v3.26.1
Cover Page - shares
 3 Months Ended
Mar. 31, 2026
May 08, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2026  
Document Transition Report false  
Entity File Number 001-38993  
Entity Registrant Name HEALTH CATALYST, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 45-3337483  
Entity Address, Address Line One 10897 South River Front Parkway #300  
Entity Address, City or Town South Jordan  
Entity Address, State or Province UT  
Entity Address, Postal Zip Code 84095  
City Area Code 801  
Local Phone Number 708-6800  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol HCAT  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Emerging Growth Company false  
Entity Small Business false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   73,894,020
Entity Central Index Key 0001636422  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false