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Major Customers and Business Segments (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 29, 2012 | Dec. 31, 2011 | Jan. 01, 2011
Revenue information shown by geographic region |  |  |
Total revenues | $ 33,859 | $ 33,159 | $ 32,308
United States [Member] |  |  |
Revenue information shown by geographic region |  |  |
Total revenues | 0 | 18,447 | 17,796
Europe [Member] |  |  |
Revenue information shown by geographic region |  |  |
Total revenues | 0 | 8,940 | 8,954
Rest of Americas [Member] |  |  |
Revenue information shown by geographic region |  |  |
Total revenues | 0 | 2,287 | 2,198
Asia/Pacific Rim [Member] |  |  |
Revenue information shown by geographic region |  |  |
Total revenues | $ 0 | $ 3,485 | $ 3,360

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- Definition Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains. + 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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