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Information Concerning Product Lines, Geographic Information and Revenue Concentration (Schedule of Revenue by Geographical Area) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Oct. 02, 2011 | Sep. 30, 2012 | Oct. 02, 2011
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenue | $ 3,657 | $ 5,339 | $ 11,858 | $ 16,623
United States [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenue | 1,307 | 1,730 | 3,796 | 6,398
Japan [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenue | 848 | 587 | 2,657 | 1,778
China [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenue | 267 | 603 | 1,626 | 2,474
Europe [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenue | 727 | 1,668 | 1,805 | 3,733
Malaysia [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenue | 411 | 437 | 1,363 | 1,503
Rest of Asia Pacific [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenue | 32 | 204 | 390 | 480
Rest of North America [Member] |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |
Revenue | $ 65 | $ 110 | $ 221 | $ 257

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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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