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Basis of Presentation and Significant Accounting Policies Summary of Presentation and Significant Accounting Policies (Details) (USD $) | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Sep. 26, 2014 | Sep. 27, 2013 segment | Sep. 26, 2014 segment | Sep. 27, 2013 | Dec. 31, 2014 Scenario, Forecast [Member] segment | Sep. 26, 2014 Cable Access Business [Member]
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |
Operating Income (Loss) | $ (3,538,000) | $ (2,555,000) | $ (19,409,000) | $ (22,026,000) |  | $ 0
Number of Reportable Segments |  | 1 | 1 |  | 2 |

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