v3.19.3
Cover Page - shares
9 Months Ended
Sep. 30, 2019
Nov. 05, 2019
Cover page.    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2019  
Document Transition Report false  
Entity File Number 0-18592  
Entity Registrant Name MERIT MEDICAL SYSTEMS INC  
Entity Central Index Key 0000856982  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Incorporation, State or Country Code UT  
Entity Tax Identification Number 87-0447695  
Entity Address, Address Line One 1600 West Merit Parkway  
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 253-1600  
Title of 12(b) Security Common Stock, no par  
Trading Symbol MMSI  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   55,208,840