Organization	3 Months Ended
Mar. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization comScore, Inc., together with its consolidated subsidiaries (collectively, "Comscore" or the "Company"), headquartered in Reston, Virginia, is a global information and analytics company that measures audiences, consumer behavior and advertising across media platforms. Operating segments are defined as components of a business that can earn revenues and incur expenses for which discrete financial information is available that is evaluated on a regular basis by the chief operating decision maker ("CODM"). The Company’s CODM is its principal executive officer, who decides how to allocate resources and assess performance. The Company has one operating segment. A single management team reports to the CODM, who manages the entire business. The Company’s CODM reviews consolidated results of operations to make decisions, allocate resources and assess performance and does not evaluate the profit or loss from any separate geography or product line. On March 31, 2019, Bryan Wiener resigned as the Company's Chief Executive Officer and director and Sarah Hofstetter resigned as the Company's President, effective immediately. On the same day, the Company appointed Dale Fuller as Interim Chief Executive Officer, and Mr. Fuller assumed the role of CODM. Uses and Sources of Liquidity and Management’s Plans The Company’s primary need for liquidity is to fund working capital requirements of its businesses, capital expenditures and for general corporate purposes. In 2017, 2018, and 2019, the Company has implemented certain organizational restructuring plans to reduce staffing levels, exit certain geographic regions, and rationalize its leased properties, to enable the Company to decrease its global costs, more effectively align resources to business priorities, and maintain compliance with its financial covenants (described below). For additional information, refer to Footnote 10, Organizational Restructuring and Footnote 11, Subsequent Events. To increase the Company’s available working capital, during 2018, the Company entered into certain agreements with funds affiliated with or managed by Starboard Value LP (collectively, "Starboard"), pursuant to which the Company issued and sold to Starboard a total of $204.0 million in senior secured convertible notes in exchange for $100.0 million in cash and 4,000,000 shares of the Company's common stock, par value $0.001 per share (the "Common Stock"). The convertible notes contain certain affirmative and restrictive covenants with which the Company must comply, including covenants with respect to limitations on additional indebtedness and liens and maintenance of certain minimum cash balances, which are scheduled to increase from $20.0 million to $40.0 million on the earlier of August 9, 2019 or the date the Company files its Form 10-Q for the quarterly period ending June 30, 2019, subject to certain limitations. Interest on the convertible notes is payable, at the option of the Company, in cash or, subject to certain conditions, through the issuance by the Company of additional shares of Common Stock. For the interest payment due on April 1, 2019, the Company elected to pay in shares of Common Stock. For additional information, refer to Footnote 4, Long-term Debt. Under the agreements with Starboard, the Company has the right to conduct and fully implement a rights offering, which would be open to all stockholders of the Company, for up to $150.0 million in senior secured convertible notes. Starboard is obligated to backstop up to $50.0 million in aggregate principal amount of rights offering notes. If undertaken, the rights offering would provide at least $35.0 million in cash if not fully subscribed (assuming that any convertible notes purchased by Starboard pursuant to the backstop obligation would be issued on the same terms as the rights offering notes), and at least $105.0 million in cash if fully subscribed. The Company is not obligated to undertake the rights offering, and there is no assurance that the rights offering will occur. As of March 31, 2019, the Company was in compliance with its covenants under the convertible notes. Based on management's current plans, including actions within management's control, the Company does not anticipate any breach of these covenants that would result in an event of default under the convertible notes. The Company continues to be focused on maintaining flexibility in terms of sources, amounts, and the timing of any potential financing transaction in order to best position the Company for future success. The Company continues to explore all potential available alternatives and has not committed to any specific financing transaction, including the rights offering available under the agreements with Starboard. The Company believes that the financing actions discussed above, or other sources of financing, are probable of satisfying the Company’s estimated liquidity needs within one year after the date that the financial statements are issued. However, the Company cannot predict with certainty the outcome of its actions to generate liquidity, including the availability of additional debt financing, or whether such actions would generate the expected liquidity as currently planned.

Organization

comScore, Inc., together with its consolidated subsidiaries (collectively, "Comscore" or the "Company"), headquartered in Reston, Virginia, is a global information and analytics company that measures audiences, consumer behavior and advertising across media platforms.

Operating segments are defined as components of a business that can earn revenues and incur expenses for which discrete financial information is available that is evaluated on a regular basis by the chief operating decision maker ("CODM"). The Company’s CODM is its principal executive officer, who decides how to allocate resources and assess performance. The Company has one operating segment. A single management team reports to the CODM, who manages the entire business. The Company’s CODM reviews consolidated results of operations to make decisions, allocate resources and assess performance and does not evaluate the profit or loss from any separate geography or product line.

On March 31, 2019, Bryan Wiener resigned as the Company's Chief Executive Officer and director and Sarah Hofstetter resigned as the Company's President, effective immediately. On the same day, the Company appointed Dale Fuller as Interim Chief Executive Officer, and Mr. Fuller assumed the role of CODM.

Uses and Sources of Liquidity and Management’s Plans

The Company’s primary need for liquidity is to fund working capital requirements of its businesses, capital expenditures and for general corporate purposes. In 2017, 2018, and 2019, the Company has implemented certain organizational restructuring plans to reduce staffing levels, exit certain geographic regions, and rationalize its leased properties, to enable the Company to decrease its global costs, more effectively align resources to business priorities, and maintain compliance with its financial covenants (described below). For additional information, refer to Footnote 10, Organizational Restructuring and Footnote 11, Subsequent Events.

To increase the Company’s available working capital, during 2018, the Company entered into certain agreements with funds affiliated with or managed by Starboard Value LP (collectively, "Starboard"), pursuant to which the Company issued and sold to Starboard a total of $204.0 million in senior secured convertible notes in exchange for $100.0 million in cash and 4,000,000 shares of the Company's common stock, par value $0.001 per share (the "Common Stock"). The convertible notes contain certain affirmative and restrictive covenants with which the Company must comply, including covenants with respect to limitations on additional indebtedness and liens and maintenance of certain minimum cash balances, which are scheduled to increase from $20.0 million to $40.0 million on the earlier of August 9, 2019 or the date the Company files its Form 10-Q for the quarterly period ending June 30, 2019, subject to certain limitations. Interest on the convertible notes is payable, at the option of the Company, in cash or, subject to certain conditions, through the issuance by the Company of additional shares of Common Stock. For the interest payment due on April 1, 2019, the Company elected to pay in shares of Common Stock. For additional information, refer to Footnote 4, Long-term Debt.

Under the agreements with Starboard, the Company has the right to conduct and fully implement a rights offering, which would be open to all stockholders of the Company, for up to $150.0 million in senior secured convertible notes. Starboard is obligated to backstop up to $50.0 million in aggregate principal amount of rights offering notes. If undertaken, the rights offering would provide at least $35.0 million in cash if not fully subscribed (assuming that any convertible notes purchased by Starboard pursuant to the backstop obligation would be issued on the same terms as the rights offering notes), and at least $105.0 million in cash if fully subscribed. The Company is not obligated to undertake the rights offering, and there is no assurance that the rights offering will occur.

As of March 31, 2019, the Company was in compliance with its covenants under the convertible notes. Based on management's current plans, including actions within management's control, the Company does not anticipate any breach of these covenants that would result in an event of default under the convertible notes.

The Company continues to be focused on maintaining flexibility in terms of sources, amounts, and the timing of any potential financing transaction in order to best position the Company for future success. The Company continues to explore all potential available alternatives and has not committed to any specific financing transaction, including the rights offering available under the agreements with Starboard. The Company believes that the financing actions discussed above, or other sources of financing, are probable of satisfying the Company’s estimated liquidity needs within one year after the date that the financial statements are issued. However, the Company cannot predict with certainty the outcome of its actions to generate liquidity, including the availability of additional debt financing, or whether such actions would generate the expected liquidity as currently planned.