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Major Customers and Business Segments (Details Textual) | 12 Months Ended
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Dec. 29, 2012 country Customer | Dec. 31, 2011 country Customer | Jan. 01, 2011 country Customer
Business segments (Additional Textual) [Abstract] |  |  |
Number of customers accounted for more than ten percent of revenue | 0 | 0 | 0
Individual country accounted | 0 | 0 | 0
Company's sales accounted | 54.60% | 55.60% | 55.20%
Customer [Member] |  |  |
Business Segments (Textual) [Abstract] |  |  |
Customer accounted, total revenue | 10.00% | 10.00% | 10.00%

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- Definition Individual country accounted. + References No definition available. + Details
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13537-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13531-108611 + Details
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