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Goodwill and Intangible Assets - Narratives (Details) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 USD ($) $ / shares | Apr. 01, 2016 USD ($) | Dec. 31, 2015 USD ($) | Jul. 01, 2016 USD ($) $ / shares | Sep. 30, 2016 USD ($) $ / shares | Oct. 02, 2015 USD ($)
Goodwill [Line Items] |  |  |  |  |  |
Share Price | $ / shares | $ 5.93 |  |  | $ 3.01 | $ 5.93 |
Market Capitalization |  |  |  | $ 235,000 |  |
Goodwill | $ 239,880 |  | $ 197,781 |  | $ 239,880 |
Number of Reporting Units |  |  | 2 |  |  |
Preliminary Recorded Additional Goodwill |  |  |  |  | 41,670 |
Goodwill, Impairment Loss |  |  |  |  | 0 | $ 0
Finite-lived Intangible Assets Acquired |  |  |  |  | 41,800 |
Video [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill | 179,089 |  | $ 136,904 |  | 179,089 |
Preliminary Recorded Additional Goodwill |  |  |  |  | 41,670 |
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount |  |  | 87.00% |  |  |
Cable Edge [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill | 60,791 |  | $ 60,877 |  | 60,791 |
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount |  |  | 42.00% |  |  |
TVN [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Finite Lived Intangible Assets, Foreign Currency Translation Gain (Loss) |  |  |  |  | 700 |
Goodwill | 41,670 |  |  |  | 41,670 |
Goodwill, Purchase Accounting Adjustments | 4,600 |  |  |  |  |
Preliminary Recorded Additional Goodwill |  | $ 39,200 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | 41,100 |  |  |  | $ 41,100 |
Cash Earnout [Member] | TVN [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | 2,100 |  |  |  |  |
Developed Technology |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  | 3 years 4 months 12 days |
Developed Technology | TVN [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill | $ 21,700 |  |  |  | $ 21,700 |
Finite-Lived Intangible Asset, Useful Life |  |  |  | 4 years |  |

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