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Goodwill - Additional Information (Detail) - USD ($) | 6 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016 | Jun. 08, 2016 | Dec. 08, 2015 | Oct. 02, 2014
Goodwill [Line Items] |  |  |  |  |
Goodwill | $ 166,256,000 | $ 166,256,000 |  |  |
Impairment of goodwill | 0 |  |  |  |
Interactive Data [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | $ 5,227,000 | $ 5,227,000 |  |  | $ 5,227,000
Effective date of business acquisition | Oct. 02, 2014 | Oct. 02, 2014 |  |  |
Fluent Acquisition [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | $ 155,645,000 | $ 155,645,000 |  | $ 155,645,000 |
Effective date of business acquisition | Dec. 08, 2015 | Dec. 08, 2015 |  |  |
Q Interactive, LLC [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Goodwill | $ 5,384,000 | $ 5,384,000 | $ 5,384,000 |  |
Effective date of business acquisition | Jun. 08, 2016 | Jun. 08, 2016 |  |  |

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