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Business Segments and Customers (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 28, 2013 | Dec. 29, 2012 | Dec. 31, 2011
Revenue information shown by geographic region |  |  |
Total revenues | $ 38,273 | $ 33,859 | $ 33,159
United States |  |  |
Revenue information shown by geographic region |  |  |
Total revenues | 21,043 | 18,496 | 18,447
Europe |  |  |
Revenue information shown by geographic region |  |  |
Total revenues | 7,345 | 7,468 | 8,940
Rest of Americas |  |  |
Revenue information shown by geographic region |  |  |
Total revenues | 3,309 | 2,335 | 2,287
Asia/Pacific Rim |  |  |
Revenue information shown by geographic region |  |  |
Total revenues | $ 6,576 | $ 5,560 | $ 3,485

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + 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=26872669&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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