v3.25.2
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2025
Jul. 25, 2025
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Securities Act File Number 001-38804  
Entity Registrant Name Zynex, Inc.  
Entity Incorporation, State or Country Code NV  
Entity Tax Identification Number 90-0275169  
Entity Address, Address Line One 9655 Maroon Cir  
Entity Address, City or Town Englewood  
Entity Address, Country CO  
Entity Address, Postal Zip Code 80112  
City Area Code 800  
Local Phone Number 495-6670  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol ZYXI  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   30,297,442
Entity Central Index Key 0000846475  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false