v3.26.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2026
Jun. 01, 2026
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q1  
Trading Symbol MOBI  
Entity Registrant Name MOBIA MEDICAL, INC.  
Entity Central Index Key 0001489993  
Entity Current Reporting Status No  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Common Stock, Shares Outstanding   33,249,006
Entity Shell Company false  
Title of 12(b) Security Common Stock, $0.01 par value per share  
Security Exchange Name NASDAQ  
Entity File Number 001-43275  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 20-8573833  
Entity Address, Address Line One 2802 Flintrock Trace  
Entity Address, Address Line Two Suite 226  
Entity Address, City or Town Austin  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 78738  
City Area Code 855  
Local Phone Number 628-9375  
Document Quarterly Report true  
Document Transition Report false