Related Party Transactions	9 Months Ended
Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions In the ordinary course of business, the Company enters into transactions with related parties, including its affiliates. The transactions may range in the nature and value of services underlying the arrangements. Below are the related party transactions that are significant in nature: In August 2016, a Brand of the Company entered into an arrangement to provide technology development services to a client in which several of Brand's partners hold key leadership positions. Under the arrangement, the Brand is expected to receive from the client approximately $1,800, which is expected to be fully recognized as of October 31, 2022. During the three and nine months ended September 30, 2021, the Company recognized $200 and $300, respectively, in revenue related to this transaction. As of September 30, 2021, $200 was due from the client. In December 2018, a Brand entered into a continuous arrangement with a third-party in which the third-party was to perform marketing services. Several of the Company’s Brand partners hold key leadership positions in this entity. Under the arrangement, the Brand is expected to pay the affiliate based upon the success of their services with no minimum or maximum spend. During the three and nine months ended September 30, 2021, the Company incurred $400 and $1,200, respectively, in expenses related to this transaction. As of September 30, 2021, $700 was due to the vendor. In October 2020, a Brand entered into a continuous arrangement to provide marketing services to a client in which one of the Brands's partners holds a key leadership position. During the three and nine months ended September 30, 2021, the Company recognized $500 and $5,100, respectively, in revenue related to this transaction. As of September 30, 2021, no receivables remained outstanding related to this arrangement. In June 2021, a Brand entered into a continuous arrangement to provide marketing services to a client in which one of Brand's partners has an ownership interest. During the three and nine months ended September 30, 2021, the Company recognized $1,300 and $2,700, respectively, in revenue related to this transaction. As of September 30, 2021, $2,200 was due from the client. In December 2018, a Brand entered into a continuous arrangement to provide marketing services to a client in which a family member of one of the Brand's partners holds an executive leadership position. During the three and nine months ended September 30, 2021, the Company recognized $100 and $200, respectively, in revenue related to this transaction. As of September 30, 2021, $200 was due from the client. In March 2019, a Brand of the Company, entered into a loan agreement with a third-party who holds a minority interest in the Brand. The loan receivable of $3,800 and $3,400 due from the third-party is included within Other current assets in the Company's Unaudited Condensed Consolidated Balance Sheets as of September 30, 2021 and December 31, 2020, respectively. The Company recognized $200 and $300 of interest income within interest expense, net on its Unaudited Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2021, respectively. The Stagwell Group LLC, the registered investment advisor of Stagwell Media, engaged certain of its Brands to provide services for the Stagwell Group for interagency customers. The Company recorded $100 and $1,200 of related party revenue for the three and nine months ended September 30, 2020, respectively, and nil and $200 of cost of service paid to the Stagwell Group for the three and nine months ended September 30, 2020, respectively, in connection with such services. The Company did not recognize any related party revenue or cost of services paid to the Stagwell Group for the three and nine months ended September 30, 2021. Stagwell Media made noncash investments in the Company of $300 and nil, during the three months ended September 30, 2021 and 2020, respectively, and $12,400 and $83,200, during the nine months ended September 30, 2021 and 2020, respectively. Additionally, during the three and nine months ended September 30, 2021, the Company made cash investments of $1,600 On March 11, 2021, Stagwell Media received a Noncash distribution of $13,000 for the transfer of the Company’s ownership in the Finn Partners Preferred shares. Additionally, the Company made cash distributions to Stagwell Media of $165,700 and $4,700 for the three months ended September 30, 2021 and 2020, respectively, and $191,900 and $98,600 for the nine months ended September 30, 2021 and 2020, respectively.

In the ordinary course of business, the Company enters into transactions with related parties, including its affiliates. The transactions may range in the nature and value of services underlying the arrangements. Below are the related party transactions that are significant in nature:

In August 2016, a Brand of the Company entered into an arrangement to provide technology development services to a client in which several of Brand's partners hold key leadership positions. Under the arrangement, the Brand is expected to receive from the client approximately $1,800, which is expected to be fully recognized as of October 31, 2022. During the three and nine months ended September 30, 2021, the Company recognized $200 and $300, respectively, in revenue related to this transaction. As of September 30, 2021, $200 was due from the client.

In December 2018, a Brand entered into a continuous arrangement with a third-party in which the third-party was to perform marketing services. Several of the Company’s Brand partners hold key leadership positions in this entity. Under the

arrangement, the Brand is expected to pay the affiliate based upon the success of their services with no minimum or maximum spend. During the three and nine months ended September 30, 2021, the Company incurred $400 and $1,200, respectively, in expenses related to this transaction. As of September 30, 2021, $700 was due to the vendor.

In October 2020, a Brand entered into a continuous arrangement to provide marketing services to a client in which one of the Brands's partners holds a key leadership position. During the three and nine months ended September 30, 2021, the Company recognized $500 and $5,100, respectively, in revenue related to this transaction. As of September 30, 2021, no receivables remained outstanding related to this arrangement.

In June 2021, a Brand entered into a continuous arrangement to provide marketing services to a client in which one of Brand's partners has an ownership interest. During the three and nine months ended September 30, 2021, the Company recognized $1,300 and $2,700, respectively, in revenue related to this transaction. As of September 30, 2021, $2,200 was due from the client.

In December 2018, a Brand entered into a continuous arrangement to provide marketing services to a client in which a family member of one of the Brand's partners holds an executive leadership position. During the three and nine months ended September 30, 2021, the Company recognized $100 and $200, respectively, in revenue related to this transaction. As of September 30, 2021, $200 was due from the client.

In March 2019, a Brand of the Company, entered into a loan agreement with a third-party who holds a minority interest in the Brand. The loan receivable of $3,800 and $3,400 due from the third-party is included within Other current assets in the Company's Unaudited Condensed Consolidated Balance Sheets as of September 30, 2021 and December 31, 2020, respectively. The Company recognized $200 and $300 of interest income within interest expense, net on its Unaudited Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2021, respectively.

The Stagwell Group LLC, the registered investment advisor of Stagwell Media, engaged certain of its Brands to provide services for the Stagwell Group for interagency customers. The Company recorded $100 and $1,200 of related party revenue for the three and nine months ended September 30, 2020, respectively, and nil and $200 of cost of service paid to the Stagwell Group for the three and nine months ended September 30, 2020, respectively, in connection with such services. The Company did not recognize any related party revenue or cost of services paid to the Stagwell Group for the three and nine months ended September 30, 2021.

Stagwell Media made noncash investments in the Company of $300 and nil, during the three months ended September 30, 2021 and 2020, respectively, and $12,400 and $83,200, during the nine months ended September 30, 2021 and 2020, respectively. Additionally, during the three and nine months ended September 30, 2021, the Company made cash investments of $1,600

On March 11, 2021, Stagwell Media received a Noncash distribution of $13,000 for the transfer of the Company’s ownership in the Finn Partners Preferred shares.

Additionally, the Company made cash distributions to Stagwell Media of $165,700 and $4,700 for the three months ended September 30, 2021 and 2020, respectively, and $191,900 and $98,600 for the nine months ended September 30, 2021 and 2020, respectively.