Organization and Operations	12 Months Ended
Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Operations	1. Organization and Operations TechTarget, Inc. and its subsidiaries (the “Company”) is a leading provider of specialized online content for buyers of enterprise information technology (“IT”) products and services, and a leading provider of purchase-intent marketing and sales services for enterprise technology vendors. The Company’s service offerings enable technology vendors to better identify, reach and influence corporate IT decision makers actively researching specific IT purchases. The Company improves vendors’ ability to impact these audiences for business growth using advanced targeting, analytics and data services complemented with customized marketing programs that integrate demand generation and brand advertising techniques. The Company operates a network of over 140 websites, each of which focuses on a specific IT sector such as storage, security or networking. IT and business professionals have become increasingly specialized, and they have come to rely on the Company’s sector-specific websites for purchasing decision support. The Company’s content platform enables IT and business professionals to navigate the complex and rapidly changing IT landscape where purchasing decisions can have significant financial and operational consequences. At critical stages of the purchase decision process, these content offerings through different channels meet IT and business professionals’ needs for expert, peer and IT vendor information and provide a platform on which IT vendors can launch targeted marketing campaigns which generate measurable return on investment. Based upon the logical clustering of members’ respective job responsibilities and the marketing focus of the products being promoted by the Company’s customers, the Company categorizes its content offerings to address the key market opportunities and audience extensions across a portfolio of distinct market categories: Security; Networking; Storage; Data Center and Virtualization Technologies; CIO/IT Strategy; Business Applications and Analytics; Application Architecture and Development; and ANCL Channel.

Organization and Operations

12 Months Ended

Dec. 31, 2018

Organization Consolidation And Presentation Of Financial Statements [Abstract]

1. Organization and Operations

TechTarget, Inc. and its subsidiaries (the “Company”) is a leading provider of specialized online content for buyers of enterprise information technology (“IT”) products and services, and a leading provider of purchase-intent marketing and sales services for enterprise technology vendors. The Company’s service offerings enable technology vendors to better identify, reach and influence corporate IT decision makers actively researching specific IT purchases. The Company improves vendors’ ability to impact these audiences for business growth using advanced targeting, analytics and data services complemented with customized marketing programs that integrate demand generation and brand advertising techniques. The Company operates a network of over 140 websites, each of which focuses on a specific IT sector such as storage, security or networking. IT and business professionals have become increasingly specialized, and they have come to rely on the Company’s sector-specific websites for purchasing decision support. The Company’s content platform enables IT and business professionals to navigate the complex and rapidly changing IT landscape where purchasing decisions can have significant financial and operational consequences. At critical stages of the purchase decision process, these content offerings through different channels meet IT and business professionals’ needs for expert, peer and IT vendor information and provide a platform on which IT vendors can launch targeted marketing campaigns which generate measurable return on investment. Based upon the logical clustering of members’ respective job responsibilities and the marketing focus of the products being promoted by the Company’s customers, the Company categorizes its content offerings to address the key market opportunities and audience extensions across a portfolio of distinct market categories: Security; Networking; Storage; Data Center and Virtualization Technologies; CIO/IT Strategy; Business Applications and Analytics; Application Architecture and Development; and ANCL Channel.