| Document and Entity Information | Oct. 29, 2020 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 29, 2020 |
| Entity Registrant Name | HOMETRUST BANCSHARES, INC. |
| Entity Incorporation, State or Country Code | MD |
| Entity File Number | 001-35593 |
| Entity Tax Identification Number | 45-5055422 |
| Entity Address, Address Line One | 10 Woodfin Street |
| Entity Address, City or Town | Asheville |
| Entity Address, State or Province | NC |
| Entity Address, Postal Zip Code | 28801 |
| City Area Code | (828) |
| Local Phone Number | 259-3939 |
| 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 $0.01 per share |
| Trading Symbol | HTBI |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001538263 |
| Amendment Flag | false |
