Acquisitions and Strategic Investments Acquisitions and Strategic Investments	3 Months Ended
Mar. 31, 2021
Acquisitions and Strategic Investments [Abstract]
Acquisitions and Strategic Investments	Strategic Investments 2020 Change of Ownership in Rise InteractiveOn June 15, 2020, the Company purchased units of equity in Rise Interactive Media & Analytics, LLC (“Rise”) from a previous holder in the form of a $15.9 million note payable paid in full on October 1, 2020, and $1.0 million cash paid on June 15, 2020. In addition, on June 15, 2020, Rise purchased and retired units of equity from previous holders of Rise for $5.4 million in cash. These transactions result in the Company’s ownership interest to change from 57% to 99%. The Company began consolidating the results of Rise in the Company’s condensed consolidated financial statements when its equity ownership increased to 57% on March 14, 2018. The portion of Rise’s operating results not owned by the Company of 43% through June 15, 2020 and of 1% after June 15, 2020 is recorded as net earnings (loss) attributable to noncontrolling interests on the condensed consolidated statement of operations. The portion of net assets not owned by the Company is recorded as noncontrolling interests as of the respective dates shown on the condensed consolidated balance sheets.

Acquisitions and Strategic Investments Acquisitions and Strategic Investments

3 Months Ended

Mar. 31, 2021

Acquisitions and Strategic Investments [Abstract]

Strategic Investments 2020 Change of Ownership in Rise InteractiveOn June 15, 2020, the Company purchased units of equity in Rise Interactive Media & Analytics, LLC (“Rise”) from a previous holder in the form of a $15.9 million note payable paid in full on October 1, 2020, and $1.0 million cash paid on June 15, 2020. In addition, on June 15, 2020, Rise purchased and retired units of equity from previous holders of Rise for $5.4 million in cash. These transactions result in the Company’s ownership interest to change from 57% to 99%. The Company began consolidating the results of Rise in the Company’s condensed consolidated financial statements when its equity ownership increased to 57% on March 14, 2018. The portion of Rise’s operating results not owned by the Company of 43% through June 15, 2020 and of 1% after June 15, 2020 is recorded as net earnings (loss) attributable to noncontrolling interests on the condensed consolidated statement of operations. The portion of net assets not owned by the Company is recorded as noncontrolling interests as of the respective dates shown on the condensed consolidated balance sheets.