| Cover | Dec. 10, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 10, 2021 |
| Entity File Number | 1-10324 |
| Entity Registrant Name | THE INTERGROUP CORPORATION |
| Entity Central Index Key | 0000069422 |
| Entity Tax Identification Number | 13-3293645 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 1516 S. Bundy Dr. |
| Entity Address, Address Line Two | Suite 200 |
| Entity Address, City or Town | Los Angeles |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 90025 |
| City Area Code | (310) |
| Local Phone Number | 889-2500 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | INTG |
| Security Exchange Name | NASDAQ |
