XML 12 R1.htm IDEA: XBRL DOCUMENT v3.25.2
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2025
Jul. 31, 2025
Document and Entity Information    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 001-37467  
Entity Registrant Name Astria Therapeutics, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 26-3687168  
Entity Address, Address Line One 22 Boston Wharf Road 10th Floor  
Entity Address, City or Town Boston  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 02210  
City Area Code 617  
Local Phone Number 349-1971  
Title of 12(b) Security Common Stock, $0.001 par value per share  
Trading Symbol ATXS  
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   56,434,894
Entity Central Index Key 0001454789  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Amendment Flag false