v3.19.3.a.u2

Goodwill and Intangible Assets - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Nov. 08, 2019
Finite Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | $ 74,116,000 | $ 1,382,000 |  |
Boston-based Dataxu, Inc, Demand-Side Platform (DSP) |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Goodwill | 72,700 |  |  | $ 72,733,000
Goodwill impairment loss | 0 | 0 | $ 0 |
Amortization of intangible assets | 2,800,000 | $ 600,000 | $ 200,000 |
Boston-based Dataxu, Inc, Demand-Side Platform (DSP) | Developed Technology, Customer Relationships, and Tradename |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets | 70,200,000 |  |  |
Boston-based Dataxu, Inc, Demand-Side Platform (DSP) | Patents |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets | 4,100,000 |  |  |
Boston-based Dataxu, Inc, Demand-Side Platform (DSP) | Developed Technology |  |  |  |
Finite Lived Intangible Assets [Line Items] |  |  |  |
Acquired intangible assets | $ 3,800,000 |  |  |

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