Document And Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Mar. 03, 2023	Jun. 30, 2022
Document Information Line Items
Entity Registrant Name	Protara Therapeutics, Inc.
Trading Symbol	TARA
Document Type	10-K
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		11,306,753
Entity Public Float			$ 19.6
Amendment Flag	false
Entity Central Index Key	0001359931
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Non-accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Dec. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	false
Document Annual Report	true
Document Transition Report	false
Entity File Number	001-36694
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, par value $0.001 per share
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	New York, New York