v3.26.1
Document And Entity Information - shares
3 Months Ended
Mar. 31, 2026
May 04, 2026
Document Information [Line Items]    
Entity Central Index Key 0001095565  
Entity Registrant Name HEALTHSTREAM INC  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 000-27701  
Entity Incorporation, State or Country Code TN  
Entity Tax Identification Number 62-1443555  
Entity Address, Address Line One 500 11th Avenue North, Suite 850  
Entity Address, City or Town Nashville  
Entity Address, State or Province TN  
Entity Address, Postal Zip Code 37203  
City Area Code 615  
Local Phone Number 301-3100  
Title of 12(b) Security Common Stock (Par Value $0.00)  
Trading Symbol HSTM  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   29,215,188