Organization and Description of Business	12 Months Ended
Organization and Description of Business	Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Description of Business	Organization and Description of Business Description of Business Semrush Holdings, Inc. (“Semrush Holdings”) and its subsidiaries (together the “Company”, or “Semrush”) provide an online visibility management software-as-a-service (“SaaS”) platform. The Company’s platform enables its subscribers to improve their online visibility and drive traffic, including on their websites and social media pages, and distribute highly relevant content to their customers on a targeted basis across various channels to drive high-quality traffic and measure the effectiveness of their digital marketing campaigns. The Company is headquartered in Boston, Massachusetts, and has wholly owned subsidiaries in Armenia, Canada, Cyprus, the Czech Republic, Germany, the Netherlands, Poland, Spain, Serbia, and the United States. The Company is subject to a number of risks and uncertainties common to companies in similar industries and stages of development that could affect future operations and financial performance. These risks include, but are not limited to, rapid technological change, competitive pressure from substitute products or larger companies, protection of proprietary technology, management of international activities, the need to obtain additional financing to support growth, and dependence on third parties and key individuals. Effects of the Russian Military Action in Ukraine Economic, civil, military, and political uncertainty exists and may increase in many of the regions where the Company operates and derives its revenue. Several countries in which the Company operates are experiencing and may continue to experience military action and civil and political unrest as a result of such action. The Company has significant development operations in the emerging market economies of Eastern Europe and more than half of the Company’s full-time employees were historically located in Russia. In late February 2022, Russian military forces launched significant military action against Ukraine, and sustained conflict and disruption in the region has been ongoing and is likely to continue. The impact to Ukraine and Russia, as well as actions taken by other countries, including new and stricter sanctions by Canada, the United Kingdom, the European Union, the U.S. and other countries and organizations against officials, individuals, regions, and industries in Russia, Ukraine and Belarus, and each country’s potential response to such sanctions, tensions, and military actions could have a material adverse effect on the Company’s operations. Any such material adverse effect from the conflict, enhanced sanctions activity, and subsequent responses may disrupt the Company’s relationships with its vendors, disrupt its delivery of services, cause the Company to shift all or portions of its work occurring in the region to other countries, and may restrict the Company’s ability to engage in certain projects in the region. During the second quarter of 2022, the Company began a large-scale relocation effort of its Russia-based workforce to other jurisdictions. The Company’s exit from Russia was substantially completed by December 31, 2022. See Note 7 for additional information on the costs associated with such relocation efforts. Sale of the Company’s Russian Subsidiaries On August 3, 2022, the Company completed the sale of its two Russian subsidiaries, Semrush RU Ltd. and Semrush SM Ltd., in connection with the winding down of its operations in Russia. The Company received an insignificant amount of consideration in connection with the sale of these two subsidiaries. See Note 7 for further detail on the sale of the Company’s Russian subsidiaries. Effects of COVID-19 The Company considered the potential effects of the COVID-19 pandemic on the Company. In March 2020, the World Health Organization declared the outbreak of COVID-19 a pandemic, and numerous new strains of COVID-19 have subsequently spread throughout the world. COVID-19 has continued to impact market and economic conditions globally. In an attempt to limit the spread of the virus, various governmental restrictions have been implemented, including restrictions with respect to business activities and travel restrictions, and “shelter–at–home” orders, that have had and may continue to have an adverse impact on the Company’s business and operations. In light of the evolving nature of COVID-19 and the uncertainty it has produced around the world, it is not possible to predict the COVID-19 pandemic’s cumulative and ultimate impact on the Company’s future business operations, results of operations, financial position, liquidity, and cash flows. The extent of the impact of the pandemic on the Company’s business and financial results will depend largely on future developments, including the duration of the spread of the outbreak both globally and within the U.S., the impact on capital, foreign currencies exchange and financial markets, and governmental or regulatory orders that impact the Company’s business, all of which are highly uncertain and cannot be predicted. As of December 31, 2022, the Company has experienced long lead times for hardware affected by a semiconductor shortage attributed to the COVID-19 pandemic which may affect its ability to timely furnish the infrastructure within its data centers. The Company will continue to actively monitor the current international and domestic impacts of and responses to COVID-19 and its related risks.