 3,929 |  |  | 8,396 |  |  | 7,507 |
Total |  | $ | 20,048 |  | $ | 18,164 |  | $ | 40,226 |  | $ | 36,165 |
Revenue from External Customers by Products and Services [Table Text Block] | The composition of the Company’s net sales by product line is as follows (in thousands):
|  | Three Months Ended |  | Six Months Ended |
|  | July 4, |  | June 28, |  | July 4, |  | June 28, |
|  | 2014 |  | 2013 |  | 2014 |  | 2013 |
ICLs |  | $ | 12,172 |  | $ | 11,261 |  | $ | 24,413 |  | $ | 21,892 |
IOLs |  |  | 6,428 |  |  | 5,863 |  |  | 13,041 |  |  | 12,211 |
Core products |  |  | 18,600 |  |  | 17,124 |  |  | 37,454 |  |  | 34,103 |
Other surgical products |  |  | 1,448 |  |  | 1,040 |  |  | 2,772 |  |  | 2,062 |
Total |  | $ | 20,048 |  | $ | 18,164 |  | $ | 40,226 |  | $ | 36,165 |

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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 + Details
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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
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