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Cash and Investments (Details Textual) | 9 Months Ended | 12 Months Ended
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Sep. 27, 2014 | Dec. 28, 2013
Investments, Debt and Equity Securities [Abstract] |  |
Maximum maturity period of Available-for-sale marketable securities, classified as cash equivalents | 90 days |
Minimum maturity period of Available-for-sale marketable securities, classified as marketable securities | 90 days |
Maximum period of available for sale securities debt maturities | 2 years | 2 years

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- Definition Maximum maturity period of available-for-sale marketable securities, classified as cash equivalents. + References No definition available. + Details
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- Definition Maximum period of available for sale securities debt maturities. + References No definition available. + Details
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- Definition Minimum maturity period of Available-for-sale marketable securities, classified as marketable securities. + References No definition available. + Details
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- Details
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