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v3.20.2

Related Party Transactions (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jan. 01, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Related Party Transaction [Line Items] |  |  |  |  |
Sublease rental income |  | $ 2,940 | $ 2,376 | $ 8,637 | $ 6,565
Stagwell Subsidiary [Member] | Services Provided By Subisidiary [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Due to Related Parties |  | 816 |  | 816 |
Accounts Payable, Related Parties |  | 225 |  | 225 |
Stagwell Subsidiary [Member] | Development of Advertising Technology [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Due to Related Parties |  | 475 |  | 475 |
Accounts Payable, Related Parties |  | 17 |  | 17 |
Stagwell Affiliate [Member] | Affiliated Entity [Member] | Arrangement To Perform Media, Planning, Buying And Reporting Services [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Accounts receivable, related parties, current |  | 5,276 |  | 5,276 |
Due from (to) from related parties |  | 957 |  | 957 |
Stagwell Affiliate [Member] | Affiliated Entity [Member] | Arrangement To Provide Audience And Brand Research, Concept Testing And Landscape For New Business [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Due from (to) from related parties |  | (82) |  | (82) |
Accounts payable, related parties, current |  | $ 145 |  | $ 145 |
Other Company [Member] | Board of Directors Chairman [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Sublease rental income | $ 140 |  |  |  |

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