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Segment Information - Summary Financial Infomation by reportable segments (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 28, 2019 USD ($) | Jun. 29, 2018 USD ($) | Jun. 28, 2019 USD ($) segment | Jun. 29, 2018 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |
Total Net Revenue | [1] | $ 84,865 | $ 99,160 | $ 164,971 | $ 189,287
Gross Profit |  | 43,928 | 51,603 | 85,777 | 98,786
Operating Income (Loss) |  | (7,764) | 642 | $ (16,172) | (8,685)
Number of Reportable Segments | segment |  |  |  | 2 |
Operating Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Net Revenue |  | 84,865 | 99,160 | $ 164,971 | 189,287
Gross Profit |  | 45,507 | 53,461 | 89,177 | 103,216
Operating Income (Loss) |  | (2,807) | 6,495 | (6,661) | 6,866
Operating Segments [Member] | Video [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Net Revenue |  | 71,625 | 79,208 | 138,801 | 150,956
Gross Profit |  | 41,444 | 43,558 | 80,046 | 84,784
Operating Income (Loss) |  | 4,459 | 6,239 | 6,427 | 8,234
Operating Segments [Member] | Cable Access [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total Net Revenue |  | 13,240 | 19,952 | 26,170 | 38,331
Gross Profit |  | 4,063 | 9,903 | 9,131 | 18,432
Operating Income (Loss) |  | $ (7,266) | $ 256 | $ (13,088) | $ (1,368)
[1] | Revenue is attributed to countries based on the location of the customer.

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