v3.26.1
Document And Entity Information - shares
 3 Months Ended
Mar. 31, 2026
May 11, 2026
Document Information [Line Items]    
Entity Central Index Key 0001595248  
Entity Registrant Name Genprex, 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 001-38244  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 90-0772347  
Entity Address, Address Line One 3300 Bee Cave Road, #650-227  
Entity Address, City or Town Austin  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 78746  
City Area Code 512  
Local Phone Number 537-7997  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol GNPX  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   10,586,402