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Cover - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Mar. 08, 2024
Jun. 30, 2023
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Transition Report false    
Document Financial Statement Error Correction [Flag] false    
Entity Interactive Data Current Yes    
ICFR Auditor Attestation Flag false    
Amendment Flag false    
Document Period End Date Dec. 31, 2023    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Documents Incorporated by Reference [Text Block]

Portions of the registrant’s definitive Proxy Statement to be filed with the Securities and Exchange Commission by April 29, 2024 are incorporated by reference into Part III of this report.

    
Entity Information [Line Items]      
Entity Registrant Name Protara Therapeutics, Inc.    
Entity Central Index Key 0001359931    
Entity File Number 001-36694    
Entity Tax Identification Number 20-4580525    
Entity Incorporation, State or Country Code DE    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Shell Company false    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Public Float     $ 18.0
Entity Contact Personnel [Line Items]      
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    
Entity Phone Fax Numbers [Line Items]      
City Area Code (646)    
Local Phone Number 844-0337    
Entity Listings [Line Items]      
Title of 12(b) Security common stock, par value $0.001 per share    
Trading Symbol TARA    
Security Exchange Name NASDAQ    
Entity Common Stock, Shares Outstanding   11,433,837