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Business Segments (Details Textual) | 3 Months Ended | 9 Months Ended | 12 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
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Sep. 27, 2014 Country Customer Segment | Sep. 28, 2013 Country Customer Segment | Sep. 27, 2014 Customer Segment Country | Sep. 28, 2013 Segment Customer Country | Sep. 27, 2014 Maximum Accounts Receivable | Dec. 28, 2013 Maximum Accounts Receivable | Sep. 27, 2014 Maximum Geographic Concentration Risk Revenues | Sep. 27, 2014 Maximum Geographic Concentration Risk Revenues | Sep. 28, 2013 Maximum Customer Concentration Risk Revenues | Sep. 28, 2013 Maximum Customer Concentration Risk Revenues | Sep. 27, 2014 United States | Sep. 28, 2013 United States | Sep. 27, 2014 United States | Sep. 28, 2013 United States
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of operating segments | 1 | 1 | 1 | 1 |  |  |  |  |  |  |  |  |  |
Number of country accounted for more than ten percent of revenue | 1 | 1 | 1 | 1 |  |  |  |  |  |  |  |  |  |
Percentage of revenues accounted |  |  |  |  |  |  |  |  |  |  | 54.80% | 58.50% | 52.30% | 53.30%
Number of customers accounted for more than ten percent of revenue | 0 | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |
Number of customers accounted for more than ten percent of account receivable | 0 | 0 | 0 | 0 |  |  |  |  |  |  |  |  |  |
Customer accounted, percentage |  |  |  |  | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |  |  |  |

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- Definition Number of customers accounted for more than ten percent of accounts receivable. + 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 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: 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 3: 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=35750535&loc=d3e13531-108611 Reference 4: 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 + Details
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- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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