| Cover | Nov. 03, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 03, 2022 |
| Entity File Number | 001-36694 |
| Entity Registrant Name | Protara Therapeutics, Inc. |
| Entity Central Index Key | 0001359931 |
| Entity Tax Identification Number | 20-4580525 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 345 Park Avenue South |
| Entity Address, Address Line Two | Third 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 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | TARA |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
