Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

v3.23.3
Document and Entity Information - shares
 9 Months Ended
Sep. 30, 2023
Oct. 31, 2023
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2023  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q3  
Trading Symbol ITRM  
Entity Registrant Name Iterum Therapeutics plc  
Entity Central Index Key 0001659323  
Entity Current Reporting Status 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 true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   13,050,007
Entity File Number 001-38503  
Entity Tax Identification Number 98-1283148  
Entity Address, Address Line One Fitzwilliam Court 1st Floor  
Entity Address, Address Line Two Leeson Close  
Entity Address, City or Town Dublin 2  
Entity Address, Country IE  
Entity Address, Postal Zip Code Not applicable  
City Area Code +353  
Local Phone Number 1 669-4820  
Entity Interactive Data Current Yes  
Title of 12(b) Security Ordinary Shares, $0.01 par value per share  
Security Exchange Name NASDAQ  
Entity Incorporation, State or Country Code L2  
Document Quarterly Report true  
Document Transition Report false