v3.26.1
Document And Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Aug. 07, 2026
Document Information Line Items    
Entity Central Index Key 0001359931  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Transition Report false  
Entity File Number 001-36694  
Entity Registrant Name Protara Therapeutics, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 20-4580525  
Entity Address, Address Line One 345 Park Avenue South  
Entity Address, Address Line Two 3rd Floor  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10010  
City Area Code (646)  
Local Phone Number 844-0337  
Title of 12(b) Security Common Stock, $0.001 par value per share  
Trading Symbol TARA  
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   59,095,488
Amendment Flag false  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31