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v3.20.2

Related Party Transactions (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jan. 01, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Related Party Transaction [Line Items] |  |  |  |  |
Sublease rental income |  | $ 2,892 | $ 2,590 | $ 5,697 | $ 4,189
Stagwell Subsidiary [Member] | Services Provided By Subisidiary [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Due to Related Parties |  | 723 |  | 723 |
Accounts Payable, Related Parties |  | 200 |  | 200 |
Stagwell Subsidiary [Member] | Development of Advertising Technology [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Due to Related Parties |  | 460 |  | 460 |
Accounts Payable, Related Parties |  | $ 170 |  | $ 170 |
Other Company [Member] | Board of Directors Chairman [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Sublease rental income | $ 185 |  |  |  |

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