XML 29 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2020
Apr. 23, 2020
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q1  
Trading Symbol HSTM  
Entity Registrant Name HEALTHSTREAM INC  
Entity Central Index Key 0001095565  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Common Stock, Shares Outstanding   31,997,499
Entity Shell Company false  
Entity File Number 000-27701  
Entity Tax Identification Number 62-1443555  
Entity Address, Address Line One 500 11th Avenue North  
Entity Address, Address Line Two Suite 1000  
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  
Entity Interactive Data Current Yes  
Entity Incorporation, State or Country Code TN  
Document Quarterly Report true  
Document Transition Report false  
Title of 12(b) Security Common Stock (Par Value $0.00)  
Security Exchange Name NASDAQ