v3.25.2
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2025
Jul. 09, 2025
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Entity Registrant Name TECHTARGET, INC.  
Entity Central Index Key 0002018064  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Common Stock, Shares Outstanding   71,489,000
Entity Shell Company false  
Title of 12(b) Security Common Stock, $0.001 Par Value  
Trading Symbol TTGT  
Security Exchange Name NASDAQ  
Entity File Number 001-42428  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 99-2218610  
Entity Address, Address Line One 275 Grove Street  
Entity Address, City or Town Newton  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 02466  
City Area Code 617  
Local Phone Number 431-9200  
Document Quarterly Report true  
Document Transition Report false